Cylinder Head decision

cc your heads and the ones that you plan to use to make sure that you won't drop too much compression.

Here's a thread that can help you cc the heads at home:

http://www.forabodiesonly.com/mopar/showthread.php?t=278215


I just found some 67 273 heads at 63 cc when the books say they should be 57...

Just because they are closed chamber, doesn't mean that they are smaller chambers...

However, I also checked a set of 68-72 318 heads and found them at 79 cc ---> way bigger than they are supposed to be "by the book"...

check your parts to see exactly what you have and where you are going...