627 HP

@ 6300 RPM



586 LB-FT

@5100 RPM

Big-Block performance built from our LSX Small-Block

One of the most legendary engines in muscle-car history was the Chevy 454 Big-Block. With the LSX Bowtie block, Chevrolet Performance engineers were able to build a 21st century 454 with the latest technology — and it requires no more space under the hood than a production LS engine.

The LSX454 is filled with an all-forged, super-tough rotating assembly and features a pair of our new, deep-breathing LSX six-bolt cylinder heads. It also comes dressed with great-looking, orange powder-coated valve covers with engraved LSX454 logos.

We deliver the LSX454 without an intake manifold and other accessories. Use the LSX-LS7 single-plane carbureted intake manifold (P/N 19244033). The LSX454 valve covers do not include provisions for mounting ignition coil brackets.  Aftermarket or custom relocation brackets must be obtained. It also includes an eight-bolt crankshaft flange that may require an adapter for use with some transmissions.

Tech Specs

Part Number: 19332316

Engine Type: LSX-Series Gen-IV Small-Block V-8

Displacement (cu. in.): 454 (7.4L)

Bore x Stroke (in.): 4.185 x 4.125 (106.3 x 104.8 mm)

Block (P/N 19244057): LSX cast-iron with six-bolt, cross-bolted main caps

Crankshaft (P/N 19244018): 4340 forged steel with eight-bolt flange

Connecting Rods (P/N 19166964): 4340 forged steel

Pistons (P/N 19166958): Forged aluminum

Camshaft Type (P/N 19166972): Hydraulic roller

Valve Lift (in.): 0.648 intake / 0.648 exhaust

Camshaft Duration (@0.050 in.): 236° intake / 246° exhaust

Cylinder Heads (P/N 19201806): Aluminum LSX-LS7 port; with “as cast” 70-cc chambers

Valve Size (in.): 2.200 titanium intake / 1.610 hollow, sodium-filled exhaust

Compression Ratio: 11.0:1

Rocker Arms (P/N 12579615 int): Investment-cast, roll trunnion

Rocker Arms (P/N 12579617 exh): Investment-cast, roll trunnion

Rocker Arm Ratio: 1.8:1

Recommended Fuel: 92 octane

Maximum Recommended rpm: 6500

Reluctor Wheel: 58X

Balanced: Internal

Installation Guides

Find everything from the vital data about your engine’s capabilities to how to install it into your build.

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Unless specifically noted to the contrary herein, vehicles equipped with Chevrolet Performance Parts may not meet Federal Motor Vehicle Safety Standards and emissions regulations and should not be operated on public roads. Chevrolet Performance customers are responsible for ensuring their use of Chevrolet Performance complies with applicable federal, state, and local laws, regulations, and ordinances. Many parts intended for racing or other “off-highway” use are not designed or tested for crashworthiness or to meet the safety needs of the motoring public, and may adversely affect the original intended performance or handling characteristics of the vehicle. These parts are designed and intended to be used with experts supervising their installation and use, to help assure the proper and safe operation of the vehicle.

  • The Manufacturer's Suggested Retail Price excludes tax, shipping and installation. Individual retailer pricing may vary. Please see your local dealer or retailer for details.

  • The Manufacturer's Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees and optional equipment. Click here to see all Chevrolet vehicles' destination freight charges.