Can i use Sealed Power piston H857CP for my 408 build? Was going to build the LQ9 with the stock items with the .030 over pistons. After thinking on it I desided to go ahead and stroke it. Right now the +.030 pistons are mounted on the stock rods. Need to know if they will work on 6.125 rods on 4.00 stroke crank in an LQ9.

 

If the compression hieght was made for stock rod and stock stroke then no. A 4" crank will stick them way out of the hole.