Texas Speed & Performance TSP-427LSxLB: The Heart of Your Performance Build

For those who demand power and reliability, the TSP-427LSxLB from Texas Speed & Performance is a game-changer. This 427 C.I.D. LSx short-block uses a brand-new GM Performance Parts LSx iron block, ensuring a solid foundation for your performance aspirations. With a standard configuration featuring a 4.00" stroke crankshaft, you have the option of a 24X or 58X reluctor wheel to match your specific setup.

Engine Components and Customization

Your TSP 427 LSx comes fully assembled, but the customization options are where the magic happens. Choose from high-performance piston sets from Wiseco, Diamond Racing, or Mahle, all crafted from 2618 forgings with lowered ring lands to support nitrous and boost applications. This engine is designed for serious performance, utilizing a 4.125" or 4.127" bore piston set, with custom builds available to meet your unique needs.

Compatibility and Installation

For those looking to install this engine in an LS1 vehicle, our optional conversion package includes:

• LS2 timing cover with camshaft position sensor
• LS2 valley cover
• LS2 lifter trays
• LS2-specific timing set
• Plug-n-play harness extensions for camshaft position and knock sensors

This package is essential for a seamless installation, ensuring that your new powerhouse integrates perfectly with your existing setup.

Strength and Durability

For those planning to push their limits, consider upgrading to 1/2" head studs, which come with ARP hardware and necessary machine work. This upgrade is crucial for high-powered applications, especially if you're considering 400+ shots of nitrous or 25+ psi of boost. The standard long-block assembly features PRC cathedral-port 247cc cylinder heads, perfect for maintaining the integrity of your cathedral-port design.

Turn-Key Solutions and Additional Features

We also offer turn-key long-blocks that include your choice of oil pan, intake manifold, throttle body, and more. Our engines come with:

• Precision Race Components 247cc 6-Bolt Cylinder Heads
• Your choice of TSP camshaft
• Johnson Hydraulic-Roller Lifter Set with Tie Bars
• TSP Hardened Chromemoly Pushrods
• ARP Head Stud Kit for 6-Bolt Cylinder Heads
• Cometic MLS 6-Bolt Cylinder Head Gaskets

Fitment

This engine is compatible with a wide range of vehicles:

• 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)

Important Notes

• Competition Use Only, Not Legal for Road Use
• Add 6-8 Week Lead Time To All LSx/Dart Based Builds Due To Block Availability

Customer Feedback

F-Body owners have reported, “After installing the TSP-427LSxLB in my 2001 Camaro, the power increase was incredible. It fit perfectly and the sound was just what I was looking for!” This engine is designed for those who want to take their ride to the next level.

With the TSP 427 LSx, you're not just upgrading; you're investing in a powerhouse that will deliver performance and reliability on the street or the track. Reach out to us for a customized quote and let’s get your build started!