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Chevelle & Ford Rear End Widths

CHEVELLESTUFF  All Rights Reserved

Lower spring mount on 1966 Chevelle.  A bolt and plate arrangement hold the spring in place and the pigtail is the same general diameter as the rest of the spring.

CHEVELLESTUFF  All Rights Reserved

Lower spring mount on 67 and later Chevelles fit over a tower on the rear end and the pigtail is a smaller diameter.

It has been reported that the 1967 model year could have either type of spring mount but I cannot confirm this

Casting numbers found to be the most prevalent in Chevelle 12-bolt rear ends:

1965 Chevelle 3859140N
1966 Chevelle 3875745N
1967 Chevelle 3894939NF
68-69 Chevelle 3917124NF
1969 Chevelle 3959038NF
70-72 Chevelle 3969278NF

As always, there will most likely be some rumor of overlap in numbers but unless you have a build sheet/Protect-O-Plate and can verify the stamped codes as original, who knows? It should also be noted that the 1965 12-bolt is the only one with the diagonal bracing on the center section casting.

Note: Thanks to David Bates for the above information!

According to an old article, Inside '64 -- '72 A-Bodies, (Car Craft Magazine), 1967 was a transition year in that A-body cars might have a 1964-66 style rear end, a 1968-72 rear end (which is wider, and commonly available), or a "hybrid" rear end, which will have the 60.5-inch width, but with the early spring mounting pad and trailing arm brackets. Several late 1966 rear ends with casting number 3875745, one dated L 8 6 (December 8, 1966), have been found in early 1967 Chevelles and retain the retention plates to secure the rear springs.

Measurements taken on 1967 Chevelle rear end for comparison.

Backing plate to backing plate - 53 5/16-inches (+/-).


Outside drum to outside drum - 60-inches (+/-).

Chevrolet

Outside
Width
YearModel
57.751962-1964Chevy II/Nova
57.751965-1967Chevy II/Nova
58.001978-1988Chevy Malibu, Monte Carlo
59.501968-1982Corvette
60.001955-1964Chevy Car
60.001967-1969Camaro
60.251968-1979Chevy II/Nova
60.501984-1995Corvette
60.501964-1967Chevelle
62.001955-1959Chevy Pickup
61.251968-1972Chevelle
62.501970-1981Camaro/Firebird

Ford

Outside
Width
YearModel
57.251957-1959Ford, Ranchero, Station Wagon
57.251965-1966Mustang
58.001966-1977Bronco
58.001964-1965Falcon
58.001977-1981Granada/Versailles
58.501977-1981Versailles
60.001958-1960Edsel
61.001964-1971Ford Full Size
61.001949-1951Mercury
61.251957-1972Ford F-100 Pickup
61.251960-1964Ford Full Size
61.251971-1973Mustang
61.251967-1973Torino, Ranchero, Fairlane
63.001970-1979Ranchero & Torino
63.001972-1979Ford Full Size & Intermediate
63.501967Fairlane
65.251973-1986Ford F-150 Pickup
65.251978-1986Bronco
65.251973-1986Ford Van 3/4 Ton
68.001972Ford Van 3/4 Ton
69.251977-1986Ford E-150 Van

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