Makes › Ford › Mustang › First generation › Mustang Boss 302 Trans-Am (Bud Moore Engineering, 1970–71) · Factory competition · 1970–1971

Ford
Mustang Boss 302 Trans-Am (Bud Moore Engineering, 1970–71)

Kar Kraft / Bud Moore works cars that won the 1970 Trans-Am manufacturers' title; three bodies-in-white prepared for 1971

?ProductionNot yet verified

0Chassis documentedin this archive

?SurvivingNot yet verified

Contents

01Overview
02Production & history
03Specifications
- Technical specifications
04Colours & options
- Factory colours & interiors
- Factory options & codes
05Individual cars
06Reference

01Overview

At a glance

Built: Not yet verified
Years: 1970–1971
Engine: OHV V8 · 4,950 cc / 4.9 LFactory: 302 cu in · converted
Power: 343 kW / 466 PSFactory: 460 hp · converted
Top speed: Not yet verified
Body: Not yet verified
Designer: Larry Shinoda (Boss 302 body styling); Kar Kraft, Brighton, Michigan (Trans-Am race-car engineering; prototypes under chief designer/engineer Lee Dykstra)
In this archive: Not yet verified
Surviving: Not yet verified

Sources and any conflicting figures are in the sections below.

Why it matters

The Bud Moore Engineering Boss 302s were Ford's factory-backed Trans-Am racers built with Kar Kraft. In 1970, which one source calls Trans-Am's greatest year, they won the SCCA Manufacturers' Championship for Ford, with Parnelli Jones and George Follmer driving.

How rare is it?

Six separate kinds of rarity – never combined into one number.

Model rarityNot yet assessed Production figure not yet verified.

Specification rarityNot yet assessed

Colour rarityNot yet assessed

Individual rarityNot yet assessed

Historical rarityNot yet assessed

Survival rarityNot yet assessed

Each kind of rarity is rated separately and never combined.

02Production & history

Production

Every figure says what it counts.

No production figures recorded yet.

History

Kar Kraft supplied Bud Moore Engineering with four serialised Mustangs in 1969 and three more for 1970. In 1970 the team won the manufacturers' title, with Jones scoring five wins and Follmer one.

At the end of 1970 Ford withdrew factory support. Kar Kraft nevertheless delivered four bodies in white, numbered 1-1971 to 4-1971 and known as BME 1 to 4. The team ran a shortened 1971 schedule with two of them and kept BME 3 as the unused spare. BME 3 stayed with the team until 1972, was then fitted with a 351 and raced in IMSA, later returning to historic racing and winning the Trans Am race at the 2015 Monterey Historics.

BME 4 was never completed in period. After it was acquired in 2008 it was finished to 1971 specification under the supervision of Bud Moore and his sons, who authenticated the build. RM Sotheby's described it as never raced when offered in 2015, and a 2021 Mecum listing noted a single track appearance by 2018.

Variants

How each version differs from the standard Mustang Boss 302 Trans-Am (Bud Moore Engineering, 1970–71).

No variants documented yet. Have a source? Contribute it.

03Specifications

Technical specifications

Engine

Engine family	Not yet verified
Engine code	Not yet verified
Layout	OHV V8¹ Independently researched
Displacement	4,950 cc / 4.9 LFactory: 302 cu in · converted¹ Independently researchedBME 3's RM Sotheby's listing instead gives an estimated 500 bhp from 350 cu in.
Bore	Not yet verified
Stroke	Not yet verified
Compression ratio	12:1² Independently researchedRace-engine figure for the 1969 Kar Kraft Trans-Am Boss 302. Source gives the 1969 Kar Kraft specification of a Bud Moore Engineering car (Moffat car, VIN 9F02M148624); the 1970-71 Bud Moore cars are not described in the cached pages, so treat as 1969-season spec.
Valvetrain	OHV, solid-lifter camshaft, 1.73:1 aluminium roller rockers, 2.23 in intake / 1.71 in exhaust valves (Cleveland-type canted-valve heads)² Independently researchedSource gives the 1969 Kar Kraft specification of a Bud Moore Engineering car (Moffat car, VIN 9F02M148624); the 1970-71 Bud Moore cars are not described in the cached pages, so treat as 1969-season spec.
Fuel system	Holley four-barrel carburetor¹ Independently researched
Power	343 kW / 466 PSFactory: 460 hp · converted¹ Independently researchedA 2021 Mecum listing of the same BME 4-1971 car reports a dyno result of 525 HP at 7,700 RPM after a 2015 rebuild; BME 3 was catalogued at an estimated 500 bhp.
Power at	Not yet verified
Torque	Not yet verified
Redline	8,000 rpm² Independently researchedClaimed endurance speed of the fully race-prepared 1969 engine. Source gives the 1969 Kar Kraft specification of a Bud Moore Engineering car (Moffat car, VIN 9F02M148624); the 1970-71 Bud Moore cars are not described in the cached pages, so treat as 1969-season spec.

Transmission & drivetrain

Gearbox	Four-speed manual¹ Independently researched
Gears	Not yet verified
Driven wheels	Rear² Independently researchedSource gives the 1969 Kar Kraft specification of a Bud Moore Engineering car (Moffat car, VIN 9F02M148624); the 1970-71 Bud Moore cars are not described in the cached pages, so treat as 1969-season spec.

Chassis, body & dimensions

Chassis	Not yet verified
Front suspension	Independent: upper A-arms, lower transverse arms with drag struts, coil springs, tube shocks, anti-roll bar¹ Independently researched
Rear suspension	Live axle: multi-leaf springs, upper trailing arms, Watts link, anti-roll bar¹ Independently researched
Brakes	Four-wheel disc brakes¹ Independently researched
Steering	Quick-ratio 16:1 steering box² Independently researchedSource gives the 1969 Kar Kraft specification of a Bud Moore Engineering car (Moffat car, VIN 9F02M148624); the 1970-71 Bud Moore cars are not described in the cached pages, so treat as 1969-season spec.
Body construction	Steel unibody, fully seam-welded, with welded tubular steel roll cage tied into the suspension mounting points; thin-gauge bolt-on panels² Independently researchedSource gives the 1969 Kar Kraft specification of a Bud Moore Engineering car (Moffat car, VIN 9F02M148624); the 1970-71 Bud Moore cars are not described in the cached pages, so treat as 1969-season spec.
Wheelbase	2,740 mmFactory: 108 in · converted¹ Independently researched
Length	Not yet verified
Width	Not yet verified
Height	Not yet verified
Front track	Not yet verified
Rear track	Not yet verified
Kerb weight	Not yet verified
Dry weight	Not yet verified

Performance

Maximum speed	Not yet verified
0–100 km/h	Not yet verified
Fuel tank	Not yet verified

“Not yet verified” means no source has been checked for that value yet. Nothing is estimated to fill a gap.

04Colours & options

Factory colours & interiors

Original paint and trim, with the number of cars in each where a source gives it.

Not yet documented. Have a source? Contribute it.

Factory options & codes

Codes are shown exactly as written by the manufacturer.

Not yet documented. Have a source? Contribute it.

05Individual cars

Chassis register

Every documented car, with its colours, history and where it is now. Open a row for the full record. Known chassis are not automatically authenticated originals.

Not yet documented. Have a source? Contribute it.

Competition history

Every race result of the individual cars, in date order. Click a chassis number to open its full record in the register.

Not yet documented. Have a source? Contribute it.

Auction & sale history

Documented public sales of the individual cars. Click a chassis number to open its full record in the register.

Not yet documented. Have a source? Contribute it.

See one in person

Museums where an example of this car can be seen.

No example is documented on public display yet. Have a source? Contribute it.

06Reference

Identification guide

How to tell an original from a replica or later conversion.

Being verified against factory or registry sources before it is published. Have a source? Contribute it.

Sources

Each number links to the exact facts it supports.

1
1970 Ford Mustang Boss 302 Kar Kraft Trans-Am (BME no. 4), Arizona 2015 lot Level C RM Sotheby's
- 302 cu. in. OHV V-8 engine
- Holley four-barrel carburetor
- 460 hp, 302 cu. in. OHV V-8 engine
- four-speed manual transmission
- upper A-arms, lower transverse arms with drag struts
- rear live axle suspension with multi-leaf springs
- four-wheel disc brakes
- Wheelbase: 108 in.
Accessed 2026-11-12
2
Allan Moffat's 1969 T/A Mustang Level C Mark Oastler · Bowden's Own (article by Mark Oastler, Australian Muscle Car) · 2016-05-31
- 12:1 forged alloy pistons (road versions used 10.5:1) (Engine)
- 2.23-inch intake and 1.71-inch exhaust valves (Engine)
- 1.73:1 aluminium roller rockers (Engine)
- could endure up to a staggering 8000rpm (Engine)
- live axle/leaf spring arrangement also be retained (Suspension)
- quick-ratio 16:1 steering box (Suspension)
- shell was fully seam-welded (Body/chassis unit)
- fully welded tubular steel roll cage (Body/chassis unit)
Accessed 2026-11-13

Research coverage

Production figuresNone yet

Technical data15 verified values

Factory coloursNot yet researched

Option codesNot yet researched

Chassis documented0

Photographs1

Shows what this archive has recorded so far – not how much of the history is known.

Editorial status

Reviewed · 2026-11-12

Revision history (3)

2026-11-12 Published as a basic profile; the production figure is not yet verified.
2026-11-12 Research gaps filled from sources (13 values).
2026-11-13 Research gaps filled from sources (8 values).

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Ford
Mustang Boss 302 Trans-Am (Bud Moore Engineering, 1970–71)

At a glance

Why it matters

How rare is it?

Production

History

Variants