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Chev Holden HSV LS9 Long Block Crate Engine GM12624262 - GM Performance

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SKU: GM12624262
Regular price $19,593.75
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This GM Performance engine assembly is identified by SKU GM12624262. Listed applications include Chevrolet, Holden, HSV.

Application and specification: Chev Holden HSV LS9 Long Block Crate Engine

Out of stock.

Product details

  • Part: Engine Assemblies
  • Brand: GM Performance
  • SKU: GM12624262
  • Manufacturer part number: 12624262
  • Specification: Performance

Specifications and supplied details

  • Chev LS9 Long Block Crate Engine
  • Horsepower rating 638 hp
  • Torque rating 604 ft.lbs.
  • A factory foundation for boost
  • As the foundation for the supercharged engine that powered the 2009-13 Corvette ZR1 and the 2017 HSV GTSR W1, the LS9 is a long block built for boost. Delivered without the supercharger or front end accessory drive system, allowing the builder to finish the engine with the power adder of his or her choice. It is rated for 12 lbs of boost.
  • The assembly includes a forged rotating assembly (including lightweight titanium connecting rods), rotocast aluminum cylinder heads with titanium intake valves and stainless hollow exhaust valves, multiple engine sensors and six ignition coils. It also includes a dry-sump oil pan, which requires the builder to add an external oil tank.
  • Whether you use a supercharger or turbo system, the LS9 long block is the assembled foundation developed for the boost you want to make. It made the C6 ZR1 and HSV GTSR W1 legends in their own time. There's no telling where its performance potential will take your project.
  • Installation Notes
  • Assembly does not include any electronics
  • Includes dry-sump oil pan and requires external cil tank (not included). Oil pan change required for wet-sump oiling
  • Includes 9-bolt crankshaft flange that may require adapter for use with some transmissions
  • Induction system and front end accessory drive system not included
  • Not intended for marine applications
  • Tech Specs
  • Part Number: 12624262
  • Engine Type: LS Series Gen IV Small Block V8
  • Displacement (cu. in.): 376 (6:21L)
  • Bore x Stroke (in.): 4.065 x 3.622 (103.25 x 92 mm)
  • Block: Cast aluminium with six bolt, cross bolted main caps
  • Crankshaft (P/N 12641693): Forged steel with nine bolt flange
  • Connecting Rods (P/N 12624231): Forged titanium
  • Pistons (P/N 19180414): Forged aluminium
  • Camshaft Type (P/N 12638427): Hydraulic roller
  • Valve Lift (in.): .562" intake/.558" exhaust
  • Camshaft Duration (@050 in.): 211° intake/230° exhaust
  • Cylinder Heads (P/N 12621774): Aluminium 192-style ports "as cast" with 68cc chambers
  • Valve Size (in.): 2.160" titanium intake/1.590"; hollow, sodium filled exhaust
  • Compression Ratio: 9.1:1
  • Rocker Arms (P/N 12696105 int): Investment cast, roller trunnion
  • Rocker Arms (P/N 12681275 exh): Investment cast, roller trunnion
  • Rocker Arm Ratio: 1.7:1
  • Recommended Fuel: Premium pump
  • Maximum Recommended rpm: 6600
  • Reluctor Wheel: 58X
  • Balanced: Internal

Compatible applications

Makes: Chevrolet; Holden; HSV

Compatible engines

  • LS1 LS2 LS3 LS7 LS9 LSA L76 L77 L98 LSX LS Performance V8
  • LS9 6.2 Litre Supercharged 6.2L V8

Compatible models

  • Corvette ZR1
  • GTSR W1

Check the part number and listed specifications against your application before ordering.

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