PSI 8.1L

GM 8.1L Industrial Engine Power by Power Solutions, Inc.

Feature/Benefits

  • Coil-near-plug ignition includes crankshaft sensor, camshaft sensor, ESC sensors, and eight ignition coils.
  • Cylinder head features high-flow replicated ports and sintered powder metal exhaust valve seat inserts for durability.
  • Industrial torsional damper with integral six-rib pulley to accommodate serpentine accessory drive hardware.
  • Iron exhaust valve seat facing for better valve durability with alternative fuel applications.
  • Platinum tip long-life spark plugs.
  • High torque camshaft with hydraulic roller valve lifters provides maximum performance.
  • Positive Crankcase Ventilation (PCV) system is integral to intake manifold (no valve required).
  • Coated cast aluminum 8-quart oil pan with full baffle and 12-mm drain plugs on port and starboard sides.
  • Industrial external water crossover.
  • Coated, flat top hypereutectic cast aluminum pistons.
  • Engine block quick-connect oil fittings for easy assembly of oil coolers or remote oil systems.

Feature Focus

  • The coil-near-plug ignition system, with both crankshaft sensor and camshaft sensor, is another example of GM Powertrain bringing advanced automotive technology to the industrial engine
    market.

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PSI Offers Turn-Key Certified and Non-Certified Engine Packages

General Data

Type: 90° 8.1L V8
Displacement: 496 cid (8127 cc)
Compression Ratio: 9.1:1
Valve Configuration: Pushrod Actuated Overhead Canted Valves
Manufactured: Tonawanda, New York
Valve Lifters: Hydraulic Roller
Bore X Stroke: 4.25 x 4.37 in (107.95 mm x 111 mm)
Main Bearing Caps: 4-Bolt Cast Iron
Balance Method: Internal
Intake Manifold: Factory-Installed Alternate Fuel Manifold
Fuel Delivery: LPG/NG Mixer
Oil Pan Capacity: 8 qt
Fuel Types: NG / LPG
Engine Rotation: Clockwise (from the front)
Paint Protection: Component Painted
Horsepower:
264 hp @ 3000 rpm (Propane),
240 hp @ 3000 rpm (Natural Gas)
Torque:
462 lb-ft @ 3000 rpm (Propane),
417 lb-ft @ 3000 rpm (Natural Gas)
Shipping Weight: 729 lb (307.49 kg)

Materials

Block: Cast Iron
Cylinder Head: Cast Iron
Intake Manifold: One-Piece Cast Aluminum
Crankshaft: High-Density Nodular Iron
(with undercut and rolled fillets)
Pistons: Hypereutectic Cast Aluminum
Exhaust Seat: Sintered powder metal exhaust valve seat inserts)
Gaskets: Non-Asbesto

Engine Sealing System

One-piece viton rear main seal
One-piece oil pan gasket
Molded rocker cover seal
Composite graphite cylinder head gaskets with stainless steel core.

Sensors

Switch & Sender: Water Temp & Oil Pressure

Fuel System Options

Closed-Loop Fuel System Kit
Dual Fuel
LPG (Mixer, Throttle Body, Fuel Lock, Regulator)
LPG W/Governor (Same As Above w/Elec. Governor)
LPG Carb
NG/LPG Carb Dual Fuel
NG Carb
NG (Mixer, Throttle Body & Air Cleaner)
NG W/Governor (Same As Above w/Elec. Governor)
Three Way Catalyst Available

Correction to SAE J1995. Actual power levels may vary depending on OEM calibration and application.

Information may vary with application. All specifications listed are based on the latest product information available at the time of publication. The right is reserved to make changes at any time without notice.