Description
TSP 376 CID Sleeved Gen 5 LT1/LT4 Short-Block, Stock Stroke
The Texas Speed & Performance 376 CID Sleeved Gen 5 LT1/LT4 Short-Block is built using a NEW Gen 5 aluminum block fitted with Darton dry sleeves for maximum strength and durability. All blocks are fully machined and assembled in-house, making this an ideal foundation for high-performance and boosted LT builds.
Key Features:
- NEW Darton sleeved Gen 5 aluminum block (thicker, stronger than factory sleeves)
- Designed for LT1/LT4 stock-stroke combinations
- Choice of Wiseco or Mahle2618 forged pistons
- Lowered ring lands for nitrous or boost capability
- Oil and coolant plugs pre-installed
Important Notes:
- We do not recommend exceeding a 4.125″ bore for power-adder applications
- Custom piston volumes and bore sizes are available (additional lead time may apply)
- Multiple connecting rod and crankshaft options offered for custom builds
All TSP engines include 12 quarts of break-in oil at no additional cost to ensure proper startup protection and ring seal.
Note: Custom configurations are available. Contact Texas Speed for an itemized quote, piston options, and current build time.
This assembly is built to order. Choose your crankshaft, connecting rods and pistons above — the price updates as you select.







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