LSX454 7.4L Crate Engine

LSX 454 Crate Engine by Chevrolet Performance

627hp / 586 ft lbs

• Power: 627 HP @ 6300 RPM, 586 ft. lbs. of torque @ 5100 RPM
  Displacement: 454 CID, 7.4L
  Bore x Stroke: 4.185” x 4.125”
  Compression Ratio: 11.0:1
  Recommended Fuel: 92 Octane
  Block: LSX Cast Iron with 6 bolt cross bolted main caps
  Crankshaft: 4340 Forged Steel, with 8 bolt flange
  Connecting Rods: 4340 Forged Steel
  Pistons: Forged Aluminum
  Camshaft: Steel Hydraulic Roller Tappet
  Cam Lift: .635” Intake / .635” exhaust
  Cam Duration @ .050”: 236 deg. Intake / 246 deg. Exhaust
  Lobe Separation: 110 Deg
  Cylinder Heads: Aluminum LSX LS7 Rectangular style ports
  Combustion Chamber: 70cc
  Valves: 2.200” Intake/ 1.610” Exhaust
  Rocker Arms: Cast Roller Trunion, 1.8:1 Ratio
  Balance: Internal
  Reluctor: 58X
  Maximum GM Recommended RPM: 6500
  Engine Includes:
  • Fully GM assembled long block
  • Harmonic Balancer
  • Front timing cover
  Warranty:
  General Motors limited 2 year / 50,000 mile parts & labor warranty. Click on Document tab above for full details.

An engine with 454 cubic inches will always be associated with higher performance Chevys, and that tradition continues with the all new LSX 454 crate engine. We started with the new LSX bowtie block, stuffed it with an all-forged, super tough rotating assembly, and bolted on a pair of our new deep breathing LSX six-bolt cylinder heads.

The new LSX six bolt cylinder heads are based on the race-derived LS7 heads that help deliver more than 500 horsepower in the Corvette Z06. They enable tremendous low end torque and great high RPM power. The LSX 454 is delivered in long block form. It also comes dressed with great looking, all new orange powder-coated valve covers with 'LSX 454" logos engraved and painted in black.

Note: Oil pan and oil pump pickup are not included. LSX valve covers do not have coil mount provisions, coils will need to be relocated

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)