8.0L V-8 LFI

Brute Strength
with Adaptability

Horsepower:  Dependent on customer’s
intake system used
Torque:  Dependent on customer’s
intake system used
Cylinders:  8
Fuel Type:  CNG
8.0L LFI Big-block V8 Heavy Duty Engine from GM Powertrain

8.0L V-8 LFI Features
& Specifications

When it comes to pulling your car hauler or offshore racing boat, the heavy-duty 8.0L Big-Block does it without breaking a sweat. It's designed for CNG on-highway applications and because it's a Big-Block, it delivers strong, low-rpm torque.

A tall-deck version of the latest block casting, featuring full-length water jackets, thicker main bearing webs, and four-bolt main caps, is the 8.0L’s foundation, and it’s used with a forged-steel crankshaft and forged connecting rods for great strength. A long, 4.250" stroke helps maximize torque. It also features a crank-triggered ignition system, with 4x camshaft and 58x crankshaft reluctor wheels.

Type 8.0L Big-Block V-8
Displacement 488 ci
Compression Ratio 9.9:1 nominal
Valvetrain Fully adjustable
Balanced Internal
Camshaft Type Hydraulic Roller
Firing Order 1 - 8 - 7 - 2 - 6 - 5 - 4 - 3
Bore x Stroke 4.270 x 4.250 in
Fuel Type CNG
Maximum Recommended Engine Speed 4500 rpm
Horsepower Dependent on customer’s intake system used
Torque: Dependent on customer’s intake system used
Pistons Hypereutectic alloy
Cylinder Head Fast burn iron
Intake Manifold Dependent on customer’s intake system used
Exhaust Manifold Dependent on customer’s intake system used
Crankshaft Forged steel
Connecting Rods Forged steel
Damper Cast iron