ls1 1990 VN

Had PRC stg 2.5 heads fitted, run the car on Sat & Sun it started making a
Bruuuddddeerrrr Ha ha sort of noise when under load, definetly not the valve train. Have been told by an Engine builder it sounds like a piston which could have cracked its skirt,not valve piston either, bloody thing sounds like a diesel.
My question: What is the best brand of LS1 Forged Pistons to buy & as i'm in N.Zealand who or what sponsor carries them.
Thanks guys, wayne.

PREDATOR-Z

I like Wiseco

Steel Chicken

iTrader: (3)

why would swapping heads break a piston unless you had insufficent valve clearance?

JL ws-6

iTrader: (50)

In your sig, you have mention of a chromoly flywheel that si lightened.. who makes that?

As for your question... diamond makes some good stuff.