tiresmokinV8

iTrader: (6)

Im doing a vvt cam swap and removing the heads to swap in ls3 intake valves on my 08 ly6. The engine is a pullout with 8100 miles. I know gm mls headgaskets for sure but what else? Is it like the older sbc 350 where once you pull the timing cover you have to replace it? Also do I have to replace the rear crank oil seal where the flywheel bolts up? Ive been reading posts saying that other members have had oil leaks here. Are there any bolts that are one time use only besides head bolts and harmonic balancer bolt?