Brian Tooley BTR LS3 Stage 3 Camshaft Install Kit w/ GM 12499225 Lifters, LS9 Head Gaskets, Bolts | +70HP | 227/24X .636/.636 111.5 LSA | Fits Chevy LS3 6.2L L99 L76 L77 Camaro Corvette – MADE IN USA

Description

The Brian Tooley Racing LS3 Stage 3 is the most aggressive cam in BTR’s LS3 lineup — and this kit gives you everything needed to install it right, with every single component proudly made in the United States. The LS3 Stage 3 was purpose-built for builders who want the absolute maximum naturally aspirated power from a stock displacement 6.2L LS3 engine. With dyno-proven gains of 70+ rear wheel horsepower, a .636″/.636″ valve lift, and a 111.5° LSA that pushes the powerband into the mid to upper RPM range, this cam transforms a Camaro SS, Corvette C6, or G8 GXP into a completely different animal. The aggressive idle announces from the first startup that something serious lives under the hood — and the power that follows backs it up every single time you drive it.

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 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 2010–2015 Chevrolet Camaro SS, 2005–2013 Corvette C6, and 2009 Pontiac G8 GXP equipped with the 6.2L LS3 engine. A professional tune is required for both automatic and manual applications. A 3,500+ RPM stall converter is recommended for automatic 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 this serious 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 premium full upper head gasket set features LS9 7-layer style 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 2010–2015 Chevrolet Camaro SS, 2005–2013 Corvette C6, and 2009 Pontiac G8 GXP equipped with the 6.2L LS3 engine. A professional tune is required for both automatic and manual applications. A 3,200+ RPM stall converter is recommended for automatic 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 this serious deserves nothing less. Big power. Broad powerband. Built for the street.

• 100% USA MADE COMPLETE BTR LS3 STAGE 3 CAM KIT – Every single part in this kit is manufactured in the United States. Includes: Brian Tooley Racing LS3 Stage 3 Camshaft (227/24X, .636″/.636″, 111.5 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.
• DYNO PROVEN +70HP – MAXIMUM LS3 NATURALLY ASPIRATED POWER – The BTR LS3 Stage 3 delivers dyno-proven gains of 70+ rear wheel horsepower on the 6.2L LS3 platform. With .636″/.636″ valve lift and a 111.5° LSA pushing the powerband into the mid to upper RPM range, this is the cam for builders who want every last horsepower their stock displacement 6.2L LS3 can give up.
• VERIFIED FITMENT – Built specifically for 6.2L LS3 engines. Fits 2010–2015 Chevrolet Camaro SS, 2005–2013 Chevrolet Corvette C6 LS3, and 2009 Pontiac G8 GXP. LS9 7-layer style MLS head gaskets are precision matched to the rectangle port cylinder heads found on LS3 engines.
• 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. When you are building a serious LS3 engine, the lifters matter as much as the cam. We don’t cut corners on the parts that keep your valvetrain alive.
• USA-MADE ELGIN OR FEL-PRO HEAD BOLTS + LS9 7-LAYER MLS HEAD GASKETS – Elgin and Fel-Pro are two of the most trusted American engine component manufacturers in the industry, delivering the clamping force a performance build demands. The premium full 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.