VEGE DFKPCNG 5.4L 330ci CNG Dedicated Long Block Remanufactured Crate Engine

Description

Power municipal transport fleets with the VEGE DFKPCNG Remanufactured Crate Engine 5.4L 330ci long block package. Tailored for dedicated compressed natural gas operation, this modular V8 outputs 245 horsepower at 4,500 RPM and 335 lb-ft torque at 2,500 RPM. Hardened induction valve seats and severe-duty stellite-faced valves withstand dry gaseous fuel combustion, eliminating seat recession across municipal transit buses and commercial fleet delivery chassis.

A deep-skirt cast iron engine block features cross-bolted six-bolt main bearing caps supporting a heavy-duty balanced nodular iron crankshaft. Forged powder-metal connecting rods secure high-compression hypereutectic pistons across a 3.552-inch bore and 4.165-inch stroke. Compression ratio measures 10.5:1 to maximize thermal efficiency on dry gaseous natural gas. The stamped steel rear-sump pan holds 6.0 quarts of oil, bringing dry weight to 540 lbs.

Key Features of VEGE DFKPCNG

Choose to buy VEGE DFKPCNG crate engine units to maintain low-emission municipal fleets and airport ground support vehicles. Factory remanufactured alternative fuel specifications eliminate valve seat recession, keeping high-hour fleet equipment operating on schedule without costly mechanical repairs.

• Hardened stellite valve face inserts withstand dry combustion heat associated with alternative fuels.
• 44.5 mm intake valves optimize gas charge delivery to maximize low-RPM towing muscle.
• DFKPCNG dedicated packages include high-grade bronze valve guides that eliminate stem seizure.
• Line-honed main bearing saddles reestablish hydrodynamic oil wedge films under continuous hauling loads.
• Plateau-honed cylinder sleeves promote immediate piston ring bedding without oil migration.
• Single overhead camshaft heads utilize roller rocker followers to reduce internal engine friction.
• Heavy-duty timing chain sets maintain exact camshaft synchronization under erratic fleet driving.

Combustion Chamber Dyno Characteristics

Operating across an engine band from 1,000 to 5,000 RPM, this gaseous fuel V8 generates 245 peak brake horsepower at 4,500 RPM alongside 335 lb-ft torque at 2,500 RPM. Camshaft duration spans 194 degrees intake at 0.050-inch lift, with 0.480-inch valve lift. Calibrated for dedicated compressed natural gas fuel induction systems. Manifold vacuum holds steady at 19 in-Hg at 600 RPM idle, backed by 45 to 70 PSI hot oil pressure.

Chassis Clearance Transaxle Integration

The bellhousing flange bolts directly to modular Ford 4R100 and 4R70W automatic transmissions without custom adapters. Zero-balance internal design permits use of standard flexplates and front harmonic dampers. The rear-sump pan clears heavy truck front twin I-beam crossmembers, providing ample clearance for brake booster lines, starter wiring, and exhaust downpipes.

Maintenance Protocols Operating Boundaries

Pre-lube the engine with an external oil tank before starting to protect overhead cam bearing surfaces. Charge the crankcase with low-ash natural gas synthetic blend oil and bleed the cooling circuit. This engine unit is not engineered for liquid pump gasoline, high-boost superchargers over 6 PSI, or continuous marine pulling duty.

• Discard break-in motor oil and install a replacement oil filter after the first 50 miles.
• Conduct regular oil changes and check valve gear noise every 3,000 miles of equipment operation.
• Flush engine coolant and inspect radiator fins every 12 months for steady heat rejection.

Factory Warranty Crate Contents

Includes a 36-Month / 100,000-Mile commercial warranty covering remanufactured components and machining. Crate packaging contains the remanufactured long block, complete oil pan, reconditioned cylinder heads, pushrods, timing cover, balance verification report, and an instructional startup guide.