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 to accommodate CNG or LPG fuels, and because it’s a big-block, it delivers strong, low-rpm torque.

A tall-deck version of the latest block casting features full-length water jackets, thicker main bearing webs, and four-bolt main caps that make up the 8.0L’s foundation, a long 4.250” stroke helps maximize torque.

8.0L LFI Features & Specifications

8.0L LFI Tech Specs
Type 8.0L Chevy Big-Block V-8
Displacement 488 ci
Compression Ratio 9.9:1 nominal
Valve Train 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 LPG/CNG
Maximum Recommended Engine Speed 4500 rpm
Horsepower 375 hp @ 4200 rpm (Gas)
315 hp @ 4500 rpm (CNG)
Torque: 475 lb-ft @ 3200 rpm (Gas)
390 lb-ft @ 3500 rpm (CNG)
Pistons Hypereutectic alloy
Cylinder Head Fast burn iron
Intake Manifold Stainless steel
Exhaust Manifold Stainless steel
Crankshaft Forged steel
Connecting Rods Forged steel
Damper Cast iron