Name: TSP NSR Cam Kit
Brand: Texas Speed & Performance
SKU: TSP-NSRCamKit

TSP LS Truck NSR Camshaft Kit – No Valve Springs Required

The Texas Speed & Performance LS Truck NSR Camshaft Kit provides the essential components needed to install one of our factory-spring-compatible truck camshafts. With camshaft options designed specifically for 4.8L, 5.3L, and 6.0L cathedral-port LS engines, this package makes it easy to select the right combination for your engine and intended use.

Choose between a torque-focused NSR RV Camshaft and an aggressive-sounding NSR CHOPacabra Camshaft. All available camshafts feature .495" intake and exhaust lift and are designed for use with compatible factory GM valve springs.

Kit Includes

Your choice of TSP NSR camshaft
Front cover gasket kit
Crankshaft balancer bolt
Valve cover gaskets
Camshaft retainer plate
ARP camshaft bolts

Available Camshaft Options

TSP NSR RV Camshaft – 4.8L & 5.3L

The TSP NSR RV Camshaft for 4.8L and 5.3L engines is our modern take on the classic small-block RV cam. It emphasizes low-end and midrange torque for towing, off-road use, daily driving, and other applications where usable power and drivability are the priorities.

Duration at .050": 208°/216°
Valve Lift: .495"/.495"
LSA: 110°
ICL: 107°
Powerband: Low-end to midrange torque
Estimated Power Gain: Up to 40 horsepower
Idle Quality: Smooth, mild idle
Torque Converter: Factory-converter friendly

TSP NSR CHOPacabra Camshaft – 4.8L & 5.3L

The TSP NSR CHOPacabra Camshaft for 4.8L and 5.3L engines is designed for customers who want an aggressive, choppy idle without giving up factory-spring and factory-converter compatibility. It delivers strong performance along with the mean, unmistakable exhaust note that made the CHOPacabra one of our most popular truck camshafts.

Duration at .050": 214°/222°
Valve Lift: .495"/.495"
LSA: 108°
ICL: 106°
Recommended Compression Ratio: 9.5:1 or higher
Operating Range: 1,200–6,500 RPM
Tested Power Gain: More than 60 horsepower
Idle Quality: Aggressive, choppy idle
Torque Converter: Factory-converter friendly
Rear Gear Upgrade: Not required

TSP NSR RV Camshaft – 6.0L

The TSP 6.0L NSR RV Camshaft is designed specifically to improve the low-end torque and midrange power of cathedral-port 6.0L LS engines. It is an excellent choice for towing, cruising, off-road use, and street-driven trucks that need stronger performance without sacrificing drivability.

Duration at .050": 212°/220°
Valve Lift: .495"/.495"
LSA: 110°
ICL: 107°
Powerband: Low-end torque with strong midrange power
Estimated Power Gain: 30–50 horsepower
Idle Quality: Smooth, mild idle
Torque Converter: Factory-converter friendly

TSP NSR CHOPacabra Camshaft – 6.0L

The TSP 6.0L NSR CHOPacabra Camshaft brings the legendary CHOPacabra sound to cathedral-port 6.0L LS engines. With increased duration and aggressive overlap, this camshaft delivers a rowdy, choppy idle while retaining compatibility with factory valve springs, pushrods, and torque converters in properly configured applications.

Duration at .050": 220°/228°
Valve Lift: .495"/.495"
LSA: 108°
ICL: 106°
Estimated Power Gain: 50–70+ horsepower, depending on the combination
Idle Quality: Aggressive, choppy idle
Torque Converter: Factory-converter friendly

Camshaft Selection Guide

4.8L/5.3L NSR RV: Best for low-end torque, towing, off-road use, daily driving, and customers wanting a smooth idle.
4.8L/5.3L NSR CHOPacabra: Best for customers wanting stronger performance and an aggressive, choppy idle from a smaller-displacement LS truck engine.
6.0L NSR RV: Best for cathedral-port 6.0L engines where low-end torque, midrange power, towing performance, and drivability are the priorities.
6.0L NSR CHOPacabra: Best for cathedral-port 6.0L engines where maximum chop and stronger performance are the main goals.

Optional Trunnion Upgrade

An optional rocker arm trunnion upgrade kit is available when configuring the package. This upgrade strengthens the factory rocker arms and is recommended for customers who want to improve the durability of the factory rocker system while the valvetrain is apart.

No Valve Spring Upgrade Required

All available NSR camshafts are designed to operate with compatible factory GM valve springs, eliminating the need for a valve spring upgrade in a properly maintained engine. This reduces installation time and makes the package an economical option for mild truck builds and daily-driven applications.

The existing valve springs must still be inspected for wear, damage, proper installed height, and adequate spring pressure before reuse. Old, weak, damaged, or high-mileage springs should be replaced before the engine is operated with the new camshaft.

Important Notes

Select the camshaft designed for your engine displacement and intended use.
The 6.0L camshaft options are intended for compatible cathedral-port 6.0L LS applications.
These camshafts are designed for use with compatible factory GM valve springs.
Factory valve springs must be inspected and verified to be in good operating condition before reuse.
The rocker arm trunnion upgrade kit is optional and is not included unless selected.
Camshaft tuning is required and will vary by vehicle and engine combination.
Piston-to-valve clearance and all other critical valvetrain clearances should be checked before final assembly.
Horsepower gains will vary based on engine combination, supporting modifications, exhaust, intake, tuning, and test conditions.
Professional installation and tuning are recommended.

Need help choosing between maximum low-end torque and an aggressive choppy idle? Contact the Texas Speed & Performance sales team for assistance selecting the correct NSR camshaft for your engine.