I need some advice on what material to use to make a spacer to lower the compression on my old Pro Stock Hemi to get it down around 11.25:1 so I can run pump gas.
From all the calculations it looks like I need a total of .155" thickness including head gaskets so my questions are -
1. What material & grade do I make the spacer from?
2. What type/material head gaskets do I use with cast iron block, ? spacer & alloy heads.
3. What thickness head gaskets should I use, the thinnest possible to keep the spacer as thick as possible or what?
I know changing the pistons would probably be a better idea but the block & pistons were owned by Don Carlton & I want to keep them together for personal reasons, Thanks