7.4L V-8 LSX 454

BUILT WITH
BIG-BLOCK POWER

horsepower icon
Horsepower:  495-505 hp (369-kW-377 kW) @ 5400 rpm
torque icon
Torque:  500-515 lb-ft (678 Nm- 698 Nm) @ 4400 rpm
engine icon
Cylinders:  8
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Fuel Type:  PREMIUM GASOLINE RECOMMENDED
7.4L LSX Small-block V8 Engine from GM Powertrain

7.4L V-8 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 V-8 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: Port Fuel Injection
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.