LS3 495hp Crate Engine - Long Block

LS3 Crate Engine by Chevrolet Performance

495hp / 475 ftlbs

• Specifications:
  Power: 495 HP @ 5750 RPM, 475 ft. lbs. of torque @ 4500 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: .525” Intake / .525” exhaust
  Cam Duration @ .050”: 219 deg. Intake / 228 deg. Exhaust
  Lobe Separation: 112 Degree
  Cylinder Heads: Aluminum L92 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
  • Corvette Harmonic Balancer
  • Front timing cover with cam sensor
  • Oil Filter
  • Passenger Side RH Oil Dipstick and Tube (not included)
  Note: Does not include oil dipstick tube, oil dipstick, or steam crossover tube

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.

The hot new small block V8 in the GM lineup is the hyper-aggressive LS3. It offers a high-revving 376-inch combination that represents generations of small block V8 development and engineering. Not only is the LS3 an amazing engine in its stock configuration, but with those high-flowing rectangular port cylinder heads, the LS3 is loaded with potential. To tap into this potential, the engineers at Chevrolet Performance Parts offer you the LS 376/480 - an LS3 with an upgraded camshaft that ups power by a whopping 50 horsepower!

The LS 376/480 comes with the same great features as the LS3 crate engine. The bottom end includes a 6-bolt aluminum block, nodular crank, high performance rods, and 10.7:1 pistons. The heads are high-flowing rectangular-port units that share their design with the amazing LS7. The same EFI intake manifold feeds the hungry engine, while 1.7:1 roller rockers work with the upgraded camshaft.

The Chevrolet Performance Parts engineers picked the LS Hot Cam to take the LS3 to the next level. This cam specs out with .525-inch intake and exhaust valve lift. Duration (@ .050 inches) is 219 intake and 228 exhaust. This cam allows for a dramatic increase in power across the power band while still maintaining good street manners. The engine will idle and cruise just like an LS3, but the power increase is there whenever you need it.

With all of the same great components as the LS3, but with an additional 50 horsepower, the new LS 376/480 is ready, willing, and able to answer your call for a new LS crate engine.

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.

Don't see the crate engine you want? Give us a call! (316-800-6959)