LS3 vs L99 valve springs?
08-06-2012, 11:29 AM
#2
From what I read in a mag, the L99 uses solid intake. Which would mean different valve springs. I would try crossreferencing the OEM part numbers though. I couuldn't imagine why GM would use a heavier valve on a LS3 they know the public will rev the crap out of. Either way, I'd go aftermarket springs as stock LS3s are barely good enough for a stock engine.
