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The LSX 454 crate engine is a 21st-century upgrade to the legendary Chevy 454 big block race engine. Learn more about dyno specs, installation & more.
- LSX Engine Long Block Specification
This publication is intended to provide information about...
- Compare LSX Engines
See how Chevy Performance LSX Crate Engines compare in...
- LSX Engine Long Block Specification
Our Chevrolet Small Block LSX 454 crate engines offer an impressive 627 horsepower and are equipped with the latest technology. Plus, the Chevy LSX 454 is lighter than its big block predecessor. Find the Chevy LSX 454 at JEGS High Performance!
See how Chevy Performance LSX Crate Engines compare in horsepower, torque & other specifications so you can make the right choice for your project car.
4 maj 2023 · Configuration: 90° V8. Bore x Stroke: 4.25″ x 4.0″. Compression Ratio: 10.25:1, 11.25:1, 8.2:1. Firing Order: 1-8-4-3-6-5-7-2. Engine Weight: ~685 lbs. Max Horsepower: 450 hp @ 5600 rpm. Max Torque: 500 lb-ft @ 3400 rpm. The 454 engine is also known as the Mark IV or Mark IV Rat Motor.
Download Specs. Lighter and more compact than an original Big-Block 454, the LSX 454 is filled with a super-tough rotating assembly and features a pair of our deep-breathing CNC’d ported cylinder heads. type: 7.4L Gen-IV V-8 Small-Block.
This publication is intended to provide information about the LSX long block engine and related components. This manual also describes procedures and modifications that may be useful during the installation.
Chevrolet Performance's new LSX454R crate engine delivers 770 horsepower that will help you stay in front of the competition. More than the most powerful LS engine in our portfolio, it is the most powerful crate engine we’ve ever offered!
