LSX 454 Crate Engine by Chevrolet Performance 627hp / 586 ft lbs Power: 627 HP @ 6300 RPM, 586 ft. lbs. of torque @ 5100 RPMDisplacement: 454 CID, 7.4LBore x Stroke: 4.185” x 4.125”Compression Ratio: 11.0:1Recommended Fuel: 92 OctaneBlock: LSX Cast Iron with 6 bolt cross bolted main capsCrankshaft: 4340 Forged Steel, with 8 bolt flangeConnecting Rods: 4340 Forged SteelPistons: Forged AluminumCamshaft: Steel Hydraulic Roller TappetCam Lift: .635” Intake / .635” exhaustCam Duration @ .050”: 236 deg. Intake / 246 deg. ExhaustLobe Separation: 110 DegCylinder Heads: Aluminum LSX LS7 Rectangular style portsCombustion Chamber: 70ccValves: 2.200” Intake/ 1.610” ExhaustRocker Arms: Cast Roller Trunion, 1.8:1 RatioBalance: InternalReluctor: 58XMaximum GM Recommended RPM: 6500Engine Includes:• Fully GM assembled long block• Harmonic Balancer• Front timing coverWarranty:General Motors limited 2 year / 50,000 mile parts & labor warranty. Click on Document tab above for full details. *FREIGHT charges NOT included 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)