The Texas Speed Cathedral Stroker Stage 1 Camshaft is the most street-oriented grind in the Texas Speed Cathedral Stroker lineup, developed for 383 cubic inch and larger naturally aspirated LS stroker engines with cathedral-port cylinder heads. Its 235/250 duration, .644"/.632" lift and 110 degree lobe separation are sized for the added displacement and airflow of a stroker rather than a stock-displacement engine.
Texas Speed designs its lobes in-house to match engine size, head airflow, valvetrain and rpm range, and checks valvetrain stability with Spintron testing. The Stage 1 gives an aggressive performance idle and a strong midrange to upper-rpm powerband. Aftermarket cathedral-port heads and an upgraded intake manifold are strongly recommended, upgraded valve springs and supporting valvetrain parts are required for the lift and lobe design, and custom tuning is required. Converter, gearing and compression recommendations depend on the complete combination.
Specifications
- Duration at .050": 235/250
- Valve lift: .644"/.632"
- Lobe separation angle: 110 degrees
- Intake centerline: 109 degrees
- Minimum recommended displacement: 383 cubic inches
- Cylinder head type: Cathedral-port LS
- Recommended combination: Aftermarket cathedral-port heads and intake manifold
- Best use: Naturally aspirated street and street/strip stroker builds
- Idle quality: Aggressive performance idle
- Powerband: Strong midrange and upper-rpm
- Valve springs: Upgraded valve springs and supporting valvetrain required
- Tuning: Custom tuning required
- Vehicle usage: Daily driver friendly, most street-oriented Cathedral Stroker cam
- Chop level: Mild chop
Note: This camshaft is designed for 383 cubic inch and larger LS stroker combinations and is not intended as a general replacement cam for stock-displacement engines.
Note: Verify piston-to-valve clearance, valve spring installed height, coil bind clearance, retainer-to-seal clearance, pushrod length and overall valvetrain geometry during installation.
Vehicle Applications
Engine families: GM Gen III and Gen IV LS with cathedral-port cylinder heads, 383 cubic inches and larger. Vehicles in the list below equipped with rectangular-port heads (LS3, L92, L99, LSA, L76 and similar) do not apply unless the engine has been built with cathedral-port heads.
Chevrolet Camaro
- 1998 Chevrolet Camaro
- 1999 Chevrolet Camaro
- 2000 Chevrolet Camaro
- 2001 Chevrolet Camaro
- 2002 Chevrolet Camaro
- 2010 Chevrolet Camaro
- 2011 Chevrolet Camaro
- 2012 Chevrolet Camaro
- 2013 Chevrolet Camaro
- 2014 Chevrolet Camaro
- 2015 Chevrolet Camaro
Chevrolet Colorado
- 2009 Chevrolet Colorado
- 2010 Chevrolet Colorado
- 2011 Chevrolet Colorado
- 2012 Chevrolet Colorado
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
- 2008 Chevrolet Corvette
- 2009 Chevrolet Corvette
- 2010 Chevrolet Corvette
- 2011 Chevrolet Corvette
- 2012 Chevrolet Corvette
- 2013 Chevrolet Corvette
Cadillac CTS-V
- 2004 Cadillac CTS-V
- 2005 Cadillac CTS-V
- 2006 Cadillac CTS-V
- 2007 Cadillac CTS-V
- 2008 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 Grand Prix
- 2005 Pontiac Grand Prix
- 2006 Pontiac Grand Prix
- 2007 Pontiac Grand Prix
- 2008 Pontiac Grand Prix
Pontiac GTO
- 2004 Pontiac GTO
- 2005 Pontiac GTO
- 2006 Pontiac GTO
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
- 2009 GMC Sierra 2500
- 2010 GMC Sierra 2500
- 2011 GMC Sierra 2500
- 2012 GMC Sierra 2500
- 2013 GMC Sierra 2500
- 2014 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
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
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
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 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
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
- 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 is the Texas Speed Cathedral Stroker Stage 1 cam for?
It is designed for GM Gen III and Gen IV LS stroker engines of 383 cubic inches and larger with cathedral-port cylinder heads, running naturally aspirated. Texas Speed does not intend it as a replacement cam for stock-displacement engines.
How does Stage 1 compare to the Stage 2 and Stage 3 Cathedral Stroker cams?
Stage 1 (235/250, .644"/.632", 110 LSA) is the most street-oriented option. Stage 2 (238/253, 111 LSA) is more aggressive for street/strip use, and Stage 3 (244/256, 112 LSA) is the maximum high-rpm grind for 402 cubic inch and larger engines.
What valve springs and heads do I need for this cam?
Upgraded valve springs and supporting valvetrain components are required for the .644"/.632" lift and aggressive lobe design. Texas Speed strongly recommends aftermarket cathedral-port cylinder heads and an upgraded intake manifold to take advantage of the cam.
Is tuning required after installing the Cathedral Stroker Stage 1?
Yes. Texas Speed states custom tuning is required. Converter, gearing, compression ratio and valvetrain recommendations depend on the complete engine and vehicle combination.
What does the idle sound like with this cam?
Texas Speed describes the Stage 1 as having an aggressive performance idle while remaining the most street-oriented camshaft in the Cathedral Stroker lineup, with a strong midrange and upper-rpm powerband.
Will this cam work in a stock 5.3L or 6.0L?
No. The Cathedral Stroker Stage 1 is matched to the displacement and airflow of 383 cubic inch and larger stroker combinations and is not intended as a general replacement camshaft for stock-displacement LS engines.
