The Texas Speed 454ci LSX Iron Short Block is built on a brand new GM Performance Parts LSX iron block and comes fully assembled for serious LS performance builds. A 4.125" stroke crankshaft and 4.185" bore produce 454 cubic inches, and Texas Speed offers the crankshaft with a 24x or 58x reluctor wheel so the short block can match either Gen III or Gen IV engine management. The reluctor choice should be specified when ordering.
Wiseco 4.185" -2.8cc pistons are standard, the block is compatible with LS1, LS2, LS3, L92, LS6 and most aftermarket cylinder heads, and the oil and coolant plugs come installed. Texas Speed notes the 454 LSX is not recommended for extreme boost or large nitrous use, suggesting a limit of about a 150 horsepower nitrous shot, and that LSX and Dart based builds add six to eight weeks of lead time because of block availability. Twelve quarts of break-in oil are included. Options such as an LS1 conversion package, 1/2" ARP head studs with machining and a dry sump crankshaft for 2006 and newer Corvette Z06, Grand Sport and ZR1 are available by quote.
Specifications
- Displacement: 454 cubic inches
- Block: New GM Performance Parts LSX iron block
- Bore: 4.185" (unless otherwise noted)
- Stroke: 4.125"
- Pistons: Wiseco 4.185" -2.8cc (standard)
- Reluctor wheel: Choice of 24x or 58x
- Cylinder head compatibility: LS1, LS2, LS3, L92, LS6 and most aftermarket heads
- Plugs: Oil and coolant plugs installed
- Usage limits: Not recommended for extreme boost or large nitrous; limit nitrous to about a 150 HP shot
- Lead time: Add 6 to 8 weeks for LSX and Dart based builds
- Break-in oil: 12 quarts included
- Available options: LS1 conversion package, 1/2" ARP head stud upgrade with machining, dry sump crankshaft for 2006+ Corvette Z06, Grand Sport and ZR1
Kit Includes
- Texas Speed 454ci LSX short block (TSP-454-LSX-9-STD)
- Royal Purple 10W-30 break-in oil, 12 quarts (RYP-11487)
- Texas Speed LS engine stand with 3/8" drilled holes for shipping (TSP-Cradle)
- Shipping crate (TSP-SDCrateSB)
Note: Lead time: Texas Speed adds six to eight weeks to all LSX and Dart based builds because of block availability.
Note: Not recommended for extreme boost or large nitrous use; Texas Speed suggests limiting nitrous to about a 150 HP shot.
Note: Custom builds and upgraded rotating assembly options are available; contact BPS or Texas Speed for an itemized quote and application guidance. Specify 24x or 58x reluctor when ordering.
Vehicle Applications
Engine family: Gen III and Gen IV LS architecture on a GM LSX iron block. Vehicle list reflects the LS applications published by Texas Speed; choose the 24x or 58x reluctor to match the vehicle.
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 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 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
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 SS
- 2014 Chevrolet SS
- 2015 Chevrolet SS
- 2016 Chevrolet SS
- 2017 Chevrolet SS
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
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
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 454 LSX short block?
The short block includes a new GM Performance Parts LSX iron block with oil and coolant plugs installed, a 4.125" stroke crankshaft with a 24x or 58x reluctor, Wiseco 4.185" -2.8cc pistons and the connecting rods, fully assembled by Texas Speed, plus 12 quarts of break-in oil, an LS engine stand and a shipping crate.
Which cylinder heads fit the 454 LSX short block?
Texas Speed states the 454 LSX short block is compatible with LS1, LS2, LS3, L92 and LS6 cylinder heads as well as most aftermarket LS heads. An upgrade to 1/2" ARP head studs with the required machining is available as an option.
Can I run big boost or nitrous on the 454 LSX?
Texas Speed does not recommend the 454 LSX short block for extreme boost or large nitrous use and suggests limiting nitrous to about a 150 horsepower shot. Buyers planning higher power adders should look at the Texas Speed 427 LSX or Dart based short blocks.
Does the 454 LSX come with a 24x or 58x reluctor?
Texas Speed offers the 4.125" stroke crankshaft with either a 24x or 58x reluctor wheel, so specify the reluctor that matches the vehicle's engine management when ordering. An optional LS1 conversion package is also offered for LS1 vehicle swaps.
How long does the 454 LSX short block take to ship?
Texas Speed adds six to eight weeks of lead time to all LSX and Dart based builds because of block availability, so plan the project timeline accordingly even though the part is listed under in-stock engines.
Which vehicles can use the 454 LSX short block?
It is an LS-architecture short block, so it suits Gen III and Gen IV LS applications such as 1998 to 2015 Camaro, 1997 to 2013 Corvette, GTO, G8, CTS-V, Chevrolet SS and 1999 to 2014 GM trucks and SUVs, plus LS swaps. A dry sump crankshaft option is offered for 2006 and newer Corvette Z06, Grand Sport and ZR1 installations.
