ATK HP78C-EFI Ford 302 365 HP Stage 3 EFI Crate Engine

Description

Achieve turn-key electronic fuel injection performance with the ATK HP78C-EFI Crate Engine in Stage 3 complete trim. Displacing 302 cubic inches, this Ford Windsor V8 creates 365 horsepower at 5,500 RPM and 360 lb-ft torque at 4,000 RPM. Fitted with self-tuning EFI, distributor, and water pump, it provides effortless street motivation in any weather conditions.

A precision-machined cast iron Ford block features a modern 1-piece rear main seal to eliminate lubricant leaks. The reciprocating group pairs a nodular cast iron crankshaft with forged connecting rods and 9.5:1 hypereutectic pistons across a 4.000-inch bore. Stroke measures 3.000 inches, featuring a 50 oz. external imbalance, dual-sump steel oil pan, and aluminum cylinder heads.

Key Features of ATK HP78C-EFI

Classic Mustang owners buy ATK HP78C-EFI crate engine packages to enjoy modern electronic fuel injection paired with vintage Ford small-block power. This complete EFI power unit transforms classic Mustangs, Ford F-100 pickups, and custom street rods.

• Throttle body electronic fuel injection system self-calibrates fuel delivery curves without requiring complex laptop tuning.
• Dual-plane aluminum intake manifold optimizes low-end torque while maintaining smooth fuel distribution to 5,800 RPM.
• High-flow aluminum cylinder heads dissipate excess combustion heat to resist detonation on service-station fuel supplies.
• Hydraulic roller camshaft profiles reduce valvetrain friction while sustaining broad power from 2,200 to 5,800 RPM.
• ATK HP78C-EFI electronic systems include a standalone computer and wiring harness for straightforward electrical hookup.
• Included electronic distributor integrates with engine management to maintain accurate ignition advance timing.
• Cast iron water pump provides correct hub height for standard Ford Windsor accessory belt drive pulleys.
• Pre-installed 50 oz. harmonic balancer and matching flexplate streamline mating to automatic transmissions.

Dyno Profile ECU Tuning

Dynamometer calibration tests confirm 365 brake horsepower at 5,500 RPM and 360 lb-ft torque at 4,000 RPM across a 2,200 to 5,800 RPM range. The 9.5:1 compression ratio operates safely on 91-octane service station gasoline. The throttle body preserves an 800 RPM idle producing 14 in-Hg manifold vacuum. Operating oil pressure registers between 40 and 60 PSI warm.

Bay Packaging Transmission Drop

Casting bounds follow classic Ford Windsor geometry, dropping between tight front shock towers without metal cutting. The crank tail requires the included 50 oz. imbalance flexplate to mate with Ford C4, AOD, or manual transmissions. Motor mount pads align with factory Ford frame perches, clearing manual steering boxes and tubular exhaust headers.

Pre-Run Setup Misuse Prohibitions

Prior to turning the ignition switch, pressure-feed the lubrication passages using a mechanical priming tool to wet internal bearings. Fill the crankcase with 10W-30 mineral break-in oil fortified with zinc additives. This power unit is not built for boat marine drives, continuous forced-induction boost beyond 6 PSI, or unmetered nitrous systems.

• Drain the break-in lubricant and mount a fresh spin-on oil filter after completing the first 500 street miles.
• Inspect high-pressure fuel line fittings, harness connections, and grounds every 3,000 miles of street operation.
• Examine throttle linkage operation and check coolant hose integrity every 12 months or 12,000 highway miles.

Warranty Information Package Manifest

ATK warrants this Windsor engine for 12 months against defects in materials and craftsmanship. The secure wooden crate holds the complete engine, EFI throttle body, computer, wiring harness, distributor, water pump, harmonic balancer, flexplate, spark plugs, wires, and certified dyno test report sheet.