The Texas Speed 3-Bolt Camshaft Conversion Kit supplies the two parts needed to run a three-bolt aftermarket camshaft in a GM LS engine that came from the factory with a single-bolt cam gear: a 4x three-bolt camshaft gear and a set of ARP cam bolts. Texas Speed describes the three-bolt cam swap as the common configuration, which is why this kit is a frequent add-on for later LS engines that left the factory with a one-bolt camshaft.
The kit lists the Texas Speed OE-style 4x three-bolt upper sprocket (TSP-6481, built like GM 12586481) and the ARP LS1 cam bolt kit (ARP-134-1003). The gear is made to OEM fit and finish so it works with the factory single roller timing chain. Texas Speed notes that engines equipped with variable valve timing (VVT) need its VVT Delete Kit instead of this conversion kit.
Specifications
- Purpose: Converts a 1-bolt camshaft timing gear to the 3-bolt pattern for a 3-bolt cam swap
- Cam gear: Texas Speed OE-style 4x three-bolt upper sprocket, like GM 12586481 (TSP-6481)
- Cam bolts: ARP LS1 Chevy cam bolt kit (ARP-134-1003)
- Engines per Texas Speed data: Gen III LS 4.8/5.3, Gen IV LS 4.8/5.3 and 6.0/6.2
- VVT engines: Not covered; Texas Speed directs VVT engines to its VVT Delete Kit
- Part number: TSP-3BoltConvKit
Kit Includes
- Texas Speed OE-style 4x three-bolt upper timing sprocket, like GM 12586481 (TSP-6481), qty 1
- ARP LS1 Chevy cam bolt kit (ARP-134-1003), qty 1
Note: If the engine has VVT, Texas Speed directs buyers to its VVT Delete Kit rather than this 3-bolt conversion kit.
Vehicle Applications
Application per Texas Speed: Gen III and Gen IV LS engines that use a 1-bolt camshaft gear. The vehicle list reflects the fitment Texas Speed publishes for this kit.
Chevrolet Camaro
- 2010 Chevrolet Camaro
- 2011 Chevrolet Camaro
- 2012 Chevrolet Camaro
- 2013 Chevrolet Camaro
- 2014 Chevrolet Camaro
- 2015 Chevrolet Camaro
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
- 2009 Cadillac CTS-V
- 2010 Cadillac CTS-V
- 2011 Cadillac CTS-V
- 2012 Cadillac CTS-V
- 2014 Cadillac CTS-V
- 2015 Cadillac CTS-V
Cadillac Escalade
- 2008 Cadillac Escalade
- 2009 Cadillac Escalade
- 2010 Cadillac Escalade
- 2011 Cadillac Escalade
- 2012 Cadillac Escalade
- 2013 Cadillac Escalade
- 2014 Cadillac Escalade
Pontiac G8
- 2008 Pontiac G8
- 2009 Pontiac G8
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
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 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
- 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
- 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 is included in the Texas Speed 3-Bolt Conversion Kit?
The kit includes a Texas Speed OE-style 4x three-bolt camshaft gear (TSP-6481, like GM 12586481) and an ARP LS1 cam bolt kit (ARP-134-1003), which are the two parts needed to mount a three-bolt camshaft in a one-bolt engine.
Do I need this kit to install a Texas Speed camshaft?
Only if the engine currently has a one-bolt camshaft gear and the new camshaft uses the three-bolt pattern. Texas Speed calls this the common 3-bolt cam swap. Engines that already have a three-bolt cam gear do not need the kit.
Which LS engines does the 3-bolt conversion kit fit?
Texas Speed lists it for Gen III LS 4.8L and 5.3L and Gen IV LS 4.8L, 5.3L, 6.0L and 6.2L engines, with a vehicle list covering 2006 to 2015 GM cars and 2007 to 2014 trucks and SUVs.
Can I use the 3-bolt conversion kit on a VVT engine?
No. Texas Speed states that vehicles with variable valve timing should use its VVT Delete Kit instead of this conversion kit.
Are the cam bolts reusable factory bolts?
No. The kit includes a new ARP LS1 cam bolt kit (ARP-134-1003), so the camshaft gear is fastened with fresh ARP hardware rather than reused factory bolts.
