The Texas Speed 233/239 Camshaft is a popular choice for 5.7L and 6.0L LS owners who want a very streetable camshaft that steps past the Torquer V2, making approximately 5 to 7 more horsepower than that grind. Texas Speed's dyno testing shows a solid 50 to 55 rear-wheel horsepower gain, and the cam can be daily driven once properly tuned.
The cam measures 233/239 duration at .050", .600"/.600" lift and a 112 degree lobe separation angle across a 2,000 to 7,000 rpm operating range, with a very aggressive idle. Texas Speed recommends a 10.1:1 or higher compression ratio and PAC 1219x or TSP .660" dual valve springs. A 3,200 rpm or higher stall converter is recommended in automatic cars along with a 3.23 or deeper rear gear for optimal performance. The cam fits stock untouched heads with no piston-to-valve clearance issues, though measuring is always recommended. Tuning is required in both automatic and manual applications.
Specifications
- Duration at .050": 233/239
- Valve lift: .600"/.600"
- Lobe separation angle: 112 degrees
- Engines best suited for: 5.7L and 6.0L LS
- Desired compression ratio: 10.1:1 or higher
- Recommended valve springs: PAC 1219x or TSP .660" dual valve springs (upgraded springs required)
- Aftermarket stall converter required: Yes, 3,200+ rpm
- Upgraded rear gear: 3.23 or higher for optimal performance
- Operating range: 2,000 to 7,000 rpm
- Estimated power increase: 50 to 55+ rwhp
- Fits stock untouched heads: Yes, no piston-to-valve clearance issues (measuring recommended)
- Drivability per Texas Speed: Very streetable, can be daily driven once properly tuned
- Vehicle usage: Street performance, mid-range
- Chop level: Very aggressive
Vehicle Applications
Engine families covered per Texas Speed: best suited for 5.7L and 6.0L Gen III and Gen IV LS. Vehicle list reflects Texas Speed's published fitment, which also includes 4.8L and 5.3L platforms; confirm your engine and cylinder head configuration.
Chevrolet Camaro
- 1998 Chevrolet Camaro
- 1999 Chevrolet Camaro
- 2000 Chevrolet Camaro
- 2001 Chevrolet Camaro
- 2002 Chevrolet Camaro
Chevrolet Corvette
- 1997 Chevrolet Corvette
- 1998 Chevrolet Corvette
- 1999 Chevrolet Corvette
- 2000 Chevrolet Corvette
- 2001 Chevrolet Corvette
- 2002 Chevrolet Corvette
- 2003 Chevrolet Corvette
- 2004 Chevrolet Corvette
- 2005 Chevrolet Corvette
- 2006 Chevrolet Corvette
- 2007 Chevrolet Corvette
Cadillac CTS-V
- 2004 Cadillac CTS-V
- 2005 Cadillac CTS-V
- 2006 Cadillac CTS-V
- 2007 Cadillac CTS-V
- 2009 Cadillac CTS-V
- 2010 Cadillac CTS-V
- 2011 Cadillac CTS-V
- 2012 Cadillac CTS-V
- 2013 Cadillac CTS-V
- 2014 Cadillac CTS-V
- 2015 Cadillac CTS-V
Cadillac Escalade
- 2002 Cadillac Escalade
- 2003 Cadillac Escalade
- 2004 Cadillac Escalade
- 2005 Cadillac Escalade
- 2006 Cadillac Escalade
- 2008 Cadillac Escalade
- 2009 Cadillac Escalade
- 2010 Cadillac Escalade
- 2011 Cadillac Escalade
- 2012 Cadillac Escalade
- 2013 Cadillac Escalade
- 2014 Cadillac Escalade
Pontiac Firebird
- 1998 Pontiac Firebird
- 1999 Pontiac Firebird
- 2000 Pontiac Firebird
- 2001 Pontiac Firebird
- 2002 Pontiac Firebird
Pontiac Firebird Formula
- 1998 Pontiac Firebird Formula
- 1999 Pontiac Firebird Formula
- 2000 Pontiac Firebird Formula
- 2001 Pontiac Firebird Formula
- 2002 Pontiac Firebird Formula
Pontiac G8
- 2008 Pontiac G8
- 2009 Pontiac G8
Pontiac GTO
- 2004 Pontiac GTO
- 2005 Pontiac GTO
- 2006 Pontiac GTO
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
- 2009 GMC Sierra 2500
- 2010 GMC Sierra 2500
- 2011 GMC Sierra 2500
- 2012 GMC Sierra 2500
- 2013 GMC Sierra 2500
- 2014 GMC Sierra 2500
- 2015 GMC Sierra 2500
- 2016 GMC Sierra 2500
- 2017 GMC Sierra 2500
- 2018 GMC Sierra 2500
- 2019 GMC Sierra 2500
GMC Sierra 3500
- 2001 GMC Sierra 3500
- 2002 GMC Sierra 3500
- 2003 GMC Sierra 3500
- 2004 GMC Sierra 3500
- 2005 GMC Sierra 3500
- 2006 GMC Sierra 3500
- 2009 GMC Sierra 3500
- 2010 GMC Sierra 3500
- 2011 GMC Sierra 3500
- 2012 GMC Sierra 3500
- 2013 GMC Sierra 3500
- 2014 GMC Sierra 3500
- 2015 GMC Sierra 3500
- 2016 GMC Sierra 3500
- 2017 GMC Sierra 3500
- 2018 GMC Sierra 3500
- 2019 GMC Sierra 3500
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
- 2008 Chevrolet Silverado 2500
- 2009 Chevrolet Silverado 2500
- 2010 Chevrolet Silverado 2500
- 2011 Chevrolet Silverado 2500
- 2012 Chevrolet Silverado 2500
- 2013 Chevrolet Silverado 2500
- 2014 Chevrolet Silverado 2500
- 2015 Chevrolet Silverado 2500
- 2016 Chevrolet Silverado 2500
- 2017 Chevrolet Silverado 2500
- 2018 Chevrolet Silverado 2500
- 2019 Chevrolet Silverado 2500
Chevrolet Silverado 3500
- 2001 Chevrolet Silverado 3500
- 2002 Chevrolet Silverado 3500
- 2003 Chevrolet Silverado 3500
- 2004 Chevrolet Silverado 3500
- 2005 Chevrolet Silverado 3500
- 2006 Chevrolet Silverado 3500
- 2007 Chevrolet Silverado 3500
- 2008 Chevrolet Silverado 3500
- 2009 Chevrolet Silverado 3500
- 2010 Chevrolet Silverado 3500
- 2011 Chevrolet Silverado 3500
- 2012 Chevrolet Silverado 3500
- 2013 Chevrolet Silverado 3500
- 2014 Chevrolet Silverado 3500
- 2015 Chevrolet Silverado 3500
- 2016 Chevrolet Silverado 3500
- 2017 Chevrolet Silverado 3500
- 2018 Chevrolet Silverado 3500
- 2019 Chevrolet Silverado 3500
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
- 2016 Chevrolet Suburban
- 2017 Chevrolet Suburban
- 2018 Chevrolet Suburban
- 2019 Chevrolet Suburban
Chevrolet Suburban 2500
- 2000 Chevrolet Suburban 2500
- 2001 Chevrolet Suburban 2500
- 2002 Chevrolet Suburban 2500
- 2003 Chevrolet Suburban 2500
- 2004 Chevrolet Suburban 2500
- 2005 Chevrolet Suburban 2500
- 2006 Chevrolet Suburban 2500
- 2007 Chevrolet Suburban 2500
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
Chevrolet Trailblazer SS
- 2006 Chevrolet Trailblazer SS
- 2007 Chevrolet Trailblazer SS
- 2008 Chevrolet Trailblazer SS
- 2009 Chevrolet Trailblazer SS
Pontiac Trans Am
- 1998 Pontiac Trans Am
- 1999 Pontiac Trans Am
- 2000 Pontiac Trans Am
- 2001 Pontiac Trans Am
- 2002 Pontiac Trans Am
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
GMC Yukon XL 2500
- 2000 GMC Yukon XL 2500
- 2001 GMC Yukon XL 2500
- 2002 GMC Yukon XL 2500
- 2003 GMC Yukon XL 2500
- 2004 GMC Yukon XL 2500
- 2005 GMC Yukon XL 2500
- 2006 GMC Yukon XL 2500
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 233/239 cam fit?
Texas Speed lists the 233/239 as best suited for 5.7L and 6.0L LS engines such as the LS1, LS6, LS2 and 6.0L truck engines. Texas Speed's fitment list also covers the 4.8L and 5.3L truck platforms of the same era.
How much power does the 233/239 camshaft add?
Texas Speed's dyno testing shows a solid 50 to 55 rear-wheel horsepower gain, approximately 5 to 7 horsepower more than the Texas Speed Torquer V2 camshaft. Results vary with heads, intake, exhaust and tuning.
What stall converter and rear gear does the 233/239 need?
Texas Speed recommends a 3,200 rpm or higher stall converter in automatic cars and a 3.23 or deeper rear gear for optimal performance with the 233/239 camshaft.
Will the 233/239 cam clear stock pistons and untouched heads?
Yes. Texas Speed states the 233/239 fits stock untouched heads with no piston-to-valve clearance issues, although measuring clearance is always recommended during any camshaft installation.
Can the 233/239 camshaft be daily driven?
Texas Speed describes it as a very streetable cam that can be daily driven once properly tuned, with a very aggressive idle and a 2,000 to 7,000 rpm operating range. Tuning is required for both automatic and manual cars.
How does the 233/239 compare to the 228R cam?
The 233/239 adds five degrees of intake and eleven degrees of exhaust duration over the 228/228 grind for roughly 5 more rear-wheel horsepower at the top of its range and a more aggressive idle. Both share .600" lift, a 112 LSA, 10.1:1 recommended compression and a 3,200 rpm stall recommendation.
