The Texas Speed Chopacabra Cam Kit packages the Chopacabra low lift truck camshaft with a set of drop-in LS6-style performance valve springs for 4.8L and 5.3L LS engines. The Chopacabra is ground at 214/222 duration, .550"/.550" lift, 108 LSA and 106 ICL, giving the aggressive lope the cam is known for along with strong midrange power while staying compatible with the factory torque converter.
Texas Speed tested this camshaft on a 5.3L with supporting modifications and tuning and recorded a gain of 67 hp and 26 lb-ft. The .550" lift means factory retainers, locks, seats, seals and pushrods are reused, so no dual springs or upgraded pushrods are needed. Pushrod length should still be measured, and may need to change if the lifter style changes during a DOD delete. Tuning is required.
Specifications
- Application: 4.8L and 5.3L Gen III and Gen IV LS
- Camshaft: Texas Speed Chopacabra low lift truck cam (TSP-CHOPacabra)
- Duration at .050": 214/222
- Valve lift: .550"/.550"
- Lobe separation angle: 108 degrees
- Intake centerline: 106 degrees
- Valve springs: Drop-in replacement LS6-style performance springs (PAC-2568-16)
- Reused factory parts: Retainers, locks, spring seats, seals and pushrods
- Tested gains: +67 hp, +26 lb-ft on a 5.3L with supporting mods and tuning
- Tuning: Required
Kit Includes
- Texas Speed Chopacabra low lift truck camshaft, 214/222 .550"/.550" 108 LSA 106 ICL (TSP-CHOPacabra)
- Performance valve springs, drop-in replacement LS6-style (PAC-2568-16)
Ordering Options
The only selection is whether to add a Tuning School custom tune; choose Kit Only for the camshaft and springs alone. Optional add-ons offered by Texas Speed include a cam retainer plate and bolts, crank bolt, front cover gasket kit, OE pushrods, valve seals, rocker arm trunnion upgrade kit, timing chain or timing set and a valve spring compressor tool.
Note: Pushrod length should always be measured before installation. If the lifter style changes, such as in a DOD delete, pushrod length may need to be adjusted.
Vehicle Applications
Engine families covered per Texas Speed: Gen III and Gen IV LS 4.8L and 5.3L.
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
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
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 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
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
- 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 comes in the Texas Speed Chopacabra Cam Kit?
The kit includes the Texas Speed Chopacabra low lift camshaft, 214/222 duration with .550" lift on a 108 LSA, and a set of drop-in LS6-style performance valve springs. A Tuning School custom tune can be added as an option.
What engines does the Chopacabra Cam Kit fit?
Texas Speed lists this kit for 4.8L and 5.3L Gen III and Gen IV LS engines, which covers 1999 to 2013 Silverado and Sierra 1500 and 2000 to 2014 Tahoe, Suburban and Yukon in the finder.
How much power does the Chopacabra cam add?
Texas Speed recorded a gain of 67 hp and 26 lb-ft on a 5.3L engine with supporting modifications and tuning. Results will vary with heads, intake, exhaust and tune.
Do I need new pushrods or dual springs with the Chopacabra kit?
No. The .550" lift cam works with the included LS6-style single springs and the factory pushrods, retainers, locks, seats and seals, though pushrod length should be measured, especially after a lifter change.
Does the Chopacabra cam require a stall converter?
No. Texas Speed designed the Chopacabra to work with the factory torque converter while still delivering its choppy idle.
Is tuning required after installing the Chopacabra Cam Kit?
Yes. Texas Speed states tuning is required and recommended for the best performance and drivability, and offers a Tuning School custom tune as an option on this kit.
