LS3 Crate Engine by Chevrolet Performance

430hp / 424 ftlbs

• Specifications:
  Power: 430 HP @ 5900 RPM, 424 ft. lbs. of torque @ 4600 RPM
  Displacement: 376 CID, 6.2L
  Bore x Stroke: 4.060 x 3.620
  Compression Ratio: 10.7:1
  Recommended Fuel: 92 Octane
  Block: Cast Aluminum with 6 bolt cross bolted main caps
  Crankshaft: Nodular Iron
  Connecting Rods: Powdered Metal Steel
  Pistons: Hypereutectic Aluminum
  Camshaft: Steel Hydraulic Roller Tappet
  Cam Lift: .551 Intake / .522 exhaust
  Cam Duration @ .050 : 204 deg. Intake / 211 deg. Exhaust
  Lobe Separation: N/A
  Cylinder Heads: Aluminum L92/LS3 style ports
  Combustion Chamber: 68cc
  Valves: 2.165 Intake/ 1.590 Exhaust
  Rocker Arms: Cast Roller Trunnion, 1.7:1 Ratio
  Balance: Internal
  Reluctor: 58X
  Maximum GM Recommended RPM: 6600
  GM Recommended Torque Converter Stall 2400-2800

  Engine Includes:
  Fully GM assembled long block
  Oil pump, pick-up and Camaro oil pan (12628771)
  Corvette Harmonic Balancer
  Front timing cover with cam sensor
  Oil Filter
  Passenger Side RH Oil Dipstick and Tube (not included)

*freight charges not included

Chevrolet Performance LS3

Starting with the '08 Corvette, the world was first introduced to GM's latest small block V8 creation the 6.2-liter LS3. A continuation of the industry leading V8 engines from GM Powertrain, the LS3 kicks out 430 horsepower and 424 lb.-ft. of torque. (In the Corvette, those numbers go to 436 hp and 428 lb.-ft. of torque with the optional dual mode exhaust system.) It's a brute of a small block with 376 ready cubes at your beckon call.

 

The LS series of engines from GM Powertrain have broken new ground for efficiency and performance from a pushrod platform engine. The LS3 continues the engineering breakthroughs with revised cylinder heads featuring rectangle ports borrowed from the vaunted LS7. The heads feature 63 cc combustion chambers, 2.16-inch intake valves, and 1.59-inch exhaust valves. The camshaft features an aggressive .551-inches of lift on the intake side with less overlap (than the LS2) for even greater airflow and power. Rocker arms with a 1.7:1 ratio sit on top of the heads.

 

In the bottom end, the aluminum 6-bolts/main block features 4.06-inch bores and 3.62-inch stroke. A nodular iron crankshaft, powdered metal rods, and aluminum pistons (10.7:1 compression ratio) round out a rev-happy short block. Red line for the LS3 comes at 6600 rpm, and you will get there very quickly.

 

With a high-tech GM foundation, aluminum block, and high flowing rectangular-port heads, the LS3 is the new standard in the small block world. The LS3 helps power the new Corvette to a top speed of 190 mph. What will it power you to?

 

Warranty:

General Motors limited 2 year / 50,000 mile parts & labor warranty. Click Here to view or download warranty form.

 

Note: New engines require priming of oiling system prior to initial start up.

 

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