BrianI

ZL2256F is the part number. Need to freshen up my shortblock

my1994z28

Do you plan on spraying the motor?

BrianI

No I don't. I guess I wouldn't need forged would I?

96capricemgr

I can't find it again but one time I looked it up and that pistons was like 15-20% heavier than stock. Something like 610grams when stock is about 530, LOTS of additional connecting rod stress there.
They are a TRW design and this is what I found when I went to look them up at Flatlander.
http://flatlanderracing.com/trwchevy350.html

MachinistOne

SpeedPro/Sealed Power/TRW are all cheap heavy pistons.

henryz28

I would look into probe pistons; I have probe 12334 pistons, they are lighter than stock and a lot stronger.