I am getting ready to start a 318 build and would like to know how much compression a stock bottom end can handle and how much is achievable. It will be running on E 85 and will be race only.
A truly stock bottom end isn't going to yield as much compression as you'd think. The pistons are too far down in the hole, and it would take some seriously (maybe even impossibly) small chambers to get true 9.5:1 and up.
