Ford M-Block 5.8L V8 Remanufactured Engine – 1975-1982

Description

A 10.297-inch deck height combined with 45 PSI hot cruise oil pressure outputs 160 continuous horsepower to propel gross payload laden commercial service trucks using this Ford 5.8L 351M Remanufactured Engine. Configured for 1975 to 1982 commercial truck chassis, this modified 335-series engine pairs heavy cast iron block construction with low-RPM cargo pulling torque.

Featuring seasoned high-nickel gray iron construction, this 335-series block features a tall 10.297-inch deck height and an Ra 30 micro-inch deck finish. Internals include a precision-ground nodular iron crankshaft supported by two-bolt main caps, heavy forged steel connecting rods, and aluminum alloy pistons. Bores receive diamond plateau honing with a 45-degree angle. Dry block weight equals 575 lbs with a six-quart oil sump capacity.

Key Features of Ford 5.8L

Commercial transport fleets buy Ford 5.8L remanufactured engine platforms to secure maximum operational uptime during demanding seasonal cycles. Machine tolerances follow strict AERA standards to provide uniform mechanical clearance throughout the entire rotating package.

• 10.297-inch tall deck height accommodates long connecting rods to reduce side-wall cylinder scuffing.
• Large 3.500-inch stroke generates dependable low-RPM cargo pulling torque for commercial hauling.
• Classic 335-series cylinder heads feature induction-hardened exhaust valve seats for unleaded fleet fuel.
• Ford 5.8L high-capacity gear oil pump maintains 50 PSI steady fluid volume to overhead valvetrain gear.
• Hydraulic valve lifters maintain quiet valve actuation without regular manual lash readjustment.
• Double-roller timing chain drive prevents camshaft timing drift over long commercial shifts.
• Multi-layer head gaskets seal combustion pressures across extended operational duty hours.
• Two-piece rear main seal matches commercial fleet manual and automatic transmission bellhousings.

Modified Cleveland Derivative Combustion Metrics

Normal operating oil pressure maintains 20 PSI at hot idle and 45 to 55 PSI at 2,500 RPM cruise. Engine coolant temperature regulates between 180°F and 195°F through standard thermostatic flow. Power output measures 160 continuous horsepower at 3,800 RPM, providing 280 lb-ft torque at 2,000 RPM. An 8.0:1 compression ratio yields 140 to 150 PSI cranking compression. Heat rejection across radiator circuits reaches 4,400 BTU/min under Severe Commercial Fleet duty cycles across heavy regional freight corridors.

Tall Deck Modified Driveline Specs

The traditional rear crankshaft flange features a 6-bolt flywheel mounting pattern on a standard circular pitch. Front snout diameter measures 1.375 inches with a precision woodruff keyway for mechanical damper retention. Crankshaft thrust endplay checks out between 0.003 and 0.006 inches on dial indicators. Pilot bushing recess accommodates standard commercial C6 automatic and manual truck transmissions without binding.

Modified Cleveland Big Block Break In

Mechanically prime internal oil galleries through the distributor bore until oil reaches all valve rocker pivots before initial startup. Fill crankcase with SAE 10W-30 break-in oil containing high zinc levels to safeguard camshaft lobes. Not engineered for racing ethanol fuels, nitrous oxide injection, heavy marine usage, or boost pressures exceeding 5 PSI.

• Inspect external engine oil lines and fluid levels each shift.
• Check rocker valve lash and exhaust manifold torque every 12 months.
• Service crankcase engine motor oil and replace filter element every 3,000 miles.

Modified Cleveland Commercial Warranty Manifest

Protected by an elite 3-Year / 100,000-Mile commercial fleet warranty covering parts and block manufacturing integrity. The reinforced 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.