VEGE Remanufactured DF74 4.9L 300ci Multi Purpose Long Block Engine

Description

Camshaft fiber timing gear tooth stripping and side pushrod cover seepage vanish once fleet mechanics choose the VEGE Remanufactured DF74 4.9L Long Block Engine. Outputting 150HP from its 300ci 6-Cylinder commercial long block repower format, this unit powers commercial postal delivery vans. Installers must confirm camshaft gear backlash against the crankshaft drive gear before installing the stamped front timing cover.

Constructed from high-tensile ASTM A48 Class 35 gray iron, the deep-skirt crankcase provides exceptional structural rigidity. The VEGE engine core incorporates induction-hardened nodular iron crankshaft journals and stellite exhaust valves. Cranking starter demand requires 12V 165A. Dry unrigged mass measures 515 lbs inside a 34in length, 22in width, 28in height base envelope holding 6.0 quarts oil.

Key Features of VEGE DF74

Commercial contractors buy VEGE DF74 commercial long block units to maintain dependable field power across harsh route environments. Every production run enforces certified industrial engine rebuild quality tolerances.

• Cast nodular iron crankshaft features micro-polished journal surfaces with 0.0003in TIR runout tolerance.
• High-strength ductile iron camshaft timing gears replace failure-prone OEM phenolic fiber gears.
• Centrifugally cast iron cylinder walls receive fine diamond plateau honing for long ring life.
• CNC milled deck surfaces ensure 0.0002in flatness to stop high-pressure cylinder head fire-ring blowby.
• High-volume internal oil pump maintains 50 PSI line pressure across demanding fleet highway duty.
• DF74 commercial core architecture incorporates reinforced main bearing web bulkheads for crankcase rigidity.
• Tri-metal copper-lead bearings establish 0.0015in running clearance to protect crank journals from wear.

Dynamic Bench Load Thermal Boundaries

Dynamometer load trials verify 150 continuous BHP alongside 260 ft-lbs torque output at 3000 RPM continuous operational rating. Galley pressure maintains 52 PSI at 195°F oil sump temperature, while exhaust gas temp levels off at 1180°F during dyno load. Bench sensors record 175 PSI compression across all six cylinders within 3% balance. Crankshaft runout checks at 0.0003in TIR on the DF74 long block engine.

Field Service Directives Maintenance Rules

Throttle spool return resistance measures 5 lbs pull effort on the linkage bracket assembly. This powertrain is NOT manufactured for marine salt-water inboard applications or light front-wheel-drive passenger car conversions. Plant technicians must execute these scheduled service steps without exception.

• Drain break-in engine oil reservoir and replace oil filter at 500 miles or 30 hours.
• Set hydraulic lifter preload depth between 0.040in and 0.050in before sealing valve covers.
• Check exhaust manifold stud nuts for proper clamping tension after the initial run cycle.

Warranty Statement Wood Crate Inventory

Remanufacturing protocols follow strict VEGE assembly standard specifications covered by a 3-Year 100,000-mile commercial warranty. The wood freight box contains the remanufactured long block assembly, stamped steel oil pan, front timing cover, stamped valve cover, oil pump pickup tube, and completed dyno test sheet.