Originally Posted by blakethechop
after some advise for my 455 pontiac .has anyone used these pistons they are 0cc to increase compression.also what are some options for thin head gaskets without having to o ring i really appreciate all the help im getting
I've never used those exact pistons
, but KB are OK pistons- just pay attention to any recommendations they may have regarding the top ring gap and piston-to-wall clearance
Also, the -060
is for a 0.060" oversize piston (Summit's catalog listing makes it look like that p/n is for a standard piston). -030
would be a 0.030" over, etc. So be sure to order the right oversize for your engine. The machinist will need to assess the condition of your block to give you his oversize recommendation.
Then you have to order the pistons and give them to the machinist for him to measure before doing the final hone. The type of ring used (plain, moly, etc.) needs to be known as well so the hone finish
is correct for the rings being used.