318 cam suggestions?
#2838215
10/28/20 08:15 AM
10/28/20 08:15 AM
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Joined: Jun 2003
Posts: 2,412 Weatherford, Texas
RapidusMaximus
OP
top fuel
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OP
top fuel
Joined: Jun 2003
Posts: 2,412
Weatherford, Texas
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I'm freshening the original 318 in my 74 2wd half ton (256k) and I'm considering installing a dual plane intake,4bbl, and simple dual exhaust with the stock manifolds, I know headers would help but I just don't want to deal with the PIA factor. So...my question is cam suggestions for this combo, just looking for something with a little to no lope, and more low rpm torque...any experience/suggestions welcome, thanks
1968 Plymouth GTX 1974 Dodge P/U Long Bed Stepside 318 2019 Ram 2500 6.4, auto, 4WD
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Re: 318 cam suggestions?
[Re: RapidusMaximus]
#2838217
10/28/20 08:21 AM
10/28/20 08:21 AM
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Joined: Nov 2003
Posts: 10,228 Colleyville
3hundred
I Live Here
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I Live Here
Joined: Nov 2003
Posts: 10,228
Colleyville
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I'm freshening the original 318 in my 74 2wd half ton (256k) and I'm considering installing a dual plane intake,4bbl, and simple dual exhaust with the stock manifolds, I know headers would help but I just don't want to deal with the PIA factor. So...my question is cam suggestions for this combo, just looking for something with a little to no lope, and more low rpm torque...any experience/suggestions welcome, thanks Before I went 360 in my '82 Ramcharger I used 360 4bbl heads and stock 360 cam in the 318, it worked well. I also used Doug Thorley tri Y's 114Y, awesome headers, no more trouble than manifolds. I'd also look at stock 340 cams if you want a little more.
'68 Fury Convertible '69 300 Convertible '15 Durango 5.7 Hemi '16 300 S Hemi
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Re: 318 cam suggestions?
[Re: 3hundred]
#2838618
10/29/20 05:16 AM
10/29/20 05:16 AM
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Joined: Jun 2003
Posts: 2,412 Weatherford, Texas
RapidusMaximus
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top fuel
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OP
top fuel
Joined: Jun 2003
Posts: 2,412
Weatherford, Texas
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[quote=RapidusMaximus]I'm freshening the original 318 in my 74 2wd half ton (256k) and I'm considering installing a dual plane intake,4bbl, and simple dual exhaust with the stock manifolds, I know headers would help but I just don't want to deal with the PIA factor. So...my question is cam suggestions for this combo, just looking for something with a little to no lope, and more low rpm torque...any experience/suggestions welcome, thanks Before I went 360 in my '82 Ramcharger I used 360 4bbl heads and stock 360 cam in the 318, it worked well. I also used Doug Thorley tri Y's 114Y, awesome headers, no more trouble than manifolds. I'd also look at stock 340 cams if you want a little more. [/quote Thanks for the tips, dropping the block and crank off at the machine shop tomorrow to see what they need, then I'll go from there. I may have some 360 heads out in the deep recesses of the shed, have to go treasure hunting...
1968 Plymouth GTX 1974 Dodge P/U Long Bed Stepside 318 2019 Ram 2500 6.4, auto, 4WD
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Re: 318 cam suggestions?
[Re: wally426ci]
#2860839
12/16/20 03:19 PM
12/16/20 03:19 PM
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Joined: Apr 2012
Posts: 59 Florida
Sweet5ltr
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member
Joined: Apr 2012
Posts: 59
Florida
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We just finished up a restoration on a W200, and ended up with the Summit Racing 6901 camshaft & Lunati lifters (buy 'cam only' and purchase your own GOOD lifters). Now, in saying that, you don't need to go with this camshaft, I would recommend one with similar specifications, around .450" lift & 215-225* duration, 110-114 LSA.
Engine is a 77' 318 w/ Holley 4160 carburetor (600), Edelbrock Performer manifold, OEM heads, longtube headers (1 5/8" - 2.5" collector), and 2.5" exhaust w/ x-pipe to 3" single with Cherry Bomb Extreme (single chamber) muffler. Idle quality is very smooth, even with the factory converter it doesn't drag it too far down going into gear. Light amount of lope while cold, as you would expect with a classic 'HP' sound, not really noticeable when warm. It's not too aggressive, but goes along with the truck fairly well, no one will know it's just a 318, it 'sounds' like a 440.
What I was most surprised of was the tune. I run a Wideband AFR gauge on all my setups, and with this combination, the 'box stock' Holley with no adjustments was near perfect. 15:1 AFR while cruise, drops down into the 12-13 AFR range with even light WOT, with no hesitation or bogs. I'm stating this because sometimes, tuning with even a slightly more aggressive camshaft can be tough! If you're running a similar combination, you should be perfectly fine.
Like Wally posted, all of the camshafts we are going to recommend are somewhat in the same range. Just make sure you don't use inexpensive lifters, go with a company that either produces them themselves or has a great track record.
Last edited by Sweet5ltr; 12/16/20 03:21 PM.
1969 Plymouth Road Runner (440 w/ Boost! RIP) now a low-deck 470 with hotchkis suspension, nascar boom tube exhaust, & big brakes.
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