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)

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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