Rockitansky

Hi all, I have been reading where torque specs on a KS are critical. I did get a knock retard on my engine.

The trick here is I have a LS3 aluminum engine with older LS6 knock sensors that show different torque specs. It was a crate engine LS3 swap into a 2002 C5 corvette.

Listed below are the torque specs, which spec do I use? Im thinking 15ftlbs, LS6? THX Brian!

LS Engine Variant Torque Specification LS1, LS6 15 lb-ft LS2, LS3, LS7, LS9 18 lb-ft LS4, LSX 20 lb-ft LSA, LSX454 15 lb-ft LQ4, LQ9 15 lb-ft L33, L59, LM7, LMG 20 lb-ft LR4, L76, L92, L98 11 lb-ft LS3/L99 (Camaro) 15 lb-ft LS3/L99 (Corvette) 22 lb-ft LS2 (Trailblazer SS) 15 lb-ft LS2 (GTO) 18 lb-ft LS2 (CTS-V) 15 lb-ft LS2 (Chevrolet SSR) 15 lb-ft

1FastBrick

iTrader: (16)

Yes, if you over tighten them they can break the sensor internally. I believe 15Lbs is correct for the older style knock sensors found on the LS1/LS6 Gen 3 style engines.