Quote: If you can use a shelf piston have it bored to 4.375 , assuming it sonic checks ok , that is a standard oversize for 400 based strokers.
Assuming this hasn't been said.
Bore .035 over, got it. Thanks!
Looks like the 1 7/8's headers I have are specific for 383 or 440. The 1 3/4's are interchangeable, dang. Waiting for a call back from TTI. Looks like I gotta find someone to swap these with.
