[Chevy454]

It seems like the piston knock is a hit or miss kind of deal. Mine has it, my brothers doesn't...2 others in town, they don't have it, but one of those 2 owners had a previous car that did.

Oh, and I forgot...tranny problems. Any of you LS-1 guys ran into that? It blows my mind how the Vipers and ZO6 cars have no problems with the T-56 (yeah, they get different ratios and forks/synchros) yet a LOT of the F-body guys run into trouble (my car is on it's 3rd!). Kind of makes me wonder how the T-56 will EVER live behind some of the ZL-1 cars...