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Texas Speed & Performance TSP-376-RESLLT1LB Long-Block
The TSP-376-RESLLT1LB from Texas Speed & Performance is a high-performance long-block designed for serious automotive applications. This unit features a newly resleeved Gen 5 aluminum block, available with either Power Bore or Darton dry sleeves. These advanced dry sleeves provide superior tensile strength and thickness compared to standard GM sleeves, ensuring durability under high-stress conditions.
Key Specifications
- Engine Type: 376 CID LT1 Long-Block
- Block Material: Aluminum with resleeved options
- Bore Size: Recommended maximum of 4.125" for power-adder applications
- Piston Options: Wiseco or Mahle, with 2618 forgings featuring lowered ring lands for nitrous and boost compatibility
Included Components
The TSP-376-RESLLT1LB comes equipped with an array of high-quality components:
- PRC CNC-Ported GM LT1 Cylinder Heads
- TSP .660" Dual Valve Spring Kit with PAC Racing Springs & Titanium Retainers
- Your choice of TSP LT1 VVT Camshaft
- New GM Timing Set
- Johnson 2110R Lifters
- TSP Hardened Chromoly Pushrods
- GM Cylinder Head Bolts & MLS Head Gaskets
- New GM Wet Sump or Dry Sump Oil Pump
- AFM/DOD Stacks Plugged
- Additional components: Lifter trays, camshaft retainer plate, GM balancer bolt, and cylinder head dowel pins
Fitment
- Cadillac CTS-V (2017-2019)
- Cadillac Escalade (2015-2019)
- Chevrolet Camaro (2016-2021)
- Chevrolet Corvette (2014-2019)
- Chevrolet Silverado 1500 (2014-2022)
- Chevrolet Suburban (2015-2022)
- Chevrolet Tahoe (2015-2022)
- GMC Sierra 1500 (2014-2022)
- GMC Yukon (2015-2022)
- Universal Retrofit (1997-2018)
Installation Notes
All engines are shipped via truck freight, and the listed shipping costs may not reflect the actual charges. Customers will be contacted with the correct shipping cost post-purchase. Each engine is shipped with 12 quarts of break-in oil included at no extra cost, ensuring optimal ring sealing and proper break-in procedures.
Important Considerations
- Select 4.070" bore pistons or larger for Power Bore sleeves.
- This product is intended for competition use only and is not legal for road use.
Proposition 65
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
| Vehicle Make/Model | Year | Trims |
|---|---|---|
| Cadillac CTS | 2017-2019 | Vsport Premium Luxury |
| Cadillac CTS | 2017-2019 | Vsport |
| Cadillac CTS | 2017-2019 | V |
| Cadillac Escalade | 2015-2019 | Platinum |
| Cadillac Escalade | 2015-2017 | Premium |
| Cadillac Escalade | 2015-2019 | Luxury |
| Cadillac Escalade | 2015-2019 | Base |
| Cadillac Escalade | 2017-2019 | Premium Luxury |
| Cadillac Escalade ESV | 2015-2019 | Platinum |
| Cadillac Escalade ESV | 2015-2019 | Base |
| Cadillac Escalade ESV | 2015-2019 | Premium |
| Cadillac Escalade ESV | 2015-2019 | Luxury |
| Cadillac Escalade ESV | 2017-2019 | Premium Luxury |
| Chevrolet Camaro | 2016-2021 | LT |
| Chevrolet Camaro | 2016-2021 | SS |
| Chevrolet Camaro | 2016-2019 | RS |
| Chevrolet Camaro | 2017-2021 | LS |
| Chevrolet Camaro | 2018 | RS Edicion Especial |
| Chevrolet Camaro | 2019 | RS Fire Edition |
| Chevrolet Camaro | 2020-2021 | LT1 |
| Chevrolet Corvette | 2014-2016 | Z51 |
| Chevrolet Corvette | 2014-2019 | Stingray |
| Chevrolet Silverado 1500 | 2014-2022 | LT |
| Chevrolet Silverado 1500 | 2014-2022 | WT |
| Chevrolet Silverado 1500 | 2014, 2016 | Base |
| Chevrolet Silverado 1500 | 2014-2022 | LTZ |
| Chevrolet Silverado 1500 | 2014-2022 | High Country |
| Chevrolet Silverado 1500 | 2015-2021 | SSV |
| Chevrolet Silverado 1500 | 2015-2018 | LS |
| Chevrolet Silverado 1500 | 2016-2022 | Custom |
| Chevrolet Silverado 1500 | 2019-2020 | WT Cab Regular |
| Chevrolet Silverado 1500 | 2019-2020 | WT Doble Cabina |
| Chevrolet Silverado 1500 | 2019-2022 | RST |
| Chevrolet Silverado 1500 | 2019-2022 | LT Trail Boss |
| Chevrolet Silverado 1500 | 2019-2022 | Custom Trail Boss |
| Chevrolet Silverado 1500 | 2022 | ZR2 |
| Chevrolet Silverado 1500 LD | 2019 | LT |
| Chevrolet Silverado 1500 LD | 2019 | WT |
| Chevrolet Silverado 1500 LD | 2019 | Custom |
| Chevrolet Silverado 1500 LTD | 2022 | Custom |
| Chevrolet Silverado 1500 LTD | 2022 | WT |
| Chevrolet Silverado 1500 LTD | 2022 | LTZ |
| Chevrolet Silverado 1500 LTD | 2022 | LT |
| Chevrolet Silverado 1500 LTD | 2022 | High Country |
| Chevrolet Silverado 1500 LTD | 2022 | SSV |
| Chevrolet Silverado 1500 LTD | 2022 | LT Trail Boss |
| Chevrolet Silverado 1500 LTD | 2022 | RST |
| Chevrolet Silverado 1500 LTD | 2022 | Custom Trail Boss |
| Chevrolet Silverado 1500 Nueva | 2022 | Base |
| Chevrolet Silverado 1500 Nueva | 2022 | Custom |
| Chevrolet Suburban | 2015-2016 | LTZ |
| Chevrolet Suburban | 2015-2022 | LS |
| Chevrolet Suburban | 2015-2022 | LT |
| Chevrolet Suburban | 2016-2019 | HD |
| Chevrolet Suburban | 2017-2022 | Premier |
| Chevrolet Suburban | 2021-2022 | RST |
| Chevrolet Suburban | 2021-2022 | High Country |
| Chevrolet Suburban | 2021-2022 | Z71 |
| Chevrolet Suburban | 2021-2022 | Commercial |
| Chevrolet Suburban 3500 HD | 2016-2019 | LS |
| Chevrolet Suburban 3500 HD | 2016-2019 | LT |
| Chevrolet Tahoe | 2015-2022 | LT |
| Chevrolet Tahoe | 2015-2022 | LS |
| Chevrolet Tahoe | 2015-2022 | SSV |
| Chevrolet Tahoe | 2015-2016 | LTZ |
| Chevrolet Tahoe | 2015-2022 | PPV |
| Chevrolet Tahoe | 2016-2017, 2021-2022 | Z71 |
| Chevrolet Tahoe | 2017-2022 | Premier |
| Chevrolet Tahoe | 2017-2020 | Police |
| Chevrolet Tahoe | 2018 | Midnight Edition |
| Chevrolet Tahoe | 2021-2022 | Commercial |
| Chevrolet Tahoe | 2021-2022 | High Country |
| Chevrolet Tahoe | 2021-2022 | RST |
| GMC Sierra | 2014-2022 | Denali |
| GMC Sierra | 2014-2015 | SLT |
| GMC Sierra | 2014-2018 | All Terrain |
| GMC Sierra | 2014-2019, 2021-2022 | SLE |
| GMC Sierra | 2019-2022 | AT4 |
| GMC Sierra | 2020 | Regular |
| GMC Sierra | 2020 | AT4 CarbonPro |
| GMC Sierra 1500 | 2014-2021 | Base |
| GMC Sierra 1500 | 2014-2022 | Denali |
| GMC Sierra 1500 | 2014-2022 | SLT |
| GMC Sierra 1500 | 2014-2022 | SLE |
| GMC Sierra 1500 | 2019-2022 | AT4 |
| GMC Sierra 1500 | 2019-2022 | Elevation |
| GMC Sierra 1500 | 2022 | AT4X |
| GMC Sierra 1500 | 2022 | Denali Ultimate |
| GMC Sierra 1500 | 2022 | Pro |
| GMC Sierra 1500 Limited | 2019, 2022 | SLE |
| GMC Sierra 1500 Limited | 2019 | Base |
| GMC Sierra 1500 Limited | 2022 | SLT |
| GMC Sierra 1500 Limited | 2022 | AT4 |
| GMC Sierra 1500 Limited | 2022 | Denali |
| GMC Sierra 1500 Limited | 2022 | Elevation |
| GMC Sierra 1500 Limited | 2022 | Pro |
| GMC Sierra 2500 HD | 2014-2022 | SLE |
| GMC Sierra 2500 HD | 2014 | WT |
| GMC Sierra 2500 HD | 2014-2022 | Denali |
| GMC Sierra 2500 HD | 2014-2022 | SLT |
| GMC Sierra 2500 HD | 2015-2021 | Base |
| GMC Sierra 2500 HD | 2020-2022 | AT4 |
| GMC Sierra 2500 HD | 2022 | Pro |
| GMC Sierra 3500 HD | 2014-2022 | Denali |
| GMC Sierra 3500 HD | 2014 | WT |
| GMC Sierra 3500 HD | 2014-2022 | SLT |
| GMC Sierra 3500 HD | 2014-2022 | SLE |
| GMC Sierra 3500 HD | 2015-2021 | Base |
| GMC Sierra 3500 HD | 2020-2022 | AT4 |
| GMC Sierra 3500 HD | 2022 | Pro |
| GMC Sierra Nueva | 2022 | SLE |
| GMC Sierra Nueva | 2022 | Denali |
| GMC Sierra Nueva | 2022 | Denali Ultimate |
| GMC Sierra Nueva | 2022 | AT4 |
| GMC Yukon | 2015-2022 | SLE |
| GMC Yukon | 2015-2022 | Denali |
| GMC Yukon | 2015-2022 | SLT |
| GMC Yukon | 2021-2022 | AT4 |
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.
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