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

Name: BTR-400+NA Hydraulic Roller Camshaft for GM Gen III/IV LS 402–427 ci Engines
Brand: BRIAN TOOLEY RACING BTR
SKU: 559-BTR-400+NA
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: 236 Int./25X Ex.

Lift .636 in./.636 in.

LSA 114 deg

Operating Range: 3500–7000 RPM

Naturally Aspirated Applications

Designed for large displacement 402–427 ci LS engines, the BTR-400+NA camshaft provides strong mid-range torque and excellent top-end power while maintaining street-friendly manners.

Brian Tooley Racing BTR-400+NA Features:

Duration @ .050: 236 Int. / 25X Ex.
Valve Lift: .636 in. Int. / .636 in. Ex.
LSA: 114 deg
Operating Range: 3500–7000 RPM
Optimized for 402–427 ci naturally aspirated LS engines

Brian Tooley Racing BTR-400+NA Notes:

Requires .660 in. dual valve springs and hardened pushrods
1.7 rocker ratio recommended

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.

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Part TypeCamshaft

BrandBRIAN TOOLEY RACING BTR

Package Height3.0

Package Width3.0

Package Length25.0

Weight15.0 PG

Part CategoryPerformance Parts

Intake Valve Lift.636

Lobe Separation Deg114

Part FitmentSemi Universal

Engine Make/SizeGM Gen III/IV LS