LS6 Pistons

[cdn454LS6]

Can anybody please tell me the differance between the two?
GM 3963550 piston
GM 3963551 piston
Thanks very much http://www.yenko.net/ubbthreads/images/graemlins/confused.gif
Ken

[VintageMusclecar]

Ken;

I believe the 550 piston is the original 11-1 closed chamber LS6 style piston, and the 551 is the 12.25-1 open chamber LS7 piston.

Hope this helps.
Eric

[cdn454LS6]

OK, Thanks very much Eric, That helps alot.
Ken http://www.yenko.net/ubbthreads/images/graemlins/smile.gif