GM LS9 CAMSHAFT KIT WITH LIFTERS +60HP CHEVY LS 5.3 6.0 6.2 LM7 L59 L33 LM4 . For Sale

Upgrade your LS build with the GM LS9 Camshaft Kit, one of the most popular OEM GM performance camshafts ever produced. This cam is factory-engineered for the supercharged 6.2L LS9 engine, but it’s also one of the best drop-in upgrades for naturally aspirated 5.3L, 5.7L, and 6.0L LS builds.

Dyno testing shows this cam delivers +60 HP over a stock 5.3L camshaft, even without additional modifications. With forced induction (supercharger/turbo), it truly unlocks the LS engine’s potential. This makes it a perfect budget-friendly upgrade for enthusiasts who want real horsepower gains with OEM reliability.

Manufactured by GM Performance, this camshaft is built under strict ISO-certified quality control standards. Paired with 16 premium LS7-style hydraulic roller lifters, this kit offers OEM fitment, enhanced durability, and superior valvetrain stability.

• (1) GM LS9 Camshaft – PN 12638427

  • Factory GM Performance part

  • Drop-in compatible with most Gen III/IV LS engines

  • +60HP gain in stock 5.3L applications

  • Designed for both naturally aspirated & boosted setups

• (16) LS7 Style Hydraulic Roller Lifters

  • Premium quality design

  • Improved reliability and reduced lifter noise

  • OEM direct replacement for LS-based engines

• +60 HP Over Stock 5.3 Camshaft – Proven dyno-tested horsepower increase

• GM OEM Part – Not a cheap knock-off; real GM Performance upgrade

• Drop-In Upgrade – Works with stock heads, stock intake, and factory ECU (tune recommended for max performance)

• Supercharger/Turbo Friendly – Originally designed for the LS9, this cam shines with forced induction builds

• Improved Valve Timing – Optimized for performance while maintaining good drivability

• Premium LS7-Style Lifters – Reduce valve float, improve longevity, and provide smooth valvetrain operation

• Lifetime Warranty – When installed by a certified machinist

Designed for Chevy/GM LS Gen III & Gen IV engines, including:

• 5.3L LS (LM7, L59, L33, LM4) – Silverado, Sierra, Tahoe, Suburban, Yukon, Envoy, etc.

• 5.7L LS1 – Corvette, Camaro, Firebird, GTO

• 6.0L LS2 / LQ4 / LQ9 – Silverado HD, Sierra HD, Escalade, GTO, SSR, Trailblazer SS

• 6.2L LS3 / L92 / LS9 / LSA – Corvette, Camaro SS, CTS-V, Escalade, Silverado/Sierra 1500 & HD

(Professional tuning recommended to optimize gains. Always verify compatibility with your specific engine code before purchase.)

• Manufacturer Part Number: 12638427 (LS9 Camshaft)

• Camshaft Type: GM Performance Hydraulic Roller

• Lifters: LS7-Style Hydraulic Roller Lifters (set of 16)

• Advertised HP Gain: +60 HP in stock 5.3L applications

• Fitment: Gen III / IV LS engines – 5.3L, 5.7L, 6.0L, 6.2L

• Fitment Type: Direct Replacement / Plug & Play Performance Upgrade

• Lifetime Warranty (when installed by a certified machinist)

• 30-Day Returns – Hassle-free, prepaid return label

• No Restocking Fees – Exchanges are shipped free of charge

• U.S.-Based Support – Backed by Redline USA (Portland, OR) & Enginetech (Dallas, TX)

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