Re: 1954 valve timing

Posted by Rusty O\'Toole On 2009/12/14 16:05:22

Cam timing is an interesting subject. By advancing the cam you get better cylinder filling at low speeds, retarding the cam gives better cylinder filling at high speeds.

By advancing or retarding the cam you can "rock" the torque curve about its midpoint.

Stock car racers used to take advantage of this. They were forced to use a stock cam, back when there were no factory performance cams, but by advancing or retarding the cam could get more power where they wanted it.

And about the cylinder head. The exact same head will give a higher compression ratio on a 327 than on a 288. Because the cylinder volume is larger in comparison to the head volume. So your 288 head will have more compression on your motor than on the original 288.

Whether it is more than the stock head, I do not know.