340 cam for 318

cookietruck said

It’s 110.
Had one in a 360 i pulled apart to rering. Ran good, would probably act like a somewhat hot cam in a 318. Mine was in at 110 or 109, cranked 185psi and idle vacuum was 13-14”.

Would def install at 104-106 in a lower compression motor.

I think that cam is the same as the crane 272.

Click to expand...

@Baggs - What is the rear ends gear ratio and tire size? The cams mentioned below work well with 2.94 to 3.55 gear ratio pretty good.

The weird thing with Chrysler is for a long time there is a gap between the 3.55 to 3.91 ratios. The 3.73 went missing in the early days. It’s available though.

If your gear ratio is at 3.23/3.21 or numerically lower, I would not use a larger cam and the stock converter. Read on below.

The Crane is a 272 (216@050) .454 on a 112.
This cam has a mello idle, easy driver, a basic upgrade cam that works well in a stock engine with or without bolt on’s. Exhaust manifolds or headers, 2 or 4bbl carbs.

I used the split cam at 216/228 (272/284) .454/.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. The Duster did end up managing some high 14 1/4 runs on a ‘79, low 7.8-1 compression long block 318 & 3.23 gears on stock tires.