Performance

Dan the man said
You guys have explained to me about ivc, also on how to figure it out. If I'm understanding things correctly the stock 318 cam has 55* ivc and the 340 cam has 69* ivc, wouldn't closing the intake valve later lower the stock compression more? I don't mean to be a pain but how can the 340 cam wake up the 318 if it does lower the cr? I enjoy learning what I can. Wanting to build a engine going by pure stock rules but having a little work done to the cylinder heads.

Because the cam is getting more air and fuel into the engine. In the 340 cams case vs the OEM 318 cam, it is a lot of air and fuel.

273 said
Bought a China airgap and mild roller cam, would like to do the intake separately to see how much that improved low end by itself.

Your going to like the dual plane.
:thumbsup:

niceolddart said
This looks like a very touchy subject.

Only when you split hairs and break balls.