Cam for low compression 318. Again, just my opinion of course.

Cam for low compression 318 I'd replace cam with something like a 360 stock replacement cam, it will run a million times better. Open the carburetor and block open. 14. 6:1 or less compression I would go with either the 268H, or XE262 Comp cam, Comp 901-16 springs, and the Performer 318/360. 318 WHIPLASH BASIC CAM KIT. I do want an engine that performs well,my first upgrade Cam and compression ideas? A 360 based 318 stroker isn’t too expensive to do if you get low compression TRW forged 318 pistons off of eBay. If the above test shows a lower compression number, then "retard" the cam, 3°. on a low compression ratio engine (7. I'd first blame that and possibly retarded cam timing before I worried about low compression causing poor I'd first blame that and possibly retarded cam timing before I worried about low compression causing poor performance. probably 6k safely without breaking "the big parts". An xe250h to me is similar to a 340 cam which . 65 dart w/ 391's 2nd gear is all hands on deck. With that cam on a stock 318 I'm pretty sure you won't be happy. Look at the stock Mopar 400 for CID comparison, 190 HP! Then you can look at the 440 with a 3. Keeping the 318 heads is the right move, but you will need to upgrade the springs to match, and I would avoid any of This kit includes all of the basic items you need to upgrade your 318 low compression engine with our Whiplash cam. And with the resources available here I'm now going to do a little In fact, the Thumpr produced more torque down low than the smallest cam in the test, in addition to posting the highest peak output of 466 hp at 6,300 rpm. OR better yet slap a set of 340 or 360 heads on if you have them. SHARE POST #20. There are millions of used 360's out there with better heads and more cubes for very lttle money. Whiplash Flat tappet hydraulic small block "LA" camshaft. 029" below standard deck height at TDC, much better than comment: good low and mid-range torque and pulling power roller cam for engines originally equipped with roller cam torque cam mc22128 hyd 2 210 214 273 277 . I admit I do have 3. I ran my low-compression 318 for a short time with 4. All I did was install a little larger cam, headers, 4bbl. I think he messaged the heads pretty good, I know he installed bigger valves. 5:1 to 8. There are some smaller cams in the XE line that would be a lot better for a stock 318. Also I just put a comp 270h in my low compression 440. The LD4B is designed for the smaller 273/318 intake ports. Has piston upgrade and running magnum cylinder heads with Hughes springs. Most mufflers neck down to 1-7/8 or so. 318 is a low compression, small port/valve head. 18 mpg Hwy. 050 duration at 220° . edelbrock performer 2176 because I had it, 1406 edelbrock, compression works out to 9. Only 5 inches of vacuum at idle. Same gear ratio and stock tires I. Engine block is 68 318 with a 73 front cover and well Ron, from Omaha, your 68 318 better be of the 9. Definitely check with them first. Not last Monday. Find DODGE 5. It also had headers and a 4bbl. In 2004 I had a machine shop GIVE me a brand new 272/. I think the trick is good heads, and the cam, for low compression. Looking for cam suggestions for a 318 with 302 heads, 2bbl 318 intake, stromberg WW, 273 manifolds (eventual dual ex). 76 gears is around 30/32 mph That way you get the flow gain along with a bit or a CR bump all win. It is a catch 22. Joined Jun 7, If you just want some low end stoplight thump, I’d look into the 256. To learn more about the Whiplash cam CLICK HERE. Louis in 2001. Introduced in 1967 as a two-barrel engine with a bore and stroke of 3. they had 1. Close to 340ish cam stock 904 and converter. Hey guys. I would always be looking for cheap cams at swap meets and the low lift stuff was always cheap not to mention great for the engines I was building. 050˝ cam lift) are usually considered best for stock unmodified engines and those with computerized engine Engine bought last summer, just fired up yesterday. There are a scant few who would run this in the street while actually taking full advantage of the cams power engine and chassis wise. She does real good with 4. 6 stock CR; DCR was in the LOW 5 range! With the lower stock 318 compression ratios, the low RPM is torque and performance is already soft, so I personally would prefer to go to the high ramp rate cams and work with the challenges there. Peak output aside, the Thumpr trounced the 232/240-at-. 7-1 rocker ratio I have an 84 D100-2wd with a low-compression 318 long-block from a 73 Dart; with nothing but a small-port 4bbl, headers, and a 2800/904. This is not an issue with the low compression 318z After that, I have always echoed what you wrote. HP ignition, dual exhaust or headers, 4bbl low rise type manifold. You will find that it will cost the same to rebuild a If you're gonna put those on a 318, mill them, otherwise you will lose compression on an already low compression engine. The overlap moves the same amount, but since the 318 cam only has 20 degrees to start with, and she is running logs, this is almost meaningless. Forums. A . Or just get the GM 383 long block. I can almost guarantee you will forget all about camming it. 23 gears can use a cam up to something like a 218 duration @ . 030 with kb167 pistons, #302 heads, comp cams xe268h, weiand 8007 intake, and 600 cfm carb Home. 7x gears which adds a With a low budget approach, the combo is now: 318 . Running a thermoquad, performer, manifolds and 2. 25:1. Same EXACT cam as a Higher cranking compression will provide more power, when tuned correctly. Test the compression a couple of times 7. My stock '69 318 Barracuda came with 9:1 compression from the factory. 4-1 comp, webcam towing roller cam, mid length headers, modified flowmaster 50 series, 3. Sparks and Cables are new but just to be sure I bought a new park plug. if i bumped up the cam to a stock 340 cam and ran some 360 heads that flow more i could go with the performer and may do so in the future. but 3. I like it. the car has 2. WHIPLASH SERIES FLAT TAPPET HYDRAULIC CAMSHAFT. I would be very interested in knowing what it makes. 5:1 Compression and an 850 Thermoquad. 658". go less wild with the cam and try and stay around . I used to run a crane HMV-260 cam that was almost identicle to this in my original (well for me anyway) 318 in my van. 100 down So to recap; in order of installation; convertor, then gears free-flowing exhaust and recurved timing 4bbl and intake, headers, and a recurve cam-kit and heads and possibly another recurve On a low-compression 318; > a 4bbl and a low-stall, IMO, is more or less a waste of time until around 3000 rpm; which with 2. . I had to have my carb and timing just right to keep my car from dying at every stoplight. I recently bought this-Voodoo Hydraulic Roller Cam - Chrysler 273-360 (W/ Long Snout) 258/264 - Lunati Power from a member on FxBO. i think those This is for a low compression 318-2bbl/727-2. With the low compression, the engine won't tolerate a lot of whoopee on the cam and be decent to drive on the street. Compression helps for sure, but flow is most important, and remember, your motor is a air pump. The ‘74-318 has a low compression problem. That should definitely work with stock compression ratio (318 I take it?) Nate and good with a 2bbl carb for nice low to mid range and a smooth idle. We also offer a premium kit that includes all of the above as well as the It is real mild, but it has worked for me. Here's my idea, 318 with stock bore and pistons, hone it, zero deck, new bearings and rings. Doosterfy Well-Known I picked up a 88 TBI 318 today for the #302 heads, and tearing it apart it is a factory roller 318. 25:1 or less compression and iron heads. I would recommend 340 red valvesprings and a compression increase via KB or SRP/ICON/ProTru flat tops and using 360 heads for maximum benefit with a 4bbl and that 340 factory cam. Strange Magic I have a similar 440 low compression motor, the Whiplash 440 cam, but used a tunnel ram, twin 660 center squirter carbs, and fenderwell headers. Good luck! P. If your compression is higher than this you may need to use a higher octane race fuel. 475 is about all the further you should go. I broke in the cam with the stock springs then changed them, those stock ones are puny. 029" below standard deck height at TDC, much better than The specs on the cam indicate improving low end torque and overall performance, win win for a low compression 318. Joined: Jan 29 The Whiplash cam is designed for a stock lower compression engine such as the 318. Much milder than the one you are looking at, and it still was soft on low end torque. 3 1 4. 5-10:1 comp and the heads have been opened up, but using stock valves and also have the adjustable rockers. Your vacuum should be in the 9"-11" range using this cam. 92 rear end. Then raise piston on compression stroke, this will hold the valves up. I entered specs for 14 or so cams. Magnum heads with a good truck cam, needs a lot of low end torque for the poor gearing. Compression is about 9. The B48E, B48M, and P218 all have the longer I ran a 318 in a D50 for a while that had a 340 Top End & 340 Cam with 10. Click to expand Still in MN yet, sold the truck with the FX-Sound dual exhaust and resonators. Jus saying. 444, old edelbrock 318 bored . great throttle The big problem is when someone goes with big head chambers on a starts-with-low-compression 318 and puts in a big cam, and 'blaaaaaaah' off of the line. What I know: '72 block steel crank new pistons and rods, shiny walls (as seen through boroscope) '72 360 heads, valves opened to 2. 91s) before I would do anything else. No regrets. 1) in at split overlap, the cylinder pressure drops like a stone compared to the stock cam, and 2) if I advanced it to get the pressure back, it sucked gas 3) if I retarded it to get some power extraction, well then the pressure was abysmal. With a little The next MP cam is 324/. Junk yard low compression 318, J Heads to drop compression (rolls eyes here) Aluimiunm Intake, 750 Holley duel feed, chrome valve covers, headers and loud muffs pipes dumped before rear end. What you get: SMC1326AL Whiplash Camshaft; Those B43G engines on the early 318's use the round Nikki carb instead of the square Marvel carb that is more common on the Suburbans. Strange Magic Dumping big carbs and cams in a 318 is in my opinion a waste without heads that can flow. Valvoline VR1 racing oil has high Lots of low end grunt and highway passing gear pull, idles like a kitten. 76 / 2. The cam I’m putting into my ’68 318 is the comp cams 256 XE (extreme energy). 5:1 compression with iron heads in small blocks, 7. if that holley 550 has 1 9/16" bores then you're golden the street master is satisfactory for a low compression 318. Unknown specs. 76:1 gears and a stock 1976 low compression 318 engine late 60's a body . Swapping to a 360 head hurts it. Rusty O'Toole, Mar 5, 2019. The Duster did end up managing some high 14 1/4 runs on a ‘79, low 7. Based on comments here, research and Lunati recommendations, I will be ordering the 701 this week. If you cam a low compression engine I got an SP2P-318 for ya$50 bucks and the ride. With the magnums higher rocker ratio, how do I get a cam that wont add too much lift? I couldn't get an actual magnum cam cause the 318 has hyd flats. 468 PN CL20-246-4 The car is just going to be a Street car with some more HP then my 318. 5-1 & 3. Cams with durations in the 195 to 210 degree range (measured at . 02 intake Mopar purple shaft cam. 84 intake and 1. I did a bit of research as I’ve never used one of these type cams. Now I'll have around 9. Also remember there are many variables as what the plan is for the cars usage. The dual exhaust and 4-bbl alone will wake up a 318 with a stock cam. 273 forged crank, 6. Save Share i was told the performer doesnt pull enough vacuum. 3:1 compression. It will also get better mileage. low compression, and a camshaft that The next MP cam is 324/. They only require less than a . for 5,800 rpms i did this to my 318" without going expensive, this is what i did. 450-. 480 lift is pretty big for an otherwise stock, low compression 318. I run 4. Is it worth it to swap out the stock 1982 two barrel cam? If so, what cam would pepole recommend for low RPM torque in a 318 running the stock small valves and two barrel carb? I am trying to keep it running smooth and just improve fuel economy and torque. where I’m at with my 318 today is where a lot of you were at 25 years ago. YOu have a low compression, small valve engine with specific goals. First run OOTB & on the verge of over heating was a 15. 75 stroke, 250 HP. Marginal for street, serious strip use. Members. 94 geared Cruiser. I have long wanted to do a 318 that way, 340 cam with iron exhaust manifolds or shorty headers and a 340 intake with a spreadbore carb (TQ or Holley). 123" rods Wrong cam Low compression Well now I've done my home work. 050 and . Everybody had a grind that was similar but just about anything that was around the stock 1968 340 cam specs was I'm close to the same boat with a back burner project. 6:1 or less compression The engine currently runs a 340 spec camshaft, so I want to know if I can make any significant gains with just a cam change. Headers will help too but the car will still not how low can you go? compression wise that is 318's left the factory as low compression workhorse's with small chamber heads they are only 8:1 - 8. An Edelbrock performer cam (204/214 with 112 lsa) would be a nice upgrade on a otherwise stock setup. eschew the single plane for a dual, the smaller cubes need all the help they can get in the down low and torque department. Is it steady or does it bounce around? I personally don't like using the 340/360 heads on a 318 unless the pistons are at 0 or . If the compression reading is higher, you did good. 478 107 117 1500-4000 smooth 2148 b, n comment: good torque and mileage chevrolet - gm ls v8 gen iii & iv, 3 bolt, 1997 - present, 1. 1:1 and the cam is a Comp solid 270/270 with . This is an excellent cam for the 318. 2nd would to be to port out the 318 heads you got no loss in CR. so it will work. Cam that works with the stock stall converter and gear ratio. It pulls very hard at 3000 right to 6500 (I stopped there). Mild cam upgrade 206 int. Any constructive input is appreciated and welcome. Set the cam to the highest compression number as noted with the tests above. IMO, if you wanna wake a 318 up, just throw a 2800TC at it, a small-port 4bbl, dual exhaust and the biggest darn gears you dare drive. Engine is 73 318 . And it does, if you can get traction; No winding up to get in the powerband; it goes off idle. 050 without any noticable issue in missing low end torque. This cam will run on pump gas in a 440 with 8. I had a repro 275hp 340 cam in my 318, worked good w/ both 2 and 4bbl carbs, plenty of low end. Mind you the minimum cranking compression for a 318 as specified in the factory service manual is 100 psi. 060 mill off the head after widening the chamfer above the top ring to put the top back below deck. 444, SB Mopar. I’d recommend a cam, but you tell me the gear ratio first. 6. 23 geared 25" tires factory high stall converter in 904 with a TF-2 shift kit. It pulls very Would a 106-108 LSA build up higher cranking pressure for my low compression combo? 122>118 for the stock 318 cam; straight up, to +4 . Ran great! Responded well to headers and exhaust too. I did run that 252cam in a 318 , but it needed Will a 318 bored . That cam has 236I, 242E duration @050 and 502, 511 lift. as of this time I’m going to leave the pistons down in the hole and live with the compression that the engine has now. 50 (link to cam: I am just looking to get the most low end power out of the 318 while maximizing gas milage and reliability as this will be my daily driver. The SP is an awesome LOW RPM intake, like a jeep or a truck. I have 318's are great engines, and highly underrated by a lot of folks. Bottom line, according to him, was the bigger cam could mean less HP, less torque and less drivability. Would a 106-108 LSA build up higher cranking pressure for my low compression combo? 122>118 for the stock 318 cam; straight up, to +4 . Remove all spark plugs. The 67-70 318 stock pistons come closest to the deck. I have run the 360-2bbl cam in an otherwise stock short-block low-compression 318, with just headers and a 4bbl; with a 2800stall, and I liked it, even with just 3. 468/. $635. 13's. You list the lift of the Comp Cam, but not the duration. 97 The XE260H. A cookie cutter cam isn't going to be your best option. Disconnect the HUG SMC1326AL. idles smooth with a little hint of lope and absolutely rips when you jam on the gas. i pulled my cop 318 heads off a cruiser. Jan 27, 2022 #3 It’s ready for Silvolite lists some cast low compression 318 truck pistons, PN 1278, that have a compression height of 1. Here is a Stock 1969 318 with a 4 barrel added to the stock 318 intake and I've used this engine combo w/the crane cam in a low compression(8:1)/ stock rocker/ stock headed 318 in a 71 Dart before and it ran 13. Your engine must have heads that go with that compression. since yesterday my demon runs on 7 to 7,5 cylinder. 454 CD Energizer (ground before Crane bought Cam Dynamics) because they thought it was a If youre going to use the 318 crank then you want to use the high compression 318 pistons. 88 1. 620. Considering a 180lbs. I took out a 284 484 mopar cam which was a turd in that 8 to 1. 5 Scr persuasion, or don't be surprised if it turns into a pos. VERY low miles. If you don't at least try, then the bottom will get soft, and you will need a higher stall to get past the softness. I would use a smaller cam with more duration on the exhaust side as compared to the intake. 4:1 compression now. With the 3. 100 with 1. Now There's not a ton of off-the-shelf roller cams available for them, but there's some decent ones - if you have decided to rebuild the 318, then you'll need to see what you can do for compression first before picking a cam. A stock low comp '79- 318 automatic. The 2800 works really well with 4. With the mild build you are talking about, Do the math to determine the compression ratio, then either pick a cam that works with that CR, or mill the heads and/or deck to get the CR up, and then pick a cam. 31, the 318 was an enlarged version of Chrysler's LA small-block that debuted in 1964 with 273 ci. A stock 340 cam with matching valve springs would be the next be careful of what heads you use, 360 heads might give you bigger valves and ports but low compression. So we have a cam and compression ratio combination that is going to be poor at low RPM's (off-idle torque like a stock 318) and a head that is going to kill the high RPM's. The low compression 318-4 cop car motor used a Quadrajet. 350 vortec 880 casting and 906 or 062 heads. Here are the particulars. Lift ends up a . Having said that What year is your 318? Low compression on one cylinder could be a few things. Like the 262 or 256 cam. 55s. 80 in the hole and because 318 cams had a paltry . Worked great with my old engine, works like crap with my new engine. The exhaust pipe is 2 inches. 500+ lift with low duration get's you aggressive ramps and noisy valvetrain. This cam will run on pump gas in a 318 with 8. People will swap heads, cams, rear gears, verts but yet still skiddish of a piston and balance job. 30 over, with 9. 91s I've run that 252* cam in a stock low-compression 318 and discovered a few things. The next MP cams are solid rollers. $292. But in the end it makes a decent, "cheap" little 349 stroker A 340 @ 8. cam, and heads. Lunati has suggested their 701 grind and I know there is the Hughes Whiplash cam that is supposed Once again I know this has already been asked but it seems it's with all the super low compression 318's from the mid 70's. I have posted this before, if you must use the low comp pistons another good cheat is fast bleed lifters to give you 4-6 less degrees duration till about 3500 rpm. 5:1cr) this cam makes a real good street strip supercharger cam in a 340 360. If you look at post #17 stock 318 with 4bbl headers and comp xe262h cam, it ain't hard to imagine how a xe250h and xe256h or similar cams would respond, the down low rpms 3500 and under probably pretty similar, above probably a drop of 10-15 ish hp for each step down and a loss of peak hp rpm by around 100 or so. 9. Thanks. Looking for the right cam for good low end torque. 5 to 8. 4 compression w/ 318 pistons. A- Build up the 318, (cam,timing chain, headers,etc) B-Just save the money and get a big block and transmission It sounds to me like you may have a very tired 318 (worn out cam, low compression, etc), and/or some trans problems that are sucking your power up. 224 @. The cam selection will changed with that, and the emphasis on compression ratio may change a bit, and CR should track cam selection to a fair degree. It is a good one. Small blocks with aluminum heads can be as high as 9. The B43M and B43E as well as the P216 all have the shorter stroke as well as milder cam, low compression heads, and small venturi carb (16 HP). hello all,Jim here. Our Whiplash cam is designed for basically stock, low compression engines. 8. Top. A good match to a Weiand 142 blower on a low cr 340. Became a member of this site. Go with a 360. 2 RustyRatRod I was born on a Monday. 3rd you would be 340/360 heads you will lose some of the power gained by flow with loss of CR and would have to be very careful with cam choice since the engine will be very low in compression. Meaning Street/Drag,Autocross or a daily driver. 25:1 and big blocks 10. 21 gears and a near stock sized tire. 5:1 if you put large chamber 340 or 360 heads on one you will lower the already minimal compression possibly down into the 7's, great for cheap gas, bad for everything else also the larger ports of the 340, 360 That should definitely work with stock compression ratio (318 I take it?) Nate and good with a 2bbl carb for nice low to mid range and a smooth idle. Engine going in a 65 dart wagon, going for stock 273 appearance hence the 2bbl. 111>107 for my Hughes 2330, straight-up to +4 106>103 for my current Hughes 3037, straight up to This is going to drop the compression pretty low, which is great for cheap gas, but bad for the performance side, thus most 318s are rated at the 185hp, which is a shame. 070 to . Joined Nov 13, 2019 Messages 1,493 Reaction score 2,476 Location NW USA. 23 gears and numericaly higher? XE268H I has a similar spec'd Crane cam in a 318 Duster capable of high 14's with 3. Lunati has suggested their 701 grind and I know there is the Hughes Whiplash cam that is supposed to work for low comp motors or am I wasting my time without bumping up the compression. 485 and 290 Show's why a midrange cams 210-220 are good choice for the street, and why a 350 Chev is a turd of an engine :) Engine Camshaft - Test, Comparison Review - Hot Rod Magazine If you keep the stock low compression you need to go smaller on the cam. 318 WHIPLASH CAM 109º LSA+5. I'm not in that boat. OOps I see I am late to the party,lol, enjoy yur new cam. Hughes "real" Chrysler cam WARNING: Our Whiplash cam is designed for basically stock, low compression engines. 55 gears, A904 trans with mild shift kit and lockup converter, factory esa, and pieced together lift kit, Maybe with a big single an pushin about 10psi might go well with the low compression the 360 heads will The 318 block and heads were gone over by a machine shop, bored for new pistons, getting 8. '93 D150 RC SWB, 5. I would steer clear of the Ede cam. Again, just my opinion of course. Oh wait, I already did do it. 2. Strange He said I could use any cam but the overlap on the 702 and 703 cams would bleed off too much compression and I don't have that much to spare. 429/. Repeat #7 above. I now several guys using the Whiplash, one with a 360 and another with a 400, both said the cam made the low compression engines into a different beast. 55 exhaust valves, flowing 210cfm at . Intake is a Dual plane air gap type, 600 CFM carb. i literally just finished up a 318 build: 73 block, 68 heads w/ 340 sprAngs, thin fel pro head gaskets, 340 cam advanced, LD4B, carterbrock 625, OE electronic ignition, thru manifolds. 30 gears, and really needs 4. My point is, the 318 is more of a high rpm A friend of mine was asking about using a Hughes “Whiplash” cam in an otherwise nearly stock small block mopar. Just don't get to carried away with duration specs, which is all to easy to do. All done at 5200rpm. stock dished pistons and the 350 ram jet cam and a 600 carb. You will see a difference with just a good intake, carb, 340 cam and good exhaust. you end with 7. New MP distributor Edelbrock Performer 318/360 intake Carter AVS 750 carb Low compression can be an issue. If your rebuilding the engine, they suggest pistons above, the 17 pages of 318 cam discussion. 500 lift (52cc combustion chambers) measured 9. 030 over Lunati 10200703 675 heads shaved . 475-ish and 260~275-ish duration. She's running 28s with 3. That 2800 was a game-changer. 1 rear gear I have two carb Very simple build. 30s, pretty good with 3. They have slugs that can be used at zero The only thing making a 318 a low rpm short block is the low compression pistons. I was under the impression that the xe268 was popular with 318's. The problem is getting the 318 up to 8. Dog off the line and idling problems. 58" stroke, that puts the piston top at . Or even a 318. In fairness, the de-smogging of each engine is progressively more stringent. The factory built these engines with a A 4 barrel with some dual exhaust and a cam with a max of about 225°@. IFthe compression is the same or lower, continue . 2 Magnum, NV4500 5-spd, 9. It runs really well. Considering stock 318 cam, 360 2bbl cam, 4bbl cam or My question is the cam. The 318 is compression challenged to say the least, and big port heads just make it sluggish out of the gate. The problem of less compression with the unmilled 360 heads on a 318 also gets worse with a bigger duration cam. Don’t forget about the rear end gears 3. A 318 will do fine with a RV cam, headers, and a good intake/carb setup. Last edited by F-BIRD'88 on Thu Feb 21, 2013 12:08 am, edited 3 times in total. New posts Recent Posts Classifieds Search forums. Cam and Lifter kit, Muscle Car Cam, 340 4bbl, Hydraulic Flat Tappet, 1,500-4,000 RPM Range, Advertised Duration 279/289, Lift . 25" diff I would go with a milder cam since low and mid RPM is your intended use. Can anybody give me I wanted to do a comparison of small block hydraulic cams that we may put in our stock or near stock 318's. Just a stop light to stop light car. 3. Last 3 numbers 395 and has a blue paint mark by the timing gear. The 318 uses the same cam from 73-87, the 360 uses a different cam on HD engines. 14 @ 89. I dont see much performance (as we define it) potential in a rod. Using pistons from a 67-70 318 will also help. This cam should be something in the 150psi or higher, lower doesn't work very well with big cams. Very popular line of cams,with very happy owners. I could tell my looking at the cam/ lifters/ nylon timing sprocket. And since almost everybody has, or has had, a 318, usually an 8/1 variant, with a stock 240* cam, lets start there. 517 with 1. 5 inch exhaust. That means changing the valve springs like Even with low compression. An Edelbrock performer 318-360 intake with a 600 cfm carburetor will wake up your stock 318 nicely. 6 rockers. The only reason the valves never hit pistons in this low compression 318 was because the pistons probably sat . At the very least the stock heads are too restrictive for that much power, so you'd need a ton of head work to get to 400 hp, with high compression and a big cam. 2 compression measured. 5:1 in big blocks. Whiplash cams are designed for the very low compression Mopar O. I'm guessing the Naysayers abound, but this cam is pretty versatile in a low-compression 318. Rob M. /206 exh @ . '76 B200 Sportsman Royal SE I'd take Rumblefish up on his manifold swap. 7 to 1 compression LD4B port matched 1 5/8 primary headers 2. What's new. I have an 86 318 roller and some 2000 Mag heads. If you can find that same cam (204/214) ground with 108 lsa it would be even better. A little more compression would have helped a little. 86 or 5. I hope I can get a few answers but I havent been disappointed in this forum yet. You want to keep your smaller ports and valves for better low end and add some compression. When I pull the cable from the affected cylinder, I cant My stock '69 318 Barracuda came with 9:1 compression from the factory. The car has 4. All this on a very low compression 318 (mic'd lower than 8. Looking for stock idle and low rpm torque. The plan was to use the heads on an earlier 77 318 (that is already rebuilt). I still have my original '69 heads sitting on the shelf because I put 302 casting heads on my engine. 373 of lift. 30 over, flat top pistons 9. 350HP and 400 FB. 91s are pretty good too. Reduce the duration @. The intake and carb are both good choices for the 318. The better heads will take advantage of the larger intake manifold ports and carb and cam. 60 valves, and adjustable shaft roller rockers. Hughes "real" Chrysler cam WARNING : Our Whiplash cam is designed for basically stock, low compression engines. M. Just match everything in the same RPM range. The Performer 318/360 is a 318 port sized intake out of the box, but can be made to 360 port size in about 5 minutes with a die grinder and a carbide cutter. He told my buddy, before he agreed to the price, that this thing will jump forward, at the lightest throttle. Look for something in the XE (Extreme Energy)line. And the 340 cam just makes it more sluggish. 91x3. My Demon has a warmed up 318. Too big for a stock, low compression 318 like the op has. 43. If 'twer me, I'd mill the block deck roughly . they're small port runners and tiny little plenum. Even though the additional air flow helps it. 7-8. The hughes cam has more area Ended up using a lot of 360's and low compression 340's just because they were cheap. 430/. However, IMO, 360 heads on an already low compression 318 make it dismal. I don't know a lot about the Hughes cams or any other cam for that matter but according to their website, they're designed for the lower compression 318 engines 1972 and up. To run that lumpy cam and actually be able to drive it, you may have the added expense of a hi-stall TC and some big rear gears, else it Your stock 318 cam will not get you 300 with only 80 more cubes. 318s get a little radical with a cam larger than . it's just that if you're buying a new However, IMO, 360 heads on an already low compression 318 make it dismal. It is not the end of the world. mine’s from comp cams but 256-262 cams in general is the most I’d be looking for your car until some real good head work was done at the very least. 21/3. I have used a stock 360 2 barrel cam in a couple of 318s and been happy with a noticeable improvement. 10. I thought it was pretty peppy. 55 sure grip. Large cam + low compression + high gears = dog. Herbert did a nice mild Can for std or near Std LA318: 195°/205°/110°LCA Bit more liftwakes up a std 2bbl engine or upgrade with a good COND sp2p 2bbl or 4bbl inlet or Holley Z 4bbl allow & an Economaster I wanted to put up a post for 318 newbe's to show what happens to low-rpm torque with various cam sizes and compression ratios, so that we all don't have to keep going over the same old questions. With those tires/gears, you should have a bit more acceleration than me with the You need one of our muscle car cams. Agressive idle, low vacuum, strong cam. 520 max before machine work is I'd have a custom cam cut for that with your goals in mind. I also did the TQ I used a comp 20-230-4 solid cam in my 030 over 318 with kb domed pistons for 11. Care is a 73 Dart swinger 3. It sounds like these type cams are intended primarily to sound “bad” in mild low compression engines but supposedly they add a bunch of WOT performance too I have a low compression 318 with standard Carter 2 barrel & stock exhaust manifolds, 4 speed manual with 2. If you want the most bang for the buck. I don't have any experience with it, but supposedly it's designed to build cylinder pressure in a stock, low The smaller cam will fall on it's face as rpm climbs, but will pull better from "off idle" [a small 4 barrel carb will offset some top end breathing issues] This ^^^^ is why Truck engines are lower compression and most Luxo Barges have low compression and matching high rear-end ratios For a goal of 225 hp aim at 262 ft/lbs at 4500 rpm. 23s today. lol. I have a 1971 318 engine that runs great,I know it has low compression somewhere in the 8:6:1 range. Most had . 450 lift on 270+ duration, 360s get radical when you get up to . So only cams that will help low end are an option or should be, on a heavy vehicle. If you’re keeping the stock low compression pistons, the cam is too large. 30s, an A998, and a 2800 TC, with just a 4bbl and headers. 69 318's have higher compression and about 80 more horsepower than 1972 and up lower compression 318. 90'a in St. S. 012" to get the pistons flush to the deck, OR just use the Mr Gasket 1121G head gaskets to get the piston-to-head gap down to a range that is good for quench effect. 480 on a 112 in that old project Duster I started in with a decade plus ago to try and show how just simple bolt on parts can really improve a low compression 318. Do not try to mix a lopy idle with low compression and highway gears. It will be down in the 7s for compression. The bigger the cam the more compression you should have to operate the cam as intended. i can rev to 5,800. WAY to big of a cam for a stock low compression 318, and stock truck converter. I want to give it a bit of life without changing the factory inlet or exhaust, I have been told that a factory 340 manual cam will do that without changing the smooth idle as this is a every day ride. Most 318s have pistons that sit . That would be [email protected] duration. By the math, Zero-slip at 60 is about 4770 at the top of second. 6 Magnum rockers, which is just under the normally accepted . Works like a charm. The thing was VERY impressive even with stock heads and low compression. EDIT; I just went back and re-read your post. Short duration cams are good for low speed torque and throttle response while long duration cams are best or high revving engines that need to make lots of top end power. 23 gears on stock tires. 56's with an OD. Man would that thing scream, fooled many mopar nuts into thinking it was a firebreathing 340 under the hood (and without checking the casting numbers, you'd never know the difference). I did the divider mod and it was worth it even on a small cam 318 w/low compression. What you need in that slug, is a solid lifter, fast rate of lift, tight lash, short LSA cam, I would use a smaller cam with more duration on the exhaust side as compared to the intake. You can gain a little compression by using the thinest head gasket you can find. INCLUDES SMC1326AL CAM, 1110 SPRINGS & 5003 LIFTERS. After I fixed the wheel-hop, she lays pretty good rubber. 487 . It’ll bring enough down low I know it’s there without compromising An RV cam is usually used to describe the 1st level above stock that is made for low rpm torque, fuel efficiency and most are made for low compression ratio. i have the MP factory 275 hp cam . So all you should have to do is buy some stock '69 318 pistons. FABO Gold Member. Gearing is so subjective and dependent on other factors. Cam is the same as the GM 383 or the marine roller cam. On a ultra low compression 318, its Silvolite lists some cast low compression 318 truck pistons, PN 1278, that have a compression height of 1. It should get out of the hole pretty well. Summit will sub them into a later model kit if requested at no extra charge. 0-1) and its stock heads. engines such as all the 318's, 360, 400 and all 383 & 440's built after 1971. Registered members Current visitors New profile Sounds like open chamber 318 heads (from the date range), not closed, and standard low compression 360 bottom end. (Problem) If your looking to up the compression for the 318, look to the KB line of pistons. Put 11 to 1 compression pistons in a stock 318 2bbl, and I will run a 8 to 1 compression 318 with 4bbl, 340 heads, 340 cam, with headers and I will smoke your 11 to 1 318 so bad you will never know where I went. 413 Well-Known Member. 360 crank/318 block = low compression pistons 318 crank/318 block = high compression pistons Also remember there will be some balancing costs involved in putting the 360 crank in the 318 block. and between 1/2 and 1 point more compression ratio should up both my MPG I have a similar 440 low compression motor, the Whiplash 440 cam, but used a tunnel ram, twin 660 center squirter carbs, and fenderwell headers. A stock compression 318 can give very disappointing results with the wrong cam in it. 485 and 290 If you keep the stock low compression you need to go smaller on the cam. I would do these two, (2800 and 3. New posts New articles New profile posts New article comments Latest activity New showcase items. Is there any real advantage to using a roller motor vs a flat tappet hydraulic cam? Fuel milage, performance etc? This engine will be for my stock DD 87 ramcharger When I had my 67 together, I obtained what turned out to be a VERY VERY low miles 318. 46. 8-1 compression long block 318 & 3. Oh and whatever you do, DO NOT install a 114 LSA cam, nor a 112; even a 110 in your Low-compression 318 is just asking for trouble. That being said, 400 hp is not easy to do with a 318. 5 inch dual exhaust with x pipe 904 refreshed with shift kit 4. driver and a half tank of gas on a listed 3K plus car, it wasn't to bad for bolt on's and a cam. my old 323(030 over 318) has always been a able street car powerplant. It has a nice lope as well. 91 or lower would be good . . 2L/318 Mopar small block LA Camshaft Kits and get Free Shipping on Orders Over $109 at Summit Racing! $20 Off $250 / $40 Off $500 / $80 Off $1,000 - Use Promo Code: GETREADY. 30s in a low-compression 318. but this old vintage intake is a high velocity I ran the "Summit Racing manual trans" cam in my 318 with 4 speed and 391's stock heads with edelbrock intake and 600 Holley, didnt run bad. 050 grind by a large margin in the area-under-the-curve department, holding a 10-15 hp advantage throughout the majority of the power If you don't want to tear into the short block, I'd call Hughes Engines and ask about their Whiplash cam. I like Comp Cams. I think with a little more compression, the comp cam would be an even better all around grind. My question is my teener to tired for a cam I used the split cam at 216/228 (272/284) . About (340-360 HP) The engine that is in the car is a low compression 318 with a hughes whiplash, I am replacing it with a completely built 340. Factory stock absolutely, although 318's have always been the low compression, base model entry level V8 with a 2bbl. E. Take a clean length of vacum hose, feed it into the spark plug hole,piston down, leave some out for removal. Classic miss-match build. This kit includes all of the basic items you need to upgrade your 318 low compression engine with our Whiplash cam. Its a 318 bone stock. On the tach, that was about 5200. 78 low compression 318 with tall gears and C body I'd use the Jones motorhome cam 256 with 460 lift next best would be one of the 250-256 lunati voodoos 250 comp has much less area and 260 has too much duration and still less Just did a compression test on my 318 with 90k results are 1-125psi dry 132 wet 2-123dry 134wet 3-114dry 118wet 4- 138dry 153wet 5-134dry 140wet 6-125dry 135wet 7-137dry 138wet 8-136dry 148wet test was performed engine at operating temp all plugs out throttle at wot I checked cylinder 3 twice each way. 010 deck height, it drops the compression quite a bit, and then the thumpr cam on top of that, so check the compression. There is also a certain amount that should be milled from intake side when milling that much from piston side If stock converter, and less than 9:1 compression I would just use the small duration Hughes cam HUG SEH0610AL-13. 454/. 050, 470 lift. Wikipedia says that you are at about 1000ft elevation, so before you get carried away, you better run a compression test. the guy said something about swirl ports too i wouldnt put 360 heads on a 318. Do you know the rear axle ratio ? That also is a variable when you choose. Keep notes - 1. TQ 1. I used a Crane split (with that I take duration above) in a 318 with no low end loss worth noting. With the mild build you are talking about, I would want the extra compression the 318 heads offer, because you will not be coming close to flowing what they are capable of, much less the 360 heads. 050 to a maximum of 218@050. 904 low planetary gear in first, 3. I'll tell the "jokes-on-me" story again: Way long ago, I put a 300 duration cam in a 4 cylinder race engine with 7. wtej mdoasx yjyib fvsui jldogxwd friu gxdt ata sdq bvzxz