Texas Speed & Performance TSP-QualifierPkg: 427 CID LS3 Off-Road Engine Package

The TSP-QualifierPkg by Texas Speed & Performance is engineered for those who demand serious power and reliability in off-road racing applications. This 427 CID LS3 off-road engine package is meticulously crafted with precision machining using advanced CNC technology, ensuring strict tolerances and optimal performance. Every engine is hand-assembled by specialists with extensive experience in LSx-based and Gen 5 LT engines, guaranteeing a product that meets the highest standards in the industry.

Key Features

• Resleeved GM Aluminum Engine Block with Darton Sleeves for enhanced durability
• Priority Thrust Bearing Oiling system to prevent oil starvation
• ARP Main Stud Kit for improved strength
• Texas Speed & Performance Forged 4340 4.00" Stroke Crankshaft
• Forged 6.125" Super I-Beam Connecting Rods
• CP 4.125" Forged Piston Set with advanced ring design for better sealing
• 11.5:1 Compression Ratio for optimal power output
• Precision Race Components 260cc LS3 Aftermarket Cylinder Heads with TSP Dual Valve Spring Kit
• Custom-Grind Hydraulic-Roller Camshaft: 240/252, .620"/.618", 111 LSA for aggressive performance
• Comprehensive kit including GM LS3 Intake Manifold Assembly, fuel injectors, and throttle body
• Complete GM Sensors setup for 2002 LS1 Camaro/Firebird with 24x Reluctor Wheel
• 12 quarts of break-in oil included for optimal engine health

Installation Notes

This engine package is designed as a drop-in solution, requiring a minimum of a 3,000 RPM stall speed torque converter. It is equipped with a cable-driven throttle body by default, but can be configured for an electronic throttle body for an additional cost. An engine wiring harness and ECM are not included in the standard package but can be added. A base tune is provided if these components are included, though a professional dyno tune is recommended post-installation.

Fitment

• Cadillac CTS-V 2009-2015
• 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

Important Note

This engine package is intended for competition use only and is not legal for road use. Ensure that your setup meets all necessary regulations for your racing events.