BTR-400+NITROUS Hydraulic Roller Camshaft for GM Gen III/IV LS 402–427 ci Engines

Name: BTR-400+NITROUS Hydraulic Roller Camshaft for GM Gen III/IV LS 402–427 ci Engines
Brand: BRIAN TOOLEY RACING BTR
SKU: 559-J000045
Price: 409.99 USD
Availability: InStock

^$409⁹⁹

Ships on 09/15/2026

Lowest Price Guarantee

Gen III/IV LS 402–427 ci Hydraulic Roller Camshaft

Duration @ .050: 247 Int./27X Ex.

Lift .618 in./.618 in.

LSA 112 deg

Optimized for Nitrous and Boosted Builds

The BTR-400+NITROUS camshaft is designed for 402–427 ci LS engines using nitrous or mild boost, offering exceptional power and durability across the rev range.

Brian Tooley Racing BTR-400+NITROUS Features:

Duration @ .050: 247 Int. / 27X Ex.
Valve Lift: .618 in. Int. / .618 in. Ex.
LSA: 112 deg
Specifically tuned for nitrous-assisted 400+ ci engines
Broad torque curve for strong acceleration and top-end power

Brian Tooley Racing BTR-400+NITROUS Notes:

Requires upgraded valve springs and pushrods
AFM/DOD delete and ECU tuning required on equipped engines

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART

Unlock Maximum LS Power with BTR Camshafts for GM Gen III/IV LS Engines

Brian Tooley Racing (BTR) offers high-performance camshaft solutions tailored for Gen III/IV GM LS platforms, perfect for Silverado/Sierra trucks and LS‑swapped muscle cars. With aggressive grind profiles, durable design, and dyno-proven power gains, these camshafts deliver torque and horsepower increases across the RPM range.BTR's Gen III/IV cam lineup includes the signature Truck Norris, Stage 1, Stage 2, Stage 3, LS1/LS2 Stage 3, LS3 Stage 4, and turbo‑optimized variants like Stage 1 Turbo and Twin Turbo V2. Each cam is CNC-ground from proprietary cores, heat-treated for lasting reliability, and spin- and dyno-tested for peak performance and stability.

Part TypeCamshaft

Product LineBrian Tooley Racing BTR Camshafts for GM Gen III/IV LS Engines

BrandBRIAN TOOLEY RACING BTR

Package Height3.0

Package Width3.0

Package Length25.0

Weight15.0 PG

Part CategoryPerformance Parts

Intake Valve Lift.618

Lobe Separation Deg112

Part FitmentSemi Universal

Engine Make/SizeGM Gen III/IV LS