The Boss 302 Mustang: Trans-Am homologation car and its 2012 revival

Mustang Boss 302 history

The SCCA Trans-Am series capped engines at 305 cubic inches and required a minimum production run, so Ford built a street version of its race Mustang. The Boss 302 joined the 1969 lineup alongside the Mach 1 and the big-block Boss 429, with a 290-hp high-performance 302 V8, and 1,628 were built for 1969.

For 1970 Ford built 7,014, comfortably over the 6,500 the SCCA required, with smaller valves for better drivability and output still rated at 290 hp. The 1970 Boss 302 cost $3,720 to start, and in Trans-Am tune it won Ford the 1970 manufacturers' championship. 1970 was its last year.

The name returned for 2012 on the S197 Mustang. Ford's revised 5.0 V8, nicknamed "Road Runner," made 444 hp at a 7,400-rpm redline and 380 lb-ft, with quad exhaust outlets including side pipes, a Torsen limited-slip rear axle and a 3.73 ratio. The Laguna Seca edition, built for 2012 and 2013, deleted the rear seat for a cross-car brace and added a front splitter, rear wing and brake cooling ducts.[1],[2],[3],[4],[5],[6],[7]

Years and production numbers

Generations and key variants

Engine and drivetrain facts

• The original Boss 302 engine was a modified 302 V8 rated at 290 hp; for 1970 the valves were made smaller to improve street drivability, with the rating unchanged.
• Car and Driver's road test of the original recorded a 14.9-second quarter-mile at 93.4 mph (as cited by RM Sotheby's).
• The 2012 engine made 32 hp more than that year's Mustang GT and revved to 7,400 rpm, helped by a revised intake.
• The optional TracKey on the 2012–13 car cost $302 and enabled a track calibration.

Sources:[4],[5],[6]

What changed, generation by generation

1. 1969Introduced as a Trans-Am homologation model alongside the Mach 1 and Boss 429; 1,628 built.
2. 1970Production raised to 7,014; smaller valves; Ford wins the Trans-Am manufacturers' title; final year.
3. 2012Revival on the S197 with a 444-hp 5.0; Laguna Seca edition.
4. 2013Second and final year of the revival, including the Laguna Seca.

Sources:[1],[3],[4],[6],[7]

What to check before you buy one

• Boss 302 clones are common: on a 1969–70 car, check the 11-character VIN engine code and the door data plate, and ask for factory documentation such as the dealer invoice.
• Confirm whether the engine is original to the car; numbers-matching original Boss engines carry a large premium.
• On a 2012–13 car, decode the VIN and check the factory build record to confirm a Boss 302 or Laguna Seca and options such as the TracKey.
• Ask about track use on 2012–13 cars and inspect brakes, clutch and tires accordingly.
• Check open recalls by VIN at nhtsa.gov/recalls (17-character VINs only, so 1981 and later).

Model-specific problems by generation are tracked on our Ford Mustang known issues page. Engine guides: 5.0L Coyote V8.

Mustang Boss 302 prices and values

RM Sotheby's, Auburn Fall 2020 (Lot 6145): 1969 Boss 302, one of 1,628, sold for $77,000.[3],[4],[7]

RM Sotheby's, Miami 2024 (Lot 106): 1970 Boss 302 in Grabber Orange sold for $89,600.[3],[4],[7]

Hagerty Marketplace, October 9, 2024: 2013 Boss 302 Laguna Seca sold for $31,768 (no reserve).[3],[4],[7]

How to verify a Mustang Boss 302's factory options

On a 2012–13 Boss 302, the factory build confirms whether it is a Laguna Seca and which options it left with, such as the TracKey, Recaro seats and color combination; Laguna Seca cars command a premium over standard Boss 302s.

17-character VINs became standard for model year 1981 (49 CFR 565), so only the 2012–2013 Boss 302 has one. The 1969–1970 cars use Ford's older 11-character serial format.[8],[9]

For pre-1981 cars, the door data (warranty) plate carries the original factory codes, and The Henry Ford's Benson Ford Research Center in Dearborn holds extensive Ford Motor Company historical collections.