TSP 454 C.I.D. LSx Short-Block

TSP 454 C.I.D. LSx Short-Block

The Texas Speed & Performance 454 C.I.D. LSx Short-Block is built using a brand-new GM Performance Parts LSx iron block and comes fully assembled for serious high-performance applications. Each short-block features a 4.125″ stroke crankshaft with your choice of 24X or 58X reluctor.

Key Features:

• New GM LSx iron block for maximum strength
• Wiseco 4.185″ -2.8cc pistons (standard)
• 4.185″ bore unless otherwise noted
• Compatible with LS1, LS2, LS3, L92, LS6, and most aftermarket heads
• Oil and coolant plugs installed from the factory

Available Options:

• Optional LS1 conversion package for LS1 vehicle swaps
• Upgrade to 1/2″ ARP head studs (includes machining)
• Dry-sump crankshaft option for 2006+ Corvette Z06 / GS / ZR1 installs

Important Notes:

• Lead Time: Add 6–8 weeks to all LSX/Dart-based builds due to block availability
• Not recommended for extreme boost or large nitrous use (limit nitrous to ~150 HP shot)
• Includes 12 quarts of break-in oil at no extra cost

Note: Custom builds and upgraded rotating assembly options are available. Contact Texas Speed for an itemized quote and application guidance.