Ford Cleveland 5.8L V8 Remanufactured Engine – 1970-1974 12729E

Description

Suppress canted-valve float and eliminate oil pressure starvation across high-RPM operation under 355 lb-ft continuous pulling across demanding regional vocational freight and municipal transport corridors using this Ford 5.8L Cleveland Remanufactured Engine. Engineered for 1970 to 1974 commercial and pursuit platforms, this 351 Cleveland platform features large-port canted-valve cylinder heads and two-bolt main iron block construction.

Cast from high-density gray iron with thin-wall casting technology, this 90-degree V8 block features an Ra 30 micro-inch deck finish. Internals include a nodular iron crankshaft supported by two-bolt main caps, heavy forged steel connecting rods, and aluminum alloy pistons. Cylinder bores receive diamond plateau honing with a 45-degree angle. Dry block weight equals 550 lbs with a five-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.

• Canted-valve cylinder heads position valves at compound angles to optimize air intake flow volume.
• Two-bolt iron main caps hold line-honed tolerances within 0.0004 inches of factory specifications.
• Heavy forged steel connecting rods eliminate fatigue failures under heavy continuous cargo loads.
• Ford 5.8L high-capacity gear oil pump maintains 55 PSI steady fluid volume to overhead valvetrain gear.
• Hydraulic flat-tappet 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.

Cleveland Canted Valve Combustion Ratings

Normal operating oil pressure maintains 20 PSI at hot idle and 50 to 65 PSI at 2,500 RPM cruise. Engine coolant temperature regulates between 180°F and 195°F through standard thermostatic flow. Power output measures 250 continuous horsepower at 4,600 RPM, providing 355 lb-ft torque at 2,600 RPM. A 9.0:1 compression ratio yields 160 to 170 PSI cranking compression. Heat rejection across radiator circuits reaches 4,400 BTU/min under Severe Commercial Fleet duty cycles across heavy regional freight corridors.

Cleveland Driveline Crank Flange Dimensions

The traditional two-piece rear main seal crankshaft flange features a standard 6-bolt flywheel mounting pattern on a 3.58-inch circle. Crankshaft snout diameter is ground to 1.375 inches with precision keyways for damper installation. Dial indicators gauge crankshaft thrust endplay between 0.003 and 0.006 inches. Pilot bore fits Ford commercial C6 automatic and manual truck transmissions without modification.

Cleveland Canted Valve Break In

Use a mechanical oil pump priming tool to pressurize the main oil gallery until oil flows from every rocker arm before ignition. Fill the engine with SAE 30 high-zinc mineral oil for camshaft lobe burnishing. Not engineered for marine salt water use, supercharger boost pressures above 5 PSI, or vehicles exceeding 9,000 lbs gross vehicle weight.

• Inspect external oil pan seals and cooling fluid levels each shift.
• Check front accessory drive belt alignment every 50 operating hours.
• Change crankcase motor oil and spin-on lubricant filter every 3,000 miles.

Cleveland Commercial Fleet Warranty Manifest

Backed by our 3-Year / 100,000-Mile commercial fleet warranty against defects in material and remanufacturing craftsmanship. Shipped in a heavy-duty container containing the remanufactured long block engine, high-capacity oil pump, pickup tube, complete installation gasket set, pre-lube instructions, and dyno inspection sheets.