Some parts are not legal for sale or use in California or other states with similar laws/regulations—see pg. 2 for details. WARNING: For Proposition 65 information, see pg. 2 Trick Flow by PAC Racing Valve Spring Upgrades for GM LS Valvetrain control is critical in performance engines. Boost the performance of your GM LS-powered muscle car or truck with Trick Flow by PAC Racing valve springs or valve spring upgrade kits. The PAC Racing springs are manufactured from premium Pacaloy™ chrome-silicone steel that’s double shot-peened beyond AMS (Aerospace Material Specifications) reliability standards for exceptional endurance. Choose from the following options: .660" Double Platinum Valve Spring Kits These polished, double platinum drop-in replacement springs deliver the durability customers want with the valvetrain stability required for aggressive camshafts. An added advantage is that the springs play nicely with stock rocker arms and lifters. Rounding out the kits are precision-machined 7-degree valve stem locks, Viton® fluoroelastomer canister valve seals, valve spring I.D. locators, and a choice of chromoly steel and titanium retainers. *Viton® is a registered trademark of DuPont Performance Elastomers. Coil Spring Specs: Outside Diameter: 1.304" Installed Height: 1.800" Closed Spring Pressure: 160 lbs. @ 1.800" Installed Height Open Spring Pressure: 419 lbs. @ .660" lift Maximum Spring Lift: .660" Coil Bind: 1.050" TFS-2500286P Chromoly retainers, each TFS-2500287P Titanium retainers, each TFS-16905P-16 Valve springs only, set of 16 Drop-In Valve Spring Sets These drop-in valve spring sets improve valve control on modified engines. They are available in two styles—beehive and dual. Beehive valve springs are meant for mildly modified engines. Their tapered design allows the springs to fit inside the factory valve seats so they can be used with the OEM retainers, locks, locators, and seals. Dual valve springs are for more aggressive cam profiles. They reduce harmonic vibration while permitting the engine to rev higher safely without valve float. TFS-16918-16 Beehive, 1.290" O.D., 130 lbs. seat pressure @ 1.800" and 318 lbs. open pressure @ 1.200", 1.140" coil bind, set of 16 TFS-16904-16 Dual, 1.290" O.D., 150 lbs. seat pressure @ 1.800" and 400 lbs. open pressure @ 1.125", 1.010" coil bind, set of 16 TFS-16306-16 Dual, 1.275" O.D., 150 lbs. seat pressure @ 1.800" and 420 lbs. open pressure @ 1.200" 1.100" coil bind, set of 16 TFS-16905-16 Dual, 1.300" O.D., 160 lbs. seat pressure @ 1.800" and 425 lbs. open pressure @ 1.130" 1.065" coil bind, set of 16 Valve Spring Upgrade Kits Get everything you need in one box to upgrade the valve springs on your mid-to-heavily modified LS engines with stock GM or Trick Flow GenX LS heads. The kits include dual valve springs, retainers, locks, seals, .500" I.D. locators (except where noted), and instructions. TFS-2500280* Chromoly retainers, 1.290" O.D., 140 lbs. seat pressure @ 1.800" and 380 lbs. open pressure @ 1.200", 1.010" coil bind, each TFS-2500286^ Chromoly retainers, 1.304" O.D., 160 lbs. seat pressure @ 1.800" and 425 lbs. open pressure @ 1.130", 1.050" coil bind, each TFS-2500287^ Titanium retainers, 1.304" O.D., 160 lbs. seat pressure @ 1.800" and 425 lbs. open pressure @ 1.130", 1.050" coil bind, each TFS-2500300^ Titanium retainers, 1.304" O.D., 150 lbs. seat pressure @ 1.800" and 420 lbs. open pressure @ 1.200", 1.110" coil bind, each *OE rocker arm bearing upgrade kit recommended, part number TFS-30700500. ^Not recommended for use with OE rocker arms. TFS-2500286P Variable Valve Timing Delete Kits for GM LS The Variable Valve Timing found on GM LS engines, commonly referred toas VVT, is great for fuel economy but bad for making maximum horsepower. Many people choose to remove it, and a VVT delete kit is required when removing an Active Fuel Management (AFM) system. These fully engineered Variable Valve Timing Delete Kits from Trick Flow include all of the components required to do the job right. The kits include a 4X camshaft gear, crankshaft gear, true roller timing chain and damper, LS2/LS3 timing cover, timing cover bolts, gasket, and seal, a 4X camshaft sensor, harness, and bracket, camshaft bolts, a camshaft sensor bolt, balancer bolt, and water pump gaskets. TFS-30678504 Variable valve timing delete kit, 1-bolt camshafts, 2007-14 5.3L-6.2L GM LS, each TFS-30678505 Variable valve timing delete kit, 3-bolt camshafts, 2007-14 5.3L-6.2L GM LS, each GM LS TFS-30678505 TFS-90307 Click Here to Shop All GM LS Products at Valve Spring Compressors for GM LS If you work on engines, then you need a Trick Flow valve spring compressor. A must for servicing valve springs, retainers, and valve seals, our specially made tools easily remove valve springs—even while they’re on the engine and still in the vehicle. The compressors are made from premium heat-treated steel for a long service life. TFS-90306 Valve spring compressor, GM LS1/LS6/LS2, each TFS-90307 Valve spring compressor, GM L92/LS3/L99/LS9, each
