TSP 387/388 C.I.D. LSx Long-Block

TSP 387/388 C.I.D. LSx Long-Block

ADD 6–8 WEEK LEAD TIME TO ALL LSX/DART BASED BUILDS DUE TO BLOCK AVAILABILITY!!!

The Texas Speed & Performance 387/388 C.I.D. LSx Long-Block is built using a brand-new GMPP LSx cast iron block with a factory 3.622" stroke crankshaft and your choice of 24X or 58X reluctor. This package provides a strong, complete foundation for high-performance street or race builds.

Key Features:

• New GMPP LSx cast iron block
• Factory GM 3.622" stroke crankshaft
• 387 CID uses 4.125" bore pistons / 388 CID uses 4.130" bore
• Choice of Wiseco or Diamond Racing pistons
• Oil and coolant plugs pre-installed

Options & Notes:

• Optional LS1 conversion package available
• Upgrade to 1/2" ARP head studs requires PRC aftermarket cylinder heads
• Custom rotating assembly and build options available

All TSP engines include 12 quarts of break-in oil at no additional cost for proper startup protection and ring seal.

Note: Wiseco pistons support LS1/LS2/LS6/L92/LS3 and most aftermarket heads, while Diamond pistons are intended for LS1/LS2/LS6 applications. Contact Texas Speed for an itemized quote.