BTR .660" & .685" Dual Valve Spring Kits, LS9 ApplicationsBTR . 660" & . 685" Dual Valve Spring Kits, LS9 Applications BTR PLATINUM LS9 DUAL SPRING KIT . 660" LIFT SK006 The BTR Platinum Spring Kit would be inducted into the LS Aftermarket Hall of Fame if such a thing existed. Whether youre putting together a daily driver with a mild cam, a 600 hp N A stroker, or a turbocharged 1000 hp brawler, our Platinum Spring Kit will make sure your valves are right where your cam wants them to be at all times. They are

-21047 For 2000-2002

Outflows Factory Intake by 14%

black anodized bushing saddles

It will have a nice lope at idle but nothing too radical

This allows your Corvette's engine to inhale a larger amount of air than the factory air filter assembly

This kit includes: SP001-1 dual polished springs (Qty 16)

VS LS valve seals (qty 16)

600" 110 LSA 107 ICL

If necessary specify C5 or C6 covers in purchase notes

Gains over 20rwhp

The outer sleeve that surrounds the conductor assembly is just as impressive

Fits manifold part numbers 2702