The Texas Speed Gen 4 Engine Conversion Package gathers the parts needed to run a Gen IV LS engine in a vehicle that originally came with a Gen III LS. A Gen IV engine reads cam position at the front timing cover and places its knock sensors on the outside of the block, while a Gen III vehicle harness expects a cam sensor at the rear of the block and knock sensors under the valley cover. This kit supplies the LS2 style covers and harness extensions that bridge those differences in one order.
Included are an LS2 style valley cover with gasket and bolts, four LS2 style lifter trays, an LS2 style timing cover assembly with cover, gasket, bolts, cam sensor and cam sensor harness, a Rollmaster 11-CS1180 single roller LS2 timing set with a 1x upper timing gear, and the cam sensor and knock sensor harness extensions. The package does not include a crankshaft reluctor wheel; if the Gen IV engine must be converted from 58x to 24x, Texas Speed stocks GM reluctor wheels separately.
Specifications
- Application: Gen IV LS engine installed in a Gen III LS vehicle, per Texas Speed
- Timing cover: LS2 style assembly with cover, gasket, bolts, cam sensor and cam sensor harness
- Valley cover: LS2 style with gasket and bolts
- Lifter trays: LS2 style, qty 4
- Timing set: Rollmaster 11-CS1180 single roller LS2 set with 1x upper timing gear
- Cam sensor harness: Extension to move the cam sensor connection from the rear of the block to the front timing cover
- Knock sensor harness: Extension to relocate the knock sensors from under the valley cover to the sides of the block
- Not included: Crankshaft reluctor wheel for 58x to 24x conversion
- Engine families per Texas Speed: Gen III LS 4.8/5.3 and 5.7/6.0, Gen IV LS 6.0/6.2
Kit Includes
- LS2 style valley cover with gasket and bolts (TSP-LS3-VC)
- LS2 style lifter trays, qty 4
- Cam sensor harness extension, rear of block to front timing cover (RTX-LS2-CSAH-2)
- Knock sensor harness extension, under valley cover to exterior block sides (RTX-LS2-KSRH)
- LS2 style timing cover assembly with cover, gasket, bolts, cam sensor and cam sensor harness (TSP-3906)
- Rollmaster 11-CS1180 single roller LS2 timing set with 1x upper timing gear (ROL-NA-CS1180)
Note: This package does not include a new crankshaft reluctor wheel. If the Gen 4 engine needs to be converted from 58x to 24x, a GM reluctor wheel is sold separately.
Vehicle Applications
Intended for Gen III LS vehicles receiving a Gen IV LS engine. The vehicle list below shows the Gen III LS era applications (through 2007) from Texas Speed's fitment data; confirm the vehicle originally came with a Gen III (24x) LS engine before ordering.
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
Cadillac Escalade
- 2005 Cadillac Escalade
Pontiac Firebird
- 1998 Pontiac Firebird
- 1999 Pontiac Firebird
- 2000 Pontiac Firebird
- 2001 Pontiac Firebird
- 2002 Pontiac Firebird
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
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
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
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
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
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 Gen 4 to Gen 3 conversion package?
The package includes an LS2 style valley cover with gasket and bolts, four LS2 style lifter trays, an LS2 style timing cover assembly with cover, gasket, bolts, cam sensor and harness, a Rollmaster 11-CS1180 single roller timing set with a 1x upper gear, a cam sensor harness extension and a knock sensor harness extension.
Why do I need a conversion kit to put a Gen 4 LS in a Gen 3 vehicle?
Gen IV LS engines read cam position at the front timing cover and mount their knock sensors on the sides of the block, while Gen III vehicle wiring expects a rear cam sensor and knock sensors under the valley cover. The Texas Speed package supplies the LS2 style covers and harness extensions that let the Gen III harness connect to the Gen IV engine.
Does this kit include a 24x reluctor wheel for the crankshaft?
No. Texas Speed states the package does not include a new reluctor wheel. If the Gen 4 engine needs to be converted from 58x to 24x for the Gen 3 computer, a GM reluctor wheel must be purchased separately.
Why does the timing set have a 1x cam gear?
The Rollmaster 11-CS1180 set in this package comes with a 1x upper timing gear, which is the cam signal type the LS2 style front timing cover cam sensor reads in this conversion. The timing set is part of the package so the cam gear and cover sensor are matched.
Which vehicles is this conversion package meant for?
Texas Speed intends it for vehicles that originally came with a Gen III LS engine, such as the 1998 to 2002 Camaro and Firebird, early LS Corvettes and the first LS-powered Silverado, Sierra, Tahoe, Suburban, Yukon and Escalade, when a Gen IV LS engine is swapped in.
