Classic Muscle
Search cars, engines, parts...

Search Classic Muscle

Enter at least two characters to search the archive.

Enter at least two characters to search the archive.

Chassis reference

Custom 300 factory spring engineering schedule

suspension · factory

116-Inch Chassis reference for the 1957 Ford Custom 300 1957 Ford Custom 300

Reference Details

Availability
factory
Notes
The current Ford service-specification scan lists eight conventional-car front coil identification colors. Green, red, aluminum, and yellow coils carry 2,075/2,175/2,275/2,375-pound normal-load capacities, 14.80/15.05/15.30/15.55-inch free heights, and 400 +/- 16 lb/in rates. Blue, orange, purple, and grey coils carry 2,025/2,125/2,500/2,225-pound capacities, 13.65/13.85/15.41/14.05-inch free heights, and 500 +/- 16, 500 +/- 20, 430 +/- 17, and 500 +/- 20 lb/in rates. Custom and Custom 300 rear springs use four leaves, 54.88-55.12-inch loaded length, and 2.00-inch width; the standard schedule is 805-843 pounds and 105-115 lb/in, while the heavy-duty rate is 130-144 lb/in. The booklet does not map each front color to engine/body/duty application or provide service part numbers, so an individual car still requires its build record and physical identifiers.
Type
suspension

Cars With This Chassis Detail

1 linked car page.

Sources & Documentation