Brian Tooley BTR LS3 Stage 4 V2 Camshaft Install Kit w/ GM 12499225 Lifters, LS9 Head Gaskets, Bolts | 500++ WHP | 233/24X .636/.636 111 LSA | Fits GM 6.0L 6.2L LS3 L99 L76 L77 – MADE IN USA

Description

The Brian Tooley Racing LS3 Stage 4 V2 is BTR’s most aggressive naturally aspirated LS3 camshaft — and this kit gives you everything needed to install it right, with every single component proudly made in the United States. The Stage 4 V2 was purpose-built for builders chasing 500+ wheel horsepower from a stock displacement 6.2L LS3 with proper bolt-on supporting modifications, all while retaining the reliability and durability that BTR is known for. With a 233°/24X° duration profile, .636″/.636″ valve lift, a 111° LSA, and a 3,500–7,000 RPM operating range, this cam delivers strong top end power that keeps climbing all the way to redline. The 6.2L LS3 is one of the most popular and capable engines in the entire GM lineup — beloved by the LS swap community and performance builders alike for its power potential, lightweight aluminum block, and incredible aftermarket support — and the Stage 4 V2 takes it as far as a naturally aspirated stock displacement engine can go.

What sets this kit apart is the uncompromising quality of every USA-made supporting component. The genuine GM Performance 12499225 hydraulic roller lifters are manufactured right here in the United States — not generic offshore substitutes. These are the same lifters trusted in OEM performance applications, chosen by professional engine builders who refuse to cut corners on the parts that keep a valvetrain alive under a max effort cam. The head bolts are made by Elgin Industries or Fel-Pro — two of the most trusted American engine component manufacturers in the industry — delivering the clamping force your build demands for a proper, lasting seal. The premium upper head gasket set features LS9 MLS head gaskets, the gold standard for sealing high-performance LS3 builds under sustained cylinder pressure — and every single part is made right here in the USA.

This kit is built specifically for 6.2L LS3-based engines. Stock torque converters work perfectly fine in the 5th Gen Camaro SS, Corvette C6, and Pontiac G8 GT/GXP with this cam — making it one of the most accessible max effort LS3 grinds available. A professional tune is required for both automatic and manual applications. Measuring piston-to-valve clearance prior to installation is always recommended. Every part in this kit is proudly made in the USA — because a build chasing 500+ wheel horsepower deserves nothing less. Big power. Broad powerband. Built for the street.

What sets this kit apart is the uncompromising quality of every USA-made supporting component. The genuine GM Performance 12499225 hydraulic roller lifters are manufactured right here in the United States — not generic offshore substitutes. These are the same lifters trusted in OEM performance applications, chosen by professional engine builders who refuse to cut corners on the parts that keep a valvetrain alive under a performance cam. The head bolts are made by Elgin Industries or Fel-Pro — two of the most trusted American engine component manufacturers in the industry — delivering the clamping force your build demands for a proper, lasting seal. The full upper MLS head gasket set is precision matched to the rectangle port cylinder heads found on 2007+ 6.0L and 6.2L LS engines, providing superior crush resistance and long-term sealing reliability that composite gaskets simply cannot match.

This kit is built specifically for 2007–2013 GM 6.0L and 6.2L rectangle port Vortec LS engines. A professional tune is required for both automatic and manual applications. This cam works well with stock torque converters making it an ideal daily driver upgrade. Measuring piston-to-valve clearance prior to installation is always recommended. Every part in this kit is proudly made in the USA — because your build deserves nothing less. Big power. Broad powerband. Built for the street.

• 100% USA MADE COMPLETE BTR LS3 STAGE 4 V2 CAM KIT – Every single part in this kit is manufactured in the United States. Includes: Brian Tooley Racing LS3 Stage 4 V2 Camshaft (233/24X, .636″/.636″, 111 LSA, 3-Bolt, Made in USA), 16 Genuine GM Performance 12499225 Hydraulic Roller Lifters (Made in USA), 2 Sets of USA-Made Elgin or Fel-Pro Head Bolts, and a Premium Upper Head Gasket Set with LS9 7-Layer Style MLS Head Gaskets (Made in USA). One order, one shipment, zero compromises.
• 500+ WHEEL HORSEPOWER POTENTIAL – MAX EFFORT LS3 GRIND – The BTR LS3 Stage 4 V2 is purpose-built to push a stock displacement 6.2L LS3 to 500+ wheel horsepower with proper bolt-on supporting modifications while retaining long-term durability. A 3,500–7,000 RPM operating range delivers strong top end power that keeps climbing all the way to redline — this is the cam for builders who want everything their LS3 has to give.
• VERIFIED FITMENT – Built specifically for 6.2L LS3-based engines. Stock torque converters work perfectly fine in the 5th Gen Camaro SS, Corvette C6, and Pontiac G8 GT/GXP with this cam. Also fits LS swap builds running the 6.2L LS3. LS9 7-layer style MLS head gaskets precision matched to rectangle port cylinder heads. Please verify bolt pattern configuration prior to installation.
• GENUINE GM/ACD PERFORMANCE 12499225 ROLLER LIFTERS – MADE IN THE USA – Not generic offshore substitutes. These are the real GM/ACD Performance part number 12499225 hydraulic roller lifters, manufactured right here in the United States — the same trusted lifters used in OEM performance applications. A max effort cam like the LS3 Stage 4 V2 demands lifters built to survive it. We don’t cut corners on the parts that keep your valvetrain alive.
• USA-MADE ELGIN OR FEL-PRO HEAD BOLTS + LS9 HEAD GASKETS – Elgin and Fel-Pro are two of the most trusted American engine component manufacturers in the industry, delivering the clamping force a 500+ whp build demands. The premium upper head gasket set features LS9 MLS head gaskets — superior crush resistance, better sealing under high cylinder pressure, and long-term reliability that composite gaskets simply cannot match. Proudly made in the USA.