billgough

my uncle scored a couple of ls6 cams for cheap, he has an 06 gto, and i have an 07 gmc sierra with the iron block 5.3.

sdpc couldnt tell me what length pushrod i should go with when these cams go in, has anyone done this swap? im new to ls series motors and i dont know if the 5.3 i have has the same basic parts as my uncles 6.0.

the ls6 cams have a smaller base circle, and that is the reason for a longer pushrod, correct? could i just subtract the base circle difference and add that to the pushrod length?

Scoggin Dickey

iTrader: (34)

Do you know which year model those cams are? There were a couple different part numbers which had a couple different base circles....your best bet is likely a pushrod length checker to be sure (or measure the base circle so we can be sure which length you need)!

BigBronco

iTrader: (2)

You could do that Subtraction, but to be sure, just purchase a Pushrod Length Checker. (Jesel and a few other places have them)

Better to be safe and on the money then using a set of dial calipers. Either way will work, but it will be closer with a nice pushrod checker.

silver01z06

your uncles 06 gto has an ls6 cam already