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

Description

The electronic fuel injection system on the ATK Ford 302 365 HP HP78C-EFI Stage 3 EFI Engine addresses classic hot-start and fuel delivery issues. Experience crisp throttle response and trouble-free starting during weekend performance driving. This turn-key build utilizes high-flowing aluminum cylinder heads to output three hundred sixty-five horsepower smoothly.

Engine Architecture & Core Specifications

• Block Material: Cast iron Ford Windsor Small Block, precision machined.
• Cylinder Heads: High-performance aluminum cylinder heads.
• Compression Ratio: 9.5:1 advertised compression ratio.
• Bore & Stroke: 4.000 inch bore x 3.000 inch stroke (302 CID / 5.0L).
• Rotating Assembly: Externally balanced 50 oz imbalance with a hydraulic roller camshaft.

Component Breakdown: Turn-Key Complete EFI Engine

This complete engine package arrives fully dressed from the intake manifold to the oil pan to eliminate sourcing individual modern accessories.

• A high flow throttle body sits atop a matched electronic fuel injection manifold while the included computer and wiring harness ensure immediate ignition out of the crate.
• A long style water pump and harmonic balancer complete the front drive assembly allowing builders to focus on chassis installation.

Vehicle Fitment & Compatibility Matrix

Designed for classic Ford and Mercury restomod projects this complete EFI engine drops perfectly into vintage chassis. Sourcing one of our high-output Ford 302 crate engines modernizes your classic restoration instantly.

• Fits 1965-1973 Ford Mustang models looking for an instant fuel-injected powertrain swap.
• Fits 1966-1977 Ford Bronco platforms requiring a reliable and modern EFI setup.
• Fits 1967-1973 Mercury Cougar applications needing a reliable V8 foundation.
• Fits classic Ford F-100 pickup truck conversions requiring a 302 drop-in setup.

Fuel & Ignition System Requirements

Supplying adequate fuel pressure to this EFI Windsor platform requires capable modern supporting hardware.

• An upgraded high pressure electronic fuel pump is required to supply the fuel injection system while utilizing 91 Octane premium pump gas prevents pre-ignition under load.
• The pre-installed distributor and spark plug wires mandate a clean twelve volt power source directly from the battery to guarantee a powerful spark.

Installation, Break-In Oil & Priming Instructions

Executing a flawless installation demands meticulous attention to fluid dynamics and proper heat cycling.

• Before firing the engine builders must utilize a specialized tool to prime the oiling system manually ensuring fluid reaches the upper valvetrain completely.
• Fill the engine with a premium high zinc break in oil and perform a careful initial startup monitoring for leaks before executing a 500 mile break in period.

USA Warranty, Emissions & Logistics

Protecting your investment requires understanding the specific logistics and legal compliance associated with this purchase.

• Backed by a strict 1-Year manufacturer warranty this complete long block offers extensive coverage against assembly defects when documented installation procedures are followed.
• This non-emissions compliant engine is designated for pre-emissions or off road Race Use Only and requires freight delivery to a commercial address with a forklift.