Valve Train

Sportsman Stainless Exhaust Valve for GM LS w/ 1.570" Head, 4.930" LengthInstallation InstructionsInstallation InstructionsC.A.R.B. E.O. NumberN/AC.A.R.B. Exempt for California Certified Vehicles Manufactured Before 1965?Yes, but must meet tailpipe...

Sportsman Stainless Intake Valve for GM LS w/ 2.080" Head, 4.900" LengthInstallation InstructionsInstallation InstructionsC.A.R.B. E.O. NumberN/AC.A.R.B. Exempt for California Certified Vehicles Manufactured Before 1965?Yes, but must meet tailpipe...

Sportsman Stainless Intake Valve for GM LS w/ 2.055" Head, 4.900" LengthInstallation InstructionsInstallation InstructionsC.A.R.B. E.O. NumberN/AC.A.R.B. Exempt for California Certified Vehicles Manufactured Before 1965?Yes, but must meet tailpipe...

Sportsman Stainless Intake Valve for GM LS w/ 2.020" Head, 4.900" LengthInstallation InstructionsC.A.R.B. E.O. NumberN/AC.A.R.B. Exempt for California Certified Vehicles Manufactured Before 1965?Yes, but must meet tailpipe emission standards for year of...

Bronze Thrust Plate for RHS LS BlockInstallation Instructions

Included in our 5460 cam phaser limiter kit for '09+ GEN IV LS and '14+ LT1, this cam phaser plug limits the movement of your variable timing camshaft to 22 degrees.Installation InstructionsC.A.R.B. E.O. NumberN/AC.A.R.B. Exempt for California Certified...

This bolt is 1.50" long with M16 diameter for GM L92 camshafts. This bolt is designed to prevent breakage, rated at 170,000 psi.Installation InstructionsInstallation InstructionsC.A.R.B. E.O. NumberN/AC.A.R.B. Exempt for California Certified Vehicles...

Including our 5454 spring compressor, 5455 spring lock tool and the 5457 cam phaser limiter plug, this kit has everything that you need to limit the cam timing of your '07-'08 GEN IV and '14+ LT1 to 22 degrees.Installation InstructionsInstallation...

Pushrod, Spring, Retainer and Lifter Kit for GM LSInstallation Instructions

Pushrod, Spring and Retainer Kit for GM LSInstallation Instructions

Our thrust plate kit for GM LS engines features a bronze plate complete with o-rings and 4 bolts for a complete installation.Installation InstructionsInstallation InstructionsC.A.R.B. E.O. NumberN/AC.A.R.B. Exempt for California Certified Vehicles...

The best possible drop-in cam for a budget 5.3L Drift / Road Race / Drag build with Spintron-proven 7500 RPM+ stability. It is a good idea to replace the timing chain.Installation InstructionsInstallation InstructionsAdvertised Exhaust...

Perfect choice for upgraded 5.3L engines, larger displacement, or lager blower applications - 7400 RPM stability with packageAdvertised Exhaust Duration302Advertised Intake Duration291ApplicationsFits all 3-Bolt GM LS engines, but designed to perform...

Perfect choice for 5.3L "cam only" and mildly modified blower engines. Low Shock profiles allow 7200 RPM stability with packageAdvertised Exhaust Duration294Advertised Intake Duration283ApplicationsFits all 3-Bolt GM LS engines, but designed to perform...

First 50-state legal grind for the GM Gen III LS1/LS3 three-bolt family of engines. Drop-in with stock components and tune can produce 30 to 90 HP increase in peakInstallation InstructionsInstallation InstructionsAdvertised Exhaust Duration270Advertised...