Chad Speier
Active Member
Grumpy does a EXCELLENT job of posting examples, tech articles, photos, of cylinder head development. I like working on cylinder heads that allow you to get the proper area for the task. However, when you can't then shape become KING. Nothing shows this better than a 172cc Super Stock head. The guidelines are 172cc port, 65cc exhaust port, and 61.5cc chamber. These engines are 360 cid, peak at 7000 rpm, and make 680+hp. They have 2.00in² MIN at the pushrod and move 270cfm.
I had 50 hours in this set.
I had 50 hours in this set.