What compression height on your pistons do you guys normally run with the 408+ cubic inch forced induction engines? Im lloking to be throwing about 19-25 psi of boost with maybe a squirt of nitrous for holeshot only... Is 1.125" sufficient?

 

compression height is a component of stroke, deck height, rod length, and the amount you want the piston 'out of the hole'. if you have all of this other info i can help you out...

 

http://www.diamondracing.net/cocalc.htm

btw this is really nice, and FYI my pistons for my 370 were a 24cc dish. hope this helps!

 

I wouldnt think it's enough unless the pistons are made specifically for that application.

Bret

 

They are -30cc dished pistons with .107" valve reliefs cut in them..

 

For most F/I setups you really don't want anything below a 1.250" C/H. Most shelf pistons are in the 1.300"s anyways. Just make sure that you have enough quench so that you don't smash the pistons into the head.