GM Vortec 8100 Specifications
Type: 90° 8.1L Standard V8
Displacement: 496 cid (8128 cc)
Compression Ratio: 9.1:1
Valve Configuration: Pushrod Actuated, Overhead Canted Valves (2 valves per cylinder)
Valve Lifters: Hydraulic Roller
Bore x Stroke: 4.25 x 4.37 in (107.95 x 111.00 mm)
Main Bearing Caps: 4-Bolt Cast Iron
Intake Manifold: Factory-installed PFI Manifold
Firing Order: 1-8-7-2-6-5-4-3
Oil Pan Capacity: 8 qt
Fuel Type: Gasoline (unleaded)
Fuel System: Port Fuel Injection
Engine Rotation: Clockwise (facing front)
Spark Plugs: Platinum tipped (1.5-mm gap)
Emission Controls: Internal PCV oriface system
Paint Protection: Component-Painted
Shipping Weight: 734 lb (333 kg)
Horsepower: 375 hp @ 4600 rpm
Torque: 490 lb-ft @ 3200 rpm
Materials: Block: Cast Iron Cylinder Head: Cast Iron (with exhaust valve seat inserts) Intake Manifold: One-Piece Coated Cast Aluminum Main Bearing Caps: Cast Nodular Iron Crankshaft: Cast Nodular Iron Camshaft: Steel Connecting Rods: Forged Steel 1141 SAE (shot-peened and magnafluxed, with 9-mm diameter connectin rod bolts) Pistons: Hypereutictic Cast Aluminum
Actual power levels may vary depending on OEM calibration and application. Information may vary with application. All specification slisted are based on the latest product informaion available at the time of publication. The right is reserved to make changes at any time without notice.