440 comp. ratio question

Yes they are taller. Depending upon the size of the combustion chamber of your 452 heads, you'll be some where around 8.9-9.5:1. That is what we had when we dyno tested this engine with those pistons.

http://www.forbbodiesonly.com/moparforum/showthread.php?64775-Pop-s-440-is-near-ready-to-dyno&highlight=pop%27s+440