.jpeg?q=90&p=thumb&w=200&h=200)
.jpeg?q=90&p=thumb&w=40&h=40)
Brakes 
Driveline 
Electronics 
Handlebars & Controls 
Package Deals 
Wheel Accessories 
Wheels by Vehicle 
Tools and Maintenance 
Universal & Repair 
Vivid Racing Gear 
See more parts for Cadillac CTS
Select the year of your Cadillac CTS:
Texas Speed & Performance TSP-387LB-X Long Block
If you're serious about upgrading your ride, the TSP-387LB-X Long Block from Texas Speed & Performance is a powerhouse ready to transform your vehicle. Built with a new GMPP LSx cast iron block, this fully assembled engine is designed for performance enthusiasts who want to maximize their horsepower and torque.
Engine Specifications
- Displacement: 387 CID (4.125" bore) or 388 CID (4.130" bore)
- Crankshaft: Factory GM 3.622" stroke crankshaft
- Reluctor Wheel Options: 24X or 58X
- Piston Options: Wiseco or Diamond Racing
- Connecting Rods and Crankshafts: Custom options available
- Included: 12 quarts of break-in oil
Fitment
This long block is compatible with a range of popular GM vehicles, making it an excellent choice for those looking to upgrade their engine. Here’s where it fits:
- Cadillac CTS-V (2004-2015)
- Cadillac Escalade (2005-2014)
- Chevrolet Camaro (1998-2015)
- Chevrolet Corvette (1997-2013)
- Chevrolet Silverado 1500 (1999-2013)
- Chevrolet SS (2014-2017)
- Chevrolet Suburban (2000-2014)
- Chevrolet Tahoe (2000-2014)
- Chevrolet Trailblazer (2006-2009)
- GMC Sierra 1500 (1999-2013)
- GMC Yukon (1999-2014)
- Pontiac Firebird (1998-2002)
- Pontiac G8 (2008-2009)
- Pontiac GTO (2004-2006)
- Universal Retrofit (1997-2016)
Upgrade Options
For those pushing the limits with nitrous or boost, consider upgrading to 1/2" head studs. This option includes ARP hardware and necessary machine work, but you will need to select PRC aftermarket casting cylinder heads, as GM castings won't accommodate the larger bolt holes.
Installation and Break-In
Every TSP engine comes prepped with oil and coolant plugs, making installation straightforward. Plus, the included break-in oil is critical for ensuring proper ring sealing and longevity. Many off-the-shelf oils lack the necessary ZDDP additives for a new engine, so you can trust Texas Speed’s commitment to quality here.
Customer Feedback
Just ask a Chevrolet Camaro owner who recently installed the TSP-387LB-X: "This engine transformed my ride! The power delivery is incredible, and the fit was spot on. I can't believe the difference it made on the track!"
Important Notes
- Competition use only; not legal for road use.
- Expect a 6-8 week lead time for LSx/Dart-based builds due to block availability.
Ready to elevate your ride's performance? Contact us for a detailed quote and let’s get your engine upgrade underway!
Proposition 65
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
| Vehicle Make/Model | Year | Trims |
|---|---|---|
| Cadillac CTS | 2004-2007, 2009-2015 | V |
| Cadillac CTS | 2012 | V Black Diamond |
| Cadillac CTS | 2013-2014 | V Premium Black Diamond |
| Cadillac CTS | 2013-2014 | V Luxury |
| Cadillac CTS | 2014-2015 | Vsport Premium |
| Cadillac CTS | 2014-2015 | Vsport |
| Cadillac Escalade | 2005-2014 | Base |
| Cadillac Escalade | 2008-2014 | Platinum |
| Cadillac Escalade | 2009-2013 | Hybrid |
| Cadillac Escalade | 2010-2013 | Hybrid Platinum |
| Cadillac Escalade | 2011-2014 | Premium |
| Cadillac Escalade | 2011-2014 | Luxury |
| Cadillac Escalade | 2012 | Special Edition |
| Cadillac Escalade ESV | 2005-2014 | Base |
| Cadillac Escalade ESV | 2008-2014 | Platinum |
| Cadillac Escalade ESV | 2010 | Lujo |
| Cadillac Escalade ESV | 2011-2014 | Luxury |
| Cadillac Escalade ESV | 2011-2014 | Premium |
| Cadillac Escalade ESV | 2012 | Special Edition |
| Cadillac Escalade EXT | 2005-2013 | Base |
| Cadillac Escalade EXT | 2011-2013 | Premium |
| Cadillac Escalade EXT | 2011-2013 | Luxury |
| Chevrolet Camaro | 1998-2002 | Base |
| Chevrolet Camaro | 1998-2002 | Z28 SS |
| Chevrolet Camaro | 1998-2002 | Z28 |
| Chevrolet Camaro | 1998 | Lujo |
| Chevrolet Camaro | 2010-2015 | LS |
| Chevrolet Camaro | 2010-2015 | LT |
| Chevrolet Camaro | 2010-2015 | SS |
| Chevrolet Camaro | 2011-2012 | 2SS |
| Chevrolet Camaro | 2011-2012 | 1SS |
| Chevrolet Camaro | 2011-2012 | 1LT |
| Chevrolet Corvette | 1997-2013 | Base |
| Chevrolet Corvette | 1998 | Indianapolis 500 Pace Car |
| Chevrolet Corvette | 2003 | 50th Anniversary Edition Pace Car |
| Chevrolet Corvette | 2003 | 50th Anniversary Edition |
| Chevrolet Corvette | 2008 | 427 Limited Edition Z06 |
| Chevrolet Corvette | 2011 | Z06 Carbon |
| Chevrolet Corvette | 2013 | 427 |
| Chevrolet SS | 2014-2017 | Base |
| Chevrolet Silverado 1500 | 1999-2013 | LS |
| Chevrolet Silverado 1500 | 1999-2013 | LT |
| Chevrolet Silverado 1500 | 1999-2012 | Base |
| Chevrolet Silverado 1500 | 2002-2013 | WT |
| Chevrolet Silverado 1500 | 2002 | Custom |
| Chevrolet Silverado 1500 | 2003-2006 | SS |
| Chevrolet Silverado 1500 | 2004-2006, 2009-2013 | Hybrid |
| Chevrolet Silverado 1500 | 2004-2005 | Z71 Off-Road |
| Chevrolet Silverado 1500 | 2007-2013 | LTZ |
| Chevrolet Silverado 1500 | 2010-2013 | XFE |
| Chevrolet Silverado 1500 Classic | 2007 | Hybrid |
| Chevrolet Silverado 1500 Classic | 2007 | LS |
| Chevrolet Silverado 1500 Classic | 2007 | LT |
| Chevrolet Silverado 1500 Classic | 2007 | SS |
| Chevrolet Silverado 1500 Classic | 2007 | WT |
| Chevrolet Silverado 1500 HD | 2001-2003, 2005-2006 | LT |
| Chevrolet Silverado 1500 HD | 2001-2003, 2005 | LS |
| Chevrolet Silverado 1500 HD | 2005 | Base |
| Chevrolet Silverado 1500 HD Classic | 2007 | LT |
| Chevrolet Suburban | 2014 | LT |
| Chevrolet Suburban 1500 | 2000-2014 | LS |
| Chevrolet Suburban 1500 | 2000-2012 | Base |
| Chevrolet Suburban 1500 | 2000-2014 | LT |
| Chevrolet Suburban 1500 | 2002-2006 | Z71 |
| Chevrolet Suburban 1500 | 2006-2014 | LTZ |
| Chevrolet Suburban 1500 | 2010 | 75 Aniversario Diamond Edition |
| Chevrolet Suburban 2500 | 2000-2001, 2009-2012 | Base |
| Chevrolet Suburban 2500 | 2000-2013 | LT |
| Chevrolet Suburban 2500 | 2000-2013 | LS |
| Chevrolet Suburban 2500 | 2007 | LTZ |
| Chevrolet Tahoe | 2000, 2002-2006, 2008-2010 | Z71 |
| Chevrolet Tahoe | 2000-2001, 2006-2009, 2011-2012 | Base |
| Chevrolet Tahoe | 2000 | Limited |
| Chevrolet Tahoe | 2000-2014 | LT |
| Chevrolet Tahoe | 2000-2014 | LS |
| Chevrolet Tahoe | 2007-2014 | LTZ |
| Chevrolet Tahoe | 2007-2014 | PPV |
| Chevrolet Tahoe | 2008-2013 | Hybrid |
| Chevrolet Tahoe | 2012-2014 | SSV |
| Chevrolet Tahoe | 2014 | Police |
| Chevrolet Trailblazer | 2006-2009 | LT |
| Chevrolet Trailblazer | 2006-2007 | LS |
| Chevrolet Trailblazer | 2006-2007 | A |
| Chevrolet Trailblazer | 2006-2007 | B |
| Chevrolet Trailblazer | 2006-2008 | Base |
| Chevrolet Trailblazer | 2006-2009 | SS |
| Chevrolet Trailblazer EXT | 2006 | Base |
| Chevrolet Trailblazer EXT | 2006 | B |
| Chevrolet Trailblazer EXT | 2006 | LS |
| Chevrolet Trailblazer EXT | 2006 | LT |
| GMC Sierra | 2009, 2011-2012 | Base |
| GMC Sierra | 2009-2013 | Denali |
| GMC Sierra | 2010, 2013 | SLT |
| GMC Sierra | 2013 | SLE |
| GMC Sierra 1500 | 2009-2013 | Denali |
| GMC Sierra 1500 | 2009-2013 | SLE |
| GMC Sierra 1500 | 2009-2013 | SLT |
| GMC Sierra 1500 | 2009-2013 | WT |
| GMC Sierra 1500 | 2009-2013 | SL |
| GMC Sierra 1500 | 2009-2013 | Hybrid |
| GMC Sierra 1500 | 2010-2013 | XFE |
| GMC Sierra 2500 HD | 2009-2013 | SLE |
| GMC Sierra 2500 HD | 2009-2013 | SLT |
| GMC Sierra 2500 HD | 2009-2013 | WT |
| GMC Sierra 2500 HD | 2011-2013 | Denali |
| GMC Sierra 3500 HD | 2009-2013 | WT |
| GMC Sierra 3500 HD | 2009-2013 | SLT |
| GMC Sierra 3500 HD | 2009-2013 | SLE |
| GMC Sierra 3500 HD | 2011-2013 | Denali |
| GMC Yukon | 1999-2014 | SLT |
| GMC Yukon | 1999-2014 | SLE |
| GMC Yukon | 1999-2014 | Denali |
| GMC Yukon | 2006 | SL |
| GMC Yukon | 2007-2009, 2011-2012 | Base |
| GMC Yukon | 2008-2013 | Hybrid |
| GMC Yukon | 2010-2013 | Denali Hybrid |
| Pontiac Firebird | 1998-2002 | Trans Am |
| Pontiac Firebird | 1998-2002 | Formula |
| Pontiac Firebird | 1998-2002 | Base |
| Pontiac G8 | 2008-2009 | GT |
| Pontiac G8 | 2008-2009 | Base |
| Pontiac G8 | 2009 | GXP |
| Pontiac GTO | 2004-2006 | Base |
Texas Speed and Performance began as a small business in 2003. Texas Speed and Performance is situated in Georgetown, Texas, and is a leader in the LSx sector. Texas Speed & Performance has quickly established itself as one of the largest performance makers and retailers of premium LSX and LT1 packages in the United States. Texas Speed and Performance founders, Trevor Doelling and Jason Magnum, have a combined 30+ years of experience in the high-efficiency sector and are constantly striving to research and manufacture the highest quality performance goods for your car. This is accomplished by putting their products through their paces on their in-house futuristic super flow engine dyno. Texas Speed and Performance components can be found in some of the fastest street and competition automobiles in the country.
WHY CHOOSE TEXAS SPEED AND PERFORMANCE?Texas Speed and Performance provides all levels of aftermarket performance products from LSx and 2014+ 6.2L LT1/LT4 performance parts, aftermarket cast cylinder heads, basic air induction exhaust, camshafts, stroker engines and in-house machining of all their engines. They are one of the largest LSx and 2014+ 6.2L LT1/LT4 specific shops in the country. Owing to their in-house cylinder head manufacturing, engine assembly, and camshaft grinding facility, they assist customers with all of their high-performance LSx and 2014+ 6.2L LT1/LT4 needs and requirements.
TEXAS SPEED AND PERFORMANCE PRODUCT LINETexas Speed and Performance Exhaust offers camshafts, short and long blocks, turn-key engines, valvetrain, crankshafts, rods, and aftermarket cylinder heads.
VIVID RACING-TEXAS SPEED AND PERFORMANCEThe Texas Speed and Performance products at Vivid Racing include the Texas Speed and Performance Stage 4.2 LS7 Camshaft Chevrolet Camaro, Corvette 2006-2015, which has fitment for the Chevrolet Camaro 2012-2015 and Chevrolet Corvette 2006-2013 models.
Check out these other great products
Error: Failed to add product
Please refresh the page and try again.