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1972 Ford Distributor Specifications - 351C, 351W, 400, 429, 460 Advance Curves

Ford Group 23 distributor specification table (continued) for 351W/351C/400/429 CID Mustang, Torino, Montego and T-Bird: centrifugal and vacuum advance/retard set points.

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This is a continued 'Distributor Specifications' table from a Ford service manual, Group 23 – Ignition System (page 27). It lists distributor calibration specifications for 1972 Ford engines: 351W, 351C-2V, 351C-4V, 351C-HO, 400 CID, 429 CID, 429 Police, and 460 CID. For each engine, the table provides the distributor part number (12127 basic part) for 49-state and California versions, the transmission (M-Manual, A-Automatic), and the applicable car lines (Ford, Mercury, Mustang, Cougar, Torino, Montego, Thunderbird, Lincoln, Mark IV). Three test-stand specification groups are given: centrifugal advance in degrees at 500, 750, 1000, 1500, and 2000 RPM (test stand set to 0° at 250 RPM and 0 in. Hg); vacuum advance in degrees at 5, 10, 15, and 20 inches Hg (test stand set to 0° at 1000 RPM and 0 in. Hg); and vacuum retard in degrees at the same vacuum points. Distributor numbers include D2AF-PA, D2ZF-AA, D2AF-KA, D2ZF-CA, D2ZF-EA, D2ZF-FA, D2ZF-GC, D22F-HA, D2ZF-JA, D2AF-RA, DZAF-SA, D2MF-EA, D2MF-FA, D2SF-EA, D2AF-NA, D2AF-MA, D2VF-AA, and D2VF-BA. Footnotes note the D2VF-BA applies with the 3.0 axle and D2MF-EA applies to all except Thunderbird.

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Frequently asked questions

What distributor is used on the 1972 351C-4V with automatic transmission in a Torino?
Distributor number D2ZF-GC (49 states). Its centrifugal advance is 0-½° at 500 RPM, 0-1° at 750, 0-2° at 1000, 4½-6½° at 1500, and 8½-11° at 2000 RPM; vacuum advance is 0-2½° at 5 in. Hg and 6½-9½° at 10, 15, and 20 in. Hg; no vacuum retard values are listed.
How should the test stand be set to check centrifugal advance?
Set the test stand to 0° at 250 RPM and 0 in. Hg, then read degrees of advance at 500, 750, 1000, 1500, and 2000 RPM.
What do the M and A codes in the Transmission column mean?
M means Manual transmission and A means Automatic, per the footnote at the bottom of the table.
What distributor does the 351C-HO Mustang use and what are its vacuum advance specs?
The 351C-HO with manual transmission uses distributor D2ZF-JA. Vacuum advance is 0-3° at 5 in. Hg, 6-9° at 10, and 8½-11½° at both 15 and 20 in. Hg.
What does footnote ① mean for the 460 CID D2VF-BA distributor?
Footnote ① indicates that distributor applies 'With 3.0 Axle.'

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