BOTTLE ROCKET

iTrader: (4)

Does the 99 engine use the 12482062 and 12482063 valve stem seals? On a vendors web site, it list these as fitting 2001 and up

fast377

iTrader: (52)

The 99 cars use the seals that are required for dual springs. The seal and spring seat are two seperate pieces. I think gm changed them in 01 on the z06 (and all the engines) to a one piece design (seal and spring seat are made together). Those will not fit dual springs.

BOTTLE ROCKET

iTrader: (4)

Does it matter that I'm going to a single behive (cc 918 spring)?

fast377

iTrader: (52)

You can just use the ls6 style seal then. They will work with the beehive springs. That's what I have on my daily driver.

fast377

iTrader: (52)

The part numbers you have listed are the ls6 one piece style.