The Texas Speed 4.8L/5.3L NSR RV Camshaft is a modern take on the classic small block RV cam, designed specifically for 4.8L and 5.3L LS truck engines. The goal is maximum low-end torque for towing, off-road use and daily driving, with no loss of reliability. Because it belongs to the Texas Speed NSR (No Springs Required) family, it runs on the factory LS valve springs and stock pushrods, which keeps the install simple and the cost down.
The grind measures 208/216 duration at .050", .495" lift and a 110 degree lobe separation angle with a 107 degree intake centerline (110 plus 3). Texas Speed estimates a gain of up to 40 horsepower with a powerband concentrated in low-end and mid-range torque. The mild overlap gives a smooth idle, and the cam works with the factory 4L60E or 4L80E torque converter, so no stall converter is needed. A custom tune is required after installation.
Specifications
- Duration at .050": 208/216
- Valve lift: .495"/.495"
- Lobe separation angle: 110 degrees
- Intake centerline: 107 degrees (110 + 3)
- Engines: 4.8L and 5.3L LS truck engines
- Valve springs: No upgrade required, designed for stock LS valve springs
- Pushrods: Stock pushrods retained
- Torque converter: Works with the factory 4L60E or 4L80E converter
- Powerband: Low-end to mid-range torque
- Estimated gain: Up to +40 hp
- Idle: Mild overlap, smooth idle
- Intended use: Towing, off-road and daily driving
- Vehicle usage: Daily driver / friendly
- Chop level: Mild chop
Vehicle Applications
Engine application per Texas Speed: 4.8L and 5.3L Gen III and Gen IV LS truck engines. The vehicle list published by Texas Speed for this part number has been narrowed to remove 3500-series trucks, which were not sold with a 4.8L or 5.3L; several remaining models were also offered with a 6.0L, so confirm your engine before ordering.
Chevrolet Colorado
- 2009 Chevrolet Colorado
- 2010 Chevrolet Colorado
- 2011 Chevrolet Colorado
- 2012 Chevrolet Colorado
Cadillac Escalade
- 2002 Cadillac Escalade
- 2003 Cadillac Escalade
- 2004 Cadillac Escalade
- 2005 Cadillac Escalade
Pontiac Grand Prix
- 2005 Pontiac Grand Prix
- 2006 Pontiac Grand Prix
- 2007 Pontiac Grand Prix
- 2008 Pontiac Grand Prix
Chevrolet Impala SS
- 2006 Chevrolet Impala SS
- 2007 Chevrolet Impala SS
- 2008 Chevrolet Impala SS
- 2009 Chevrolet Impala SS
Chevrolet Monte Carlo
- 2006 Chevrolet Monte Carlo
- 2007 Chevrolet Monte Carlo
GMC Sierra 1500
- 1999 GMC Sierra 1500
- 2000 GMC Sierra 1500
- 2001 GMC Sierra 1500
- 2002 GMC Sierra 1500
- 2003 GMC Sierra 1500
- 2004 GMC Sierra 1500
- 2005 GMC Sierra 1500
- 2006 GMC Sierra 1500
- 2007 GMC Sierra 1500
- 2008 GMC Sierra 1500
- 2009 GMC Sierra 1500
- 2010 GMC Sierra 1500
- 2011 GMC Sierra 1500
- 2012 GMC Sierra 1500
- 2013 GMC Sierra 1500
GMC Sierra 2500
- 2001 GMC Sierra 2500
- 2002 GMC Sierra 2500
- 2003 GMC Sierra 2500
- 2004 GMC Sierra 2500
- 2005 GMC Sierra 2500
- 2006 GMC Sierra 2500
- 2007 GMC Sierra 2500
Chevrolet Silverado 1500
- 1999 Chevrolet Silverado 1500
- 2000 Chevrolet Silverado 1500
- 2001 Chevrolet Silverado 1500
- 2002 Chevrolet Silverado 1500
- 2003 Chevrolet Silverado 1500
- 2004 Chevrolet Silverado 1500
- 2005 Chevrolet Silverado 1500
- 2006 Chevrolet Silverado 1500
- 2007 Chevrolet Silverado 1500
- 2008 Chevrolet Silverado 1500
- 2009 Chevrolet Silverado 1500
- 2010 Chevrolet Silverado 1500
- 2011 Chevrolet Silverado 1500
- 2012 Chevrolet Silverado 1500
- 2013 Chevrolet Silverado 1500
Chevrolet Silverado 2500
- 1999 Chevrolet Silverado 2500
- 2000 Chevrolet Silverado 2500
- 2001 Chevrolet Silverado 2500
- 2002 Chevrolet Silverado 2500
- 2003 Chevrolet Silverado 2500
- 2004 Chevrolet Silverado 2500
- 2005 Chevrolet Silverado 2500
- 2006 Chevrolet Silverado 2500
- 2007 Chevrolet Silverado 2500
Chevrolet Suburban
- 2000 Chevrolet Suburban
- 2001 Chevrolet Suburban
- 2002 Chevrolet Suburban
- 2003 Chevrolet Suburban
- 2004 Chevrolet Suburban
- 2005 Chevrolet Suburban
- 2006 Chevrolet Suburban
- 2007 Chevrolet Suburban
- 2008 Chevrolet Suburban
- 2009 Chevrolet Suburban
- 2010 Chevrolet Suburban
- 2011 Chevrolet Suburban
- 2012 Chevrolet Suburban
- 2013 Chevrolet Suburban
- 2014 Chevrolet Suburban
Chevrolet Tahoe
- 2000 Chevrolet Tahoe
- 2001 Chevrolet Tahoe
- 2002 Chevrolet Tahoe
- 2003 Chevrolet Tahoe
- 2004 Chevrolet Tahoe
- 2005 Chevrolet Tahoe
- 2006 Chevrolet Tahoe
- 2007 Chevrolet Tahoe
- 2008 Chevrolet Tahoe
- 2009 Chevrolet Tahoe
- 2010 Chevrolet Tahoe
- 2011 Chevrolet Tahoe
- 2012 Chevrolet Tahoe
- 2013 Chevrolet Tahoe
- 2014 Chevrolet Tahoe
GMC Yukon
- 1999 GMC Yukon
- 2000 GMC Yukon
- 2001 GMC Yukon
- 2002 GMC Yukon
- 2003 GMC Yukon
- 2004 GMC Yukon
- 2005 GMC Yukon
- 2006 GMC Yukon
- 2007 GMC Yukon
- 2008 GMC Yukon
- 2009 GMC Yukon
- 2010 GMC Yukon
- 2011 GMC Yukon
- 2012 GMC Yukon
- 2013 GMC Yukon
- 2014 GMC Yukon
Vehicle applications reflect the fitment published by Texas Speed & Performance for this part number. Confirm your engine and cylinder head configuration before ordering.
FAQ
What engines does the Texas Speed NSR RV cam fit?
Texas Speed designed the TSP-NSR-RV-5.3 specifically for 4.8L and 5.3L LS truck engines, such as those in 1999 to 2013 Silverado and Sierra 1500 and 2000 to 2014 Tahoe, Suburban and Yukon. Texas Speed sells a separate 6.0L version (TSP-NSR-RV-6.0).
Do I need new valve springs or pushrods with the NSR RV camshaft?
No. NSR stands for No Springs Required. Texas Speed designed this cam to work with the stock LS valve springs and stock pushrods, so no valvetrain upgrades are needed.
Will the NSR RV cam work with my factory torque converter?
Yes. Texas Speed states the cam retains the stock converter and works with the factory 4L60E or 4L80E transmission, so no stall converter is required.
Is the NSR RV cam good for towing?
Yes. The 208/216 grind is built for low-end and mid-range torque, which Texas Speed says puts the gain right where a truck pulling a trailer uses it most, with a smooth, daily-driver-friendly idle.
How much power does the 4.8L/5.3L NSR RV cam add?
Texas Speed estimates a gain of up to 40 horsepower on a 4.8L or 5.3L LS truck engine, with the biggest improvement in low-end torque. Results vary with intake, exhaust and tuning.
Is a tune required after installing the NSR RV camshaft?
Yes. A custom tune is required after any camshaft swap so the engine idles and runs correctly with the new profile.
