LSX454 7.4L Crate Engine

Marsoni

M251S

$5570.50

Get it in 3 business days with 1 day shipping. Friday, May 29

LSX454 7.4L Crate EngineLSX 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:

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Called around for quotes to get them replaced and everyone was quoting over $2k just for bellows. Figured I’d give it a try. The rubber is good quality and feels soft. Time will tell but this is an easy job if you’re mechanically inclined. Make sure you replace the plastic water pickup fitting while you’re at it. Found mine to be cracked on disassembly and had to wait for a new one. Should be a easy 3-4 hour job if your not doing the bearing and only doing bellows

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Reviewed in the United States on August 26, 2024

Verified Purchase

Ben

Lake Worth, US

★★★★★ 3

Just ok

Qualities OK, but for Marine applications might want better

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Reviewed in the United States on August 3, 2025

Verified Purchase

Barbara S.