Originally Posted by
turboboss
if they are the same pistons as mine je 185915 then on a zvh if i remember 8:5:1 they are meant for the black top engine but can be used in the sliver top which i am currently running.they are 85.007 mm bore.
sean
Are you running a decompression plate still?
I have these Rod & Pistions a ferriday de-cat plate on a zvh lump.
Im temped to remove the plate and run 8.5.1 if correct? and lower boost but a better turbo GT28 or GT30.
Jim