BTR Truck Norris Camshaft Kit for Gen 3/4 LS Trucks - Strong Low-End

In this review of the BTR Truck Norris Camshaft Kit, the bottom line is simple: this kit is built for owners of 1999-2013 GM Gen 3/4 LS truck and SUV engines who want a noticeable gain in real-world torque and a deeper idle note without needing an aggressive tune. Tested in-house by BTR with dyno and Spintron work, the cam delivers broader power across the curve compared with earlier BTR truck cams, and the kit includes springs, seals and pushrods to simplify installation for properly prepared engines.

Key Features

• Cam profile: 212/22X grind delivers increased low- and mid-range torque that helps with towing and daily driving.
• Lift specification:.552in/.552in lifts give a strong valve motion that contributes to the cam's throaty sound and improved breathing.
• Timing: 107 LSA keeps the idle reasonable while spreading power through the RPM band for usable performance.
• Complete kit: Includes springs, seals and pushrods so installers get the components needed for a correct assembly without sourcing multiple parts.
• Compatibility notes: Designed for 1999-2013 Gen3/4 LS 4.8, 5.3, 5.7, 6.0 and 6.2 engines and works with stock torque converters in most setups.

Who It's For

The Truck Norris is ideal for truck and SUV owners running Gen 3/4 LS V8s who want stronger real-world performance during towing, hauling or spirited street driving; the cam was developed specifically from extensive dyno testing to improve torque everywhere in the curve. Enthusiasts who value a deeper, throaty idle and want a cam that behaves well with stock torque converters will likely appreciate this kit.

It is not the best choice for engines with active Variable Valve Timing unless a VVT delete kit is fitted, and engines originally using a 1-bolt cam will require a 3-bolt conversion to install this camshaft. Buyers seeking only mild bolt-on gains or who cannot modify timing system components should explore other, milder options.

Pros & Cons

Pros

• Noticeable increase in low- and mid-range torque for better drivability and towing.
• Includes springs, seals and pushrods so the kit is more complete for an install.
• Well-developed profile from dyno and Spintron testing for predictable power delivery.
• Idle sound is deeper and more aggressive without being excessively rough for daily use.

Cons

• VVT engines require a VVT delete kit, adding cost and complexity for some installations.
• Engines with a 1-bolt cam need a 3-bolt conversion kit before installation.

Specifications

Product	BTR Truck Norris Camshaft Kit with springs, seals, pushrods
Engine fitment	GM Gen 3/4 LS truck engines 1999-2013 (4.8, 5.3, 5.7, 6.0, 6.2)
Cam grind	212/22X
Lift	.552in/.552in
LSA	107
Camshaft bolt pattern	3 bolt pattern

Our Verdict

The BTR Truck Norris Camshaft Kit is a solid upgrade for Gen 3/4 LS truck owners who want stronger low- and mid-range torque and a deeper idle without radical drivability loss. Because it comes with springs, seals and pushrods and reflects extensive in-house testing, it represents good value for builders prepared to address VVT or cam bolt pattern requirements.

Frequently Asked Questions

Will this work on VVT equipped engines?
VVT engines require a VVT delete kit to install this camshaft.

Can I install this if my engine has a 1-bolt cam?
No, engines originally equipped with a 1-bolt cam need a 3-bolt conversion kit to fit this cam.

Does the kit include all needed hardware?
The kit includes springs, seals and pushrods, but check conversion and VVT requirements for your specific engine before purchase.