OEM LSX 454

BUILT WITH
BIG-BLOCK POWER

7.4L LSX 454 Small-Block V-8 Engine front side view
Horsepower:  495-505 hp (369-kW-377 kW) @ 5400 rpm
Torque:  500-515 lb-ft (678 Nm- 698 Nm) @ 4400 rpm
Cylinders:  8
Fuel Type:  PREMIUM GASOLINE RECOMMENDED

OEM LSX 454 Features
& Specifications

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 V8 Small-Block
DISPLACEMENT: 7400 cc (454 ci)
ENGINE ORIENTATION: NA
COMPRESSION RATIO: 10.0:1
VALVE CONFIGURATION: Overhead valves
VALVES PER CYLINDER: Two
VALVE LIFTERS: Hydraulic roller
FIRING ORDER: 1-8-7-2-6-5-4-3
BORE X STROKE: 4.185 x 4.125in. (106.3 x 104.8 mm)
FUEL SYSTEM: PFI
FUEL TYPE: Premium recommended
MAXIMUM ENGINE SPEED: 5400 RPM
APPLICATIONS: OEM TEST UNIT*
HORSEPOWER: 495-505 hp (369-kW-377 kW) @ 5400 rpm
TORQUE: 500-515 lb-ft (678 Nm- 698 Nm) @ 4400 rpm
BLOCK: LSX Cast Iron
CYLINDER HEAD: Cast Aluminum
INTAKE MANIFOLD: Composite PFI – L96
EXHAUST MANIFOLD: NA
MAIN BEARING CAPS MATERIAL: Steel
CRANKSHAFT: Forged Steel
CAMSHAFT: Steel
CONNECTING RODS: 4340 Forged
*Actual power levels may vary depending on OEM calibration and application.

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This contact form is intended for current and prospective U.S. and international business customers in search of GM engine and/or transmission solutions. If you are looking for parts, service, or GM vehicle support, please click here.

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