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SLP Crate Engine Assembly, ZL402 LS2 Aluminum Long Block w/L92 Drive by Wire Pkg. w/ 51016 (Hign Compression)
SLP-12527M
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ZL402 LS2 Aluminum Long Block w/L92 Drive by Wire Pkg. w/ 51016 (Hign Compression) SLP Crate-Engine-Assembly
Manufacturer: SLP Performance
Model Detail: GM LS2 6.0 liter GM block
Application: GTO's, Corvettes, Camaro Firebirds, GM Trucks

Crate-Engine-Assembly, ZL402 LS2 Aluminum Long Block w/L92 Drive by Wire Pkg. w/ 51016 (Hign Compression)

SLP has taken our already great performing ZL402 and made it even better! We've included and installed the SLP/L92 64cc cylinder-head-and-L76 manifold package with a SLP 51016 camshaft, SLP double-row timing chain, SLP Heavy-duty oil pump, new GM lifters and lifter guides, ARP cylinder head studs and MLS head gaskets.

Our ZL402 is built around a new GM LS2 6.0 liter GM block, a 4.00 inch 4340 forged Callies steel crank, and 4.00 inch 2618 forged SLP/Manley aluminum pistons and 4340 forged /Manley H-Beam Rods.

The advantage of this approach is the new ZL402 long-block ships to you already assembled eliminating the guesswork associated with building an engine. (L76 manifold included, not installed).

Although designed primarily for use in late-model GTOs and Corvettes, the ZL402 also makes a great choice for Camaro/Firebirds, street rods, muscle cars, and trucks. Best of all, it is sold outright, eliminating the shipping hassles and expenses of core returns.

You will not find a higher-quality, better value LS2 stroker motor anywhere!

NOTE: While placing your order, please specify model year that the 402 will be installed in, and what style reluctor wheel is required. SLPs harmonic balancer/under-drive pulley is required for proper installation (or an equivalent pulley that is properly keyed) a stock balancer/pulley will NOT fit.

SLP/L92 ZL402 Aluminum Long Block Includes the following:
  • Built entirely from brand new parts
  • Sold outright, no cores required!
  • GM LS2 aluminum 6.0 liter block
  • 402-CID displacement
  • 4.000 inch Callies 4340 forged steel crankshaft, balanced to rotating assembly
  • 4.000 inch SLP/Manley 2618 forged alloy pistons with -6.00cc dish (includes new Total Seal rings and full-float pins)
  • 6.125 inch SLP/Manley 4340 forged steel H-beam rods
  • Includes new, factory-installed cam bearings; Clevite rod and main bearings
  • SLP/Manley 4130 forged chrome-moly pushrods
  • SLP 51016 Camshaft .591/.600-inch lift 224/228 duration @ 0.50 113 degree LSA
  • SLP/L92 Cylinder Heads
  • L92 offset GM rocker arms (qty. 8)
  • L76 GM Intake Manifold w/stock LS2 throttle body and 39lb/hr GM injectors (included, not installed)
  • SLP 4340 Double-Row Timing Chain
  • SLP 55001 Heavy-Duty Oil Pump
  • New GM Lifters and Lifter Guides
  • ARP Cylinder head studs
  • MLS Head Gaskets
  • 11:1 compression ratio (nominal)
  • Designed for naturally aspirated applications
  • Capable of supporting up to 700+ HP
  • Meticulously assembled by SLP to OEM tolerances and specifications.
  • Pans, plates, and covers not included.
  • ZL402 OEM-quality fender badges (pair).
  • SLP offers a 1 year warranty (workmanship)


NOTE: SLP STRONGLY recommends that final assembly and installation be performed by an experienced, professional mechanic. Assembly/installation instructions are neither included nor available with this part. Not compatible with pre-2005 GM knock sensors!

This item must be prepaid with a certified check or money order.
Please email Best Performance Auto Parts for more information and a shipping quote.
All engines are shipped in a Heavy-Duty crate, $100.00 additional charge applies.




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