Chevy 350 5.7L 4 Bolt Main V8 Remanufactured Engine – 1996-2000

Description

Across grueling 16-hour public utility work shifts demanding continuous hydraulic pump PTO fluid operation, diamond-plateau honed cylinder walls maintain zero oil bypass inside the Chevy 350 5.7L Remanufactured Engine. Built for 1996 to 2000 commercial trucks, this L31 Vortec four-bolt main platform combines modern roller valvetrains with immense bottom-end structural rigidity.

Featuring a heavy-duty one-piece rear main seal block casting, this cast iron platform maintains an Ra 30 micro-inch deck finish. A micro-polished nodular iron crankshaft sits in line-honed four-bolt main journals, linking forged powdered metal rods to hypereutectic aluminum pistons. Cylinder bores receive diamond plateau honing with a 45-degree angle. Dry block weight equals 440 lbs with a five-quart oil pan capacity.

Key Features of Chevy 350

Vocational contractors buy Chevy 350 remanufactured engine products to restore heavy municipal haulers to peak fleet productivity. Every remanufactured component meets exact AERA engineering criteria to eliminate severe maintenance headaches across tough commercial duty cycles.

• Four-bolt main caps provide superior lower-end stability under sustained PTO hydraulic pump loads.
• Hydraulic roller lifters reduce internal friction to optimize commercial fuel mileage performance.
• Vortec high-swirl cylinder heads accelerate flame propagation for cleaner exhaust emissions.
• Multi-layer steel cylinder head gaskets withstand severe thermal cycling without coolant leakage.
• Chevy 350 gerotor oil pump maintains 60 PSI oil pressure throughout critical oil passages.
• Powdered metal connecting rods resist elongation under severe 5,000 RPM deceleration stress.
• Graphite-coated piston skirts eliminate cylinder scuffing during cold winter morning startups.
• Nitrile one-piece rear main seal stops crankcase oil seepage past the flywheel hub.

Dynamic Compression Operating Pressure Limits

Hot engine idle oil pressure registers at 25 PSI, rising to 55 to 65 PSI at highway cruising speeds. Operating thermostat parameters keep engine coolant between 190°F and 205°F. Continuous engine output generates 255 horsepower at 4,600 RPM and 330 lb-ft torque at 2,800 RPM. A 9.4:1 compression ratio maintains 185 to 195 PSI cranking compression. Thermal cooling load equals 3,850 BTU/min under Severe Commercial Fleet highway operation across demanding regional freight routes.

Vortec Crankshaft Transmission Interface Data

The one-piece rear main crankshaft flange carries a 6-bolt flywheel bolt pattern with a 2.500-inch pilot diameter. Crankshaft snout measures 1.248 inches with standard keyways for dynamic balancer installation. Crankshaft endplay checks out between 0.003 and 0.007 inches using precision dial indicators. Torque converter pilot bore centers commercial 4L80E automatic transmission input shafts without friction.

Start Priming Negative Operating Filter

Pre-lubricate oil circuits with an external pressure canister prior to first start to safeguard dry cam bearings. Fill radiator with approved Dex-Cool 50/50 mixture using vacuum cooling tools to prevent hot spots. Not engineered for supercharged drag race vehicles, continuous marine salt water usage, or vehicles exceeding 15,000 lbs gross vehicle weight.

• Inspect external accessory belt drive alignment and fluid levels each shift.
• Check radiator cooling system hoses and clamps every 50 operating hours.
• Change crankcase motor oil and heavy spin-on filter every 5,000 miles.

Warranty Terms Shipping Crate Details

Secured by an elite 3-Year / 100,000-Mile commercial fleet warranty covering parts and block manufacturing integrity. The wooden transport crate includes the remanufactured long block engine, high-output oil pump, oil pickup tube, complete engine gasket set, installation guidelines, and dynamometer balance test reports.