VEGE Remanufactured 858 4.0L 3956cc Car Truck Long Block Engine

Description

Front timing cover seam weeping and secondary chain shoe wear degrade oil pressure on high-mileage work trucks. The VEGE Remanufactured 858 4.0L 3956cc Car Truck Long Block Engine eliminates that mechanical decay across this commercial long block repower. This 6-Cylinder 236HP unit requires oil filter adapter o-ring renewal before final drops into chassis bays.

A356-T6 open-deck cast aluminum houses spiny-lock cast iron liners for maximum bore retention. An induction-hardened forged steel crankshaft drops into four-bolt cross-pinned main bearing caps with aluminum-tin alloy inserts. This VEGE engine core demands a 12V 170A starter draw during cold shop tests. The unit weighs 362 lbs dry, fits a 27in length, 26in width, 28in height envelope, and requires 5.5 quarts of motor oil.

Key Features of VEGE Remanufactured 858

Municipal repair yards buy VEGE Remanufactured 858 Car Truck Long Block Engine assemblies to halt persistent route interruptions. Every industrial engine rebuild passes laser deck flatness scans to stop coolant channel breaches.

• Cylinder bores machine to 3.701in diameter with diamond plateau hone finishes.
• Main journal oil clearance stays at 0.0014in across the five main saddles.
• Coated multi layer steel head gaskets resist high-shear cylinder fire ring loads.
• Upgraded ratcheting timing chain tensioners prevent secondary chain slap on startup.
• Precision stellite exhaust valve faces inhibit seat recession under sustained highway heat.
• This 858 commercial core receives resurfaced cylinder heads flat within 0.0003in.
• Connecting rod assemblies balance within two grams across the whole set.

Dynamometer Load Verification Bench

Controlled brake cell testing verifies that this 858 long block engine develops 236 continuous BHP and 266 ft-lbs of torque at 3800 continuous load RPM. Internal oil gallery pressure locks at 56 PSI while oil sump temp stabilizes at 194°F under full thermal loading. Exhaust gas temp stays below 1280°F during continuous test pulls. Cylinder compression reads between 176 PSI and 184 PSI across all six cylinders. Crankshaft center journal runout measures 0.0003in TIR.

Field Installation Limits Procedures

Cruise control cable linkages require 5 lbs of pull force to maintain free mechanical movement across the throttle quadrant. This engine is not specified for high-boost turbo conversions, offshore marine craft, or aggregate rock crusher equipment.

• Evacuate petroleum break-in oil after 500 miles or 30 engine hours.
• Check cold intake valve lash at 0.007in and exhaust lash at 0.012in.
• Torque cylinder head fasteners to 26 ft-lbs followed by dual 90 degree sweeps.

Commercial Warranty Delivery Package

The proven VEGE assembly standard backs each crate engine with a 3-Year 100,000-mile parts warranty. The secure shipment includes the remanufactured long block core, oil pan, front timing cover, dual valve covers, oil pickup tube, and a signed dynamometer validation document.