I have the opportunity to pickup a shortblock which has Wiseco nitrous pistons in it. I was told that they are domed but have valve reliefs. The heads which would be going on the block are 5.7L heads milled .030. Should I be concerned about compatibility?

I guess what I'm saying is, the amount of milling on the heads won't cause problems with the dome on the piston? I was told he had 11.5:1 compression with his last set of heads.

Thanks!

 

they cant have too much of a dome if any with only 11.5:1. i would say more then likely they will work fine. usually aftermarket pistons put plenty enough valve relifs in there also but i would check everything anyways. its always effy when buying used engine parts. you never know.

 

I ran them in my 346" ls1 motor. I sprayed a 300 shot on them regularally with no problems...still in the motor to this day.


I also ran a milled head with .600 lift with no problems...