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  See more parts for Cadillac CTS
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Texas Speed & Performance Cleetus McFarland "Leroy 1.0" Resleeved 427 CID Short-Block Cadillac | Chevrolet | GMC 1997-2017 - TSP-427RESL-CLEETUS-SB
Run the same 427 CID re-sleeved Gen 4 short-block as Cleetus McFarland's savage "Leroy" C5 Corvette that was the FIRST GM six-speed manual vehicle in the 7's! This short-block is built for boost and ready for some serious power and made all of the bald eagles for Cleetus' epic 7.82 @ 176 MPH pass! We have dubbed this engine "Leroy 1.0" since "Leroy 2.0" was upgraded to a GMPP LSx 6-bolt iron block.

This engine combinaton was built for Leroy's twin turbo setup with a goal of supporting up to 1,000 RWHP with ease. Complete with bald eagles and a healthy dose of 'murica, this short-block is ready to do it for Dale! Cleetus definitely pushed this engine to the limits making well past the 1,000 RWHP mark, so if you plan to do the same we do recommend upgrading to 1/2" head studs. Give us a call, and we will be glad to help you figure compression ratio for your setup. We also stock all of the GM and aftermarket bolts and gaskets to complete your engine build!

The optional LS2 conversion package will be required if you are installing this engine into a vehicle that was originally equipped with a Gen 3 engine. The LS2 conversion package will include the following items: LS2 valley cover, set of 4 LS2 lifter trays, cam sensor extension harness, knock sensor extension harness, LS2 timing cover set, and Rollmaster LS2 single-roller timing set.



Specification:
  • New TSP Re-sleeved Gen 4 Aluminum Engine Block with Darton Stepped Sleeves
  • TSP Forged 4.00" Stroke Wet Sump Crankshaft with Your Choice of 24x or 58x Reluctor Wheel
  • TSP 6.125" Super I-Beam Connecting Rods with ARP L19 Rod Bolts
  • Wiseco 4.125" Forged Piston Set with -20cc Dish
  • Wiseco Upgraded HD Piston Wrist Pins
  • Wiseco Steel Top/Napier 2nd Ring Set
  • ARP Main Stud Kit
  • 12 Quarts of Break-In Oil
  • Complete Set of TSP Windage Tray Spacers


Fitment:
  • 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
Note:
  • Competition Use Only, Not Legal for Road Use
Proposition 65

⚠ WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Vehicle
2004-2007, 2009-2015
 Cadillac CTS
2008
 Cadillac CTS-V
2005-2014
 Cadillac Escalade
1998-2002, 2010-2015
 Chevrolet Camaro
1997-2013
 Chevrolet Corvette
2014-2017
 Chevrolet SS
1999-2013
 Chevrolet Silverado 1500
2014
 Chevrolet Suburban
2000-2013
 Chevrolet Suburban 1500
2000-2014
 Chevrolet Tahoe
2006-2009
 Chevrolet Trailblazer
2009-2013
 GMC Sierra
1999-2014
 GMC Yukon
1998-2002
 Pontiac Firebird
2008-2009
 Pontiac G8
2004-2006
 Pontiac GTO

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ABOUT TEXAS SPEED AND PERFORMANCE

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 LINE

Texas 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 PERFORMANCE

The 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.

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