Image credits: © Ford.

1970 Ford Mustang

The Ford Mustang created a sensation when it was introduced in 1964, and offered a combination of personal luxury, sporty performance, and fresh styling. It was the most successful new car introduction in the history of the automobile industry. Along with its impressive performance and lean size, the Mustang was available with a broad options list. This unknown market segment quickly triggered competition from every major car company, creating overnight the 'pony car' class.

Buyers had many options, from a Spartan six-cylinder coupe to a fully equipped V-8 convertible. Horsepower continued grow during the late Sixties, and racing was on every manufacturer's agenda, as it was a valuable way to promote the brand. No other American manufacturer had done it bigger than the Ford Motor Company, with victories on an international stage, winning at LeMans and other races of the FIA World Sportscar Championship, Formula One by financing the Ford Cosworth DFV engine, and continued pursuit of victories in the USAC National Championship and the Indianapolis 500.

In 1970, Ford ceased its official racing activities, but not before the Bud Moore-prepared Mustang Boss 302 won the Trans Am title, with drivers Parnelli Jones and George Follmer. The Ford Mustang Mach 1 was also triumphant in the SCCA Manufacturer's Rally Championship.

The lessons learned through racing were instrumental in improvements made to the Mustang throughout the years. In 1969, Ford introduced a limited edition to the Mustang lineup. The Boss 429 referred to its 429 cubic-inch V-8 engine, and the 'Boss Nine' was the company's answer to the Chrysler 426 CID 'Hemi' which dominated NASCAR racing during the late 1960s. Because of the size of the engine, modifications were made to the entire front end of the car which was too narrow to accommodate the large block. Kar Kraft of Brighton, Michigan was contracted to hand-build the Boss 429 Mustang.

The Boss 429 was built for racing, and was commonly referred to as the 'NASCAR' motor. Its purpose was to homologate Ford's new hemi-head Boss 429 engine for NASCAR Grand National competition. It was based on a strengthened version of the 385 series engine, and given a high nickel content, forged steel connecting rods, forged pistons, forged crankshaft, and a cast iron block with four main bearings. It was given aluminum cylinder heads with a semi-hemispherical combustion chamber with large intake and exhaust ports. Because of the shape of the head design, the engine was nicknamed the 'Blue Crescent.' A single Holley four-barrel carburetor rated at 735 CFM was mounted on a dual plane, aluminum intake manifold. For insurance purposes, the engine was conservatively rated at 375 horsepower, but produced considerably more in 'race tune.' With slicks, the Boss 429 covered the quarter-mile in the 12-second range.

The engine was backed by a close ratio four-speed Toploader transmission with a Hurst Competition shifter. There was a 9-inch rear end fitted with 3.91 gears, a Traction-Lock limited slip differential, an external oil cooler, and a competition suspension with front and rear anti-roll bars and staggered rear shocks. The front shock towers were cut and relocated, the battery was moved to the trunk, and disc brakes were placed in the front. Chrome Magnum 500 wheels were placed at all four corners and rode on F60x15 belted raised white letter tires.

The Boss 429 was available for two years beginning in 1969, and the only factory option was color (Calypso Coral, Grabber Orange, Grabber Green, Grabber Blue, and Pastel Blue). The 1970 Boss 429 received slight restyling, and total production culminated to 499 examples built (859 for 1969 (including two Boss-Cougars)). At $4,087, the Boss 429 was the priciest non-Shelby Mustang to date.

The rest of the 1970 Mustangs were given slight changes over the 1969 models, including the return to single headlights. The concave panel and lights of 1969 were replaced with flat taillight moldings and flat escutcheon panel. Bodystyles included the hardtop coupe, fastback, convertible.

New for 1970 was the 351 cubic-inch 'Cleveland' V8 engine, in two- and four-barrel configurations. The two-barrel versions was rated at 250 horsepower while the four-barrel brought horsepower to 300 bhp. The base six-cylinder engine was an overhead valve 200 CID which had 115 horsepower. The base 302 V8 produced 220 horsepower with a two-barrel carburetor, or 290 with the Holley four-barrel setup. The Cobra Jet 428 V8 with a Holley four-barrel carburetor produced 335 horsepower, and the Super Cobra Jet 428 V8 with a modified compression ratio offered 360 horsepower.

Standard equipment included carpeting, vinyl high-back bucket seats, and a floor-mounted shift lever. The Grande trim level included Deluxe two-spoke steering wheel, wheel covers, additional exterior moldings, luxury trim bucket seats, dual outside paint stripes, and color-keyed racing mirrors.

The Mach I trim level added vinyl bucket seats, hood scoop, color-keyed racing mirrors, deluxe steering wheel with rim-blow feature, rocker panel moldings, rear deck lid tape stripe, console-mounted shift controls, and deep-dish sport wheel covers. The base engine in the Mach I was the 351 CID, two-barrel V8.

The Mustang Boss 302 had a quick ratio steering, Space Saver tire, and a functional front spoiler.

Total 1970 Ford Mustang production reached 197,045 examples. This was a considerable decrease from the prior year's 299,824 units.


by Daniel Vaughan | Feb 2020

Related Reading : Ford Mustang History

The Mustang was introduced at the 1965 New York Worlds Fair, Mustang Mania instantly swept the country, and a new automotive market segment was created - the 22 or better known as the ponycar. Though its mechanical underpinnings descended from the Falcon, the Mustang was completely different. It was a compact, tight, clean package weighing in at a modest 2,550 pounds - a departure from the ever-enlarging....
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Related Reading : Ford Mustang History

The Ford Mustang first appeared in 1964 and was immediately popular for its style and its capabilities. The largest engine offering of the time was the 289 V-8 K-code small block engine which was sufficient but enthusiasts wanted and demanded more power. The base engine was a six-cylinder power plant. The body style configurations included coupe, convertible and fastback. In its first year of....
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Related Reading : Ford Mustang History

A pillar of American automotive lore, the Mustang is the vehicle the brought sporting dash and styling at a price that almost everyone could afford. Always extraordinarily attractive, the Mustang has been capturing the hearts of drivers for nearly 40 years. Introducing a whole new breed of automobile, the pony car, Ford wasnt content to stand on the sidelines while others jumped ahead. Rather than....
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1970 Vehicle Profiles

1970 Ford Mustang vehicle information

FastBack

Chassis Num: 0F02Z123173

The 'Big Three' automakers had a self-imposed ban on racing, but by the mid-1960s, this agreement had collapsed. By this point in history, most American auto manufacturers were providing factory support to supposedly independent racing teams. It was ....[continue reading]

1970 Ford Mustang vehicle information

FastBack

With only 498 Boss 429 Mustangs built as 1970 models, along with two Boss 429 Cougars, these cars homologated the Boss 429 engine for NASCAR racing that won the 1969 championship. This Mustang is one of only two Boss 429s known to have been converted....[continue reading]

1970 Ford Mustang vehicle information

Hardtop Coupe

Chassis Num: 0F02Z134616

Ford developed a new 429 cubic-inch V8 engine in the late 1960s with all-new free-flowing cylinder heads, a 735 CFM Holley carburetor, aluminum high-rise intake manifold, 11.0:1 compression, a four-bolt main block, and header-style exhaust manifolds.....[continue reading]

FastBack
Chassis #: 0F02Z123173 
FastBack
 
Hardtop Coupe
Chassis #: 0F02Z134616 

Recent Vehicle Additions

Performance and Specification Comparison

Price Comparison

1970 Mustang
$3,715-$28,120
1970 Ford Mustang Price Range: $2,720 - $3,715

$2,687 - $3,378
$3,300 - $3,910
$4,960 - $5,180

Model Year Production

#1#2#3Ford
1975Chevrolet (1,755,773)Toyota (1,714,836)Ford (1,569,608)1,569,608
1974Chevrolet (2,333,839)Ford (2,179,791)Renault (1,355,799)2,179,791
1973Chevrolet (2,579,509)Ford (2,349,815)Fiat (1,390,251)2,349,815
1972Chevrolet (2,420,564)Ford (2,246,563)Fiat (1,368,216)2,246,563
1971Ford (2,054,351)Chevrolet (1,830,319)Volkswagen (1,128,784)2,054,351
1970Ford (2,096,184)Chevrolet (1,451,305)Volkswagen (1,193,853)2,096,184
1969Chevrolet (2,092,947)Ford (1,826,777)Volkswagen (1,241,580)1,826,777
1968Chevrolet (2,139,290)Ford (1,753,334)Volkswagen (1,191,854)1,753,334
1967Chevrolet (2,206,639)Ford (1,730,224)Toyota (1,068,321)1,730,224
1966Ford (2,212,415)Chevrolet (2,206,639)Volkswagen (1,168,146)2,212,415
1965Chevrolet (2,375,118)Ford (2,170,795)Volkswagen (1,174,687)2,170,795

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