Originally Posted by sbchevfreak
Believ it or not, they do run a slight interferance. From the engine mechanical specs for the 6.2L LS3:
Piston - Piston to Bore Clearance - Production
-0.036 to +0.016 mm
-0.0014 to +0.0006 in
They fit them from a rather tight interferance to a slight clearance. Different...
Thanks for the tech specs. Never got around to checking into it. I was also vague on purpose, lol, if I said a full thou or more (and I didn't know exactly) someone would have argued. I was just generally informed with no exacts given.
Just to add, people have to keep in mind the cyl diameter itself expands also. In a marine app running ~70* coolant you need more piston to bore clearance(~.005 with 2618 pistons) due to the cool temp coolant keeping the cyl diameter from increasing.