About This Engine

The Ford 302 is one of the most important small block V8 engines Ford ever produced. Born in 1968 by stroking the proven 289 to a 3.00 inch stroke, the 302 was created specifically to meet the FIA 5.0-liter displacement limit for endurance racing- the same limit that allowed the GT40 to compete at Le Mans. In its debut year the 302 powered the GT40 to victory at Le Mans and was simultaneously made available in the Mustang, establishing a dual racing-and-street identity it never lost.

In 1969 and 1970 the Boss 302 Mustang used a unique high-revving version of the engine with Cleveland-style canted valve heads, solid lifters, and 4-bolt main caps- rated conservatively at 290 hp but producing significantly more in Trans-Am racing trim. The Boss 302 secured the 1970 SCCA Trans-Am Manufacturers Championship for Ford.

In its later life as the 5.0 HO in Fox Body and SN95 Mustangs from 1982 to 1995, the 302 became the foundation of an entire generation of American performance car culture. The factory roller camshaft from 1985 and sequential EFI from 1986 transformed it into a modern performance engine that remains one of the most modifiable V8s ever built.

Signs You Need a Replacement Engine

• Oil burning on startup- valve stem seal wear on older flat-tappet engines
• Timing chain noise at cold start- worn chain on pre-1982 engines
• Knocking under load- rod or main bearing wear on high-mileage units
• Loss of compression on one or more cylinders- ring wear or scored walls
• Oil leaks at the rear main seal- two-piece pre-1982 seal is a known seep point
• EFI hesitation or rough idle not resolved by basic tune- mass airflow sensor or injector wear on 5.0 HO units

Known Problems With This Engine

• Nylon cam gear failure on pre-1985 flat-tappet engines: Early 302 engines used a nylon timing gear that degrades with age and heat and can fail suddenly. We check timing gear condition during inspection.
• Flat-tappet cam wear: Pre-1985 302 engines need ZDDP zinc additive in the oil. Many were run for years with modern low-zinc oil. We inspect and report on valvetrain condition indicators.
• E7TE head flow limitation: The 1987 to 1995 5.0 HO used E7TE cast iron heads- adequate in stock form but a restriction in performance builds. We note head casting for every unit.
• TBI vs SEFI fuel system: Some 1980 to 1985 302 engines used throttle body injection. 1986 onward used superior sequential multi-port EFI. We confirm the fuel system type before shipping.
• Boss 302 identification: Both Cleveland-style canted valve heads and 4-bolt main caps are required to confirm a genuine Boss 302 unit. We document this thoroughly.

Key Ford 302 Variants by Year and Application

The Ford 302 went through several significant evolutions across its 33-year production run:

Common Casting Numbers- Reference

We document the casting number and date code of every unit. Available on request before you place your order.

What Is Included- What Is Not Included

Vehicle Compatibility- Direct Fit

The Ford 302 was factory installed in the following Ford and Mercury vehicles:

Swap compatibility: The 302 shares the Windsor small block bellhousing bolt pattern and motor mount locations with the 289, 351 Windsor, and 260. It is a direct swap in any vehicle originally equipped with those engines. IMPORTANT: the 302 fires 1-5-4-2-6-3-7-8. The 351 Windsor fires 1-3-7-2-6-5-4-8. Verify firing order before installing plug wires if replacing a 351W with a 302.

Transmission compatibility: Ford C4- 3-speed auto, lightweight | Ford C6- heavy duty auto | Ford AOD- overdrive auto from 1980 | Ford T5- 5-speed manual (Fox Body) | Ford Top Loader 4-speed- classic performance manual.

Not sure if this fits? Call (240) 301-0095 with your year, make, model, and current drivetrain. We verify fitment before every order ships.

Common Names and Search Terms

Used OEM vs Rebuilt vs Aftermarket- Which Is Right for You?

Used OEM is right for a Mustang, F-150, or Bronco restoration- particularly where a compression-tested documented engine is needed at a fraction of reman cost. Our units are tested with year, cam type, and fuel system documented.

A remanufactured or crate 302 makes sense for a performance build needing fresh tolerances or a specific output target. Ford Racing crate 302s and aftermarket stroker kits are common paths for Mustang builds. Call us to discuss options.

Condition and Inspection Process

• Compression test across all 8 cylinders- results per cylinder recorded before shipping
• Cam type confirmed- flat-tappet (pre-1985) or roller (1985 onward) noted
• Fuel system type confirmed- carburetor, TBI, or SEFI noted before shipping
• Nylon timing gear condition checked on pre-1985 flat-tappet units
• Visual inspection for cracks, scored journals, and stripped threads
• Casting number documented- year and block family confirmed
• Head casting noted- E7TE or other documented before shipping

Mileage varies by unit. Where available from the donor vehicle we provide it. Where mileage cannot be confirmed, we disclose this before your order is placed.

Buyer Tips- What to Know Before You Order

• Roller vs flat-tappet: 1985-and-newer 302s have a roller camshaft. Pre-1985 engines need ZDDP zinc additive in the oil.
• EFI compatibility: The 1986-and-newer 5.0 HO uses sequential multi-port EFI. If your application is carbureted, you will need a different intake manifold.
• Firing order: The 302 uses 1-5-4-2-6-3-7-8. The 351 Windsor uses a different firing order. Verify before installing plug wires if you are swapping between these engines.
• Boss 302 identification: Authentic Boss 302 engines have a specific high-nickel block casting, 4-bolt mains, solid lifters, and Cleveland-style canted valve heads. We document these for any Boss 302 unit in inventory.
• Timing set: Replace the timing chain and sprockets at installation. Nylon cam gears on early 302 engines are a documented failure point.

Why Buy From Vaz Auto Solutions

• Year, cam type, and fuel system documented before you pay- no guessing what you are installing
• Compression tested across all 8 cylinders- results shared before order confirmed
• Nylon timing gear noted during inspection on early flat-tappet units
• Fitment verified for your specific Ford or Mercury vehicle before every order ships
• No core charge- keep your old engine
• Free freight pallet delivery to all 50 states, no hidden fees
• 15 day replacement warranty on internal engine defects
• Call (240) 301-0095- speak with someone who understands 302 variants from Boss 302 through the 5.0 HO era