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How To Identify Vintage Mustang Distrib...
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How To Identify Vintage Mustang Distributors
Distributors for classic Mustangs are getting harder to find. Here's how to spot the right one for your Mustang.
February 22, 2006
The majority of Mustang dual-point distributors utilized vacuum advance, as you can see by the diaphragm mounting ears on this Boss 302 distributor body on the left. The 289 high-performance distributor, right, used centrifugal advance, so it didn't need a diaphragm or mounting ears.
The majority of Mustang dual-point distributors utilized vacuum advance, as you can see by
Point plates and cams differ in the various Mustang distributors. On the left is a single plate used on an all-centrifugal 289 high-performance distributor. At the right is a dual point plate from a Boss 302, which had vacuum advance. Note the taller cam used with the dual plate.
Point plates and cams differ in the various Mustang distributors. On the left is a single
There were four types of vacuum diaphragms used on Mustang distributors. From left to right, a single diaphragm used in '65-'67 and on '68-'70 big-block automatics; a dual diaphragm with a cad-plated narrow band as used on 302 two-barrels, '67-'70 FE automatics, and 351 automatics; a dual diaphragm with a zinc-plated wide band as found on all Boss engines, '70 428 CJ four-speeds, and '70-'71 429 CJ four-speeds; and a '72-'73 dual diaphragm (note the position of the front vacuum tube) used on 351 CJ four-speeds and many service distributors. Ulrey has reproduced most of these diaphragms.
There were four types of vacuum diaphragms used on Mustang distributors. From left to righ
Boss 302 distributors have this C80F-12131-A on the side of the shaft housing.
Although this is a distributor for a '63 427 big-block, it shows the oval style of FoMoCo that was cast into '64 1/2 Mustang distributors.
Although this is a distributor for a '63 427 big-block, it shows the oval style of FoMoCo
For '65-'67, the cast FoMoCo was rectangular. The C5GF-A casting number at the upper left indicates this distributor was originally used in a '65-'66 Mustang 289 with four-barrel carburetion and manual transmission. Underneath is the 5LB date code, indicating a build date of the second week of November 1965.
For '65-'67, the cast FoMoCo was rectangular. The C5GF-A casting number at the upper left
Sometime during the '67 model year, Ford switched to Autolite distributors, which were used through '71. This one is a C80F-J from a '69 Cobra Jet automatic, built on September 9, 1968, as indicated by its 8J9 build date.
Sometime during the '67 model year, Ford switched to Autolite distributors, which were use
In '72-'73, Mustang distributors were labeled Motorcraft. This one, with casting number D2AF-RA, is actually from a '72 Galaxie. Note the 1K11 date code: October 11, 1971.
In '72-'73, Mustang distributors were labeled Motorcraft. This one, with casting number D2
Mike Ulrey offers completely rebuilt distributors for Mustangs, including rare ones like this Boss 351 version. Parts are also available.
Mike Ulrey offers completely rebuilt distributors for Mustangs, including rare ones like t
412 Maryland Ave.
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