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Ford Motor Co. Dual Advance Distributor Advance Specifications

NOTE: FOR ENGINE RPM AND DEGREES, MULTIPLY SPECIFICATIONS BELOW BY 2.
Distributor Part No.(1) Rot. (2) Automatic Advance (Distr. Degrees & RPM) Vacuum Advance (Distr. Degrees)
Degs. RPM Degs. RPM Degs. RPM Degs. RPM Degs. RPM Max. Degs. Deg. In.Hg. Deg. In.Hg. Deg. In.Hg. Deg. In.Hg.
C7AF-AA CC 0-1/2 350 4 1/4-6 1/4 750 5 1/4-7 1/2 1000 7/1/2-9 3/4 1500 9 1/2-12 2000 14 0-1/2 5 4-7 1/2 10 8 1/2-11 1/2 15 9-11 1/2 20
C7AF-AC CC 0-1/2 350 4 3/4-6 3/4 750 5 3/4-7 3/4 1000 7 3/4-10 1500 9 3/4-12 2000 14 0-1 5 1-5 10 7-10 15 9 1/2-12 1/2 20
C7AF-L CC 0-1/2 300 2-3 1/4 500 6-7 1/4 1000 8 1/4-9 3/4 1400 9-11 2000 11 0-1 5 1 1/2-4 1/2 10 5 3/4-8 3/4 15 8 1/2-11 1/2 20
C7AF-N CC 0-1/2 300 1 1/2-2 1/2 500 4 1/2-5 3/4 1000 6 3/4-8 1500 8 3/4-10 1/4 2000 14 0-3/4 5 1-43/4 10 7-10 15 9 1/2-12 1/2 20
C7OF-F CC 0-1/2 300 2-3 500 9 1/2-10 1/2 1000 11 1/2-12 1/2 1500 13-14 1/2 2000 16 0-1 5 1-4 3/4 10 7-10 15 8-11 20
C8AF-A C 0-1/2 300 0-1 1/2 750 2 1/4-4 1/2 1000 6-8 1500 7 1/2-10 2000   0-3/4 5 1-3 3/4 10 5 1/2-8 15 5 1/2-8 20
C8AF-B C 0-1/2 350 1 3 1/4-3 3/4 750 2 3/4-5 1000 4 1/2-6 3/4 1500 6 1/4-8 3/4 2000 11 0-1 5 3-6 10 6 1/2-9 15 6 1/2-9 20
C8AF-E CC 0-1/2 350 4 1/2-6 3/4 750 6-8 1/4 1000 8-10 1/4 1500 10-12 1/4 2000 14 0-3/4 5 0-3 10 5 1/4-8 1/2 15 8 1/4-11 20
C8AF-J CC 0-1/2 350 0-2 500 5 1/2-7 3/4 750 6 3/4-11 1500 10 3/4-13 1/4 2000 14 0-1 5 1-5 10 7-10 1/4 20 10 1/4-12 1/2 25
C8AF-R CC 0-1/2 350 0-2 500 5 3/4-7 3/4 1000 7 3/4-10 1500 9 3/4-12 1/4 2000 14 0-3/4 5 1-4 3/4 10 6 3 1/4-9 3/4 15 10-12 1/2 25
C8DF-C C 0-1/2 350 0-2 500 3 1/2-5 1/4 750 6 1/2-8 1/2 1500 9 1/2-12 2000 14 0-1 5 6 3/4-9 1/2 10 10-12 1/2 15 10-12 1/2 20
C8DF-D C 0-1/2 350 2 3/4-4 3/4 750 4 3/4-6 3/4 1000 9-11 1/4 1500 12-14 2000 14 0-1 5 6 1/2-9 1/2 10 8 1/2-11 15 8 1/2-11 20
C8DF-J C 0-1/2 350 3 1/4-5 1/4 750 7-9 1000 9 1/2-11 3/4 1500 12 1/4-14 3/4 2000 16 0-1 5 5 3/4-8 3/4 10 8 1/2-11 15 8 1/2-11 20
C8DF-C CC 0-1/2 350 0-1 3/4 750 6-8 1/2 1000 8-10 1/4 1500 10-12 1/2 2000 14 0-1 5 2-5 10 5 3/4-8 3/4 15 9-11 1/2 25
C8DF-D CC 0-1/2 350 3/4-2 3/4 500 81/2-10 1/2 1000 10/4-12 1/2 1500 12-141/2 2000 16 0-3/4 5 1 3/4-4 3/4 10 6 3/4-9 1/2 15 7-9 1/2 25
C8DF-G CC 0-1/2 350 4 1/2-6 1/2 750 7-8 3/4 1000 8-10 1/4 1500 9-11 1/2 2000   0-1 5 1-4 3/4 10 7-10 15 8 1/2-11 20
C8DF-H CC 0-1/2 350 3/4-2 3/4 500 7 1/2-9 1/2 750 9 1/2-11 3/4 1500 11-13 1/2 2000 14 0-3 1/4 5 2-5 10 7-9 1/2 15 7-9 1/2 20
C8DF-J CC 0-1/2 350 3/4-2 3/4 500 7 1/2-9 1/2 750 9 3/4-12 1500 11-13 1/2 2000 14 0-3/4 5 1-4 3/4 10 7-10 15 8 1/2-11 20
C8VF-A CC 0-1/2 500 2 1/2-4 1/2 750 6 1/2-8 1/2 1000 8-10 1/4 1500 9-11 1/2 2000 14 0-1 5 1-4 10 6-9 15 9 1/2-12 25
C8VF-C CC 0-1/2 500 2 1/4-4 1/2 750 6 1/2-8 1/2 1000 8-10 1/4 1500 9-11 1/2 2000 14 0-3/4 5 1/2-4 10 6-9 15 9 1/2-12 25
C8VF-G CC 0-1/2- 500 3/4-2 3/4 750 4 1/2-6 1/2 1000 6-8 1/4 1500 7-9 1/2 2000 11 0-1 5 1-4 1/2 10 6-9 15 9 1/2-12 25
C9AF-J CC 0-1/2 350 1/2-2 1/2 500 3 1/2-5 1/2 1000 5 3/4-8/4 1500 8 1/4-10 3/4 2000 11 0-1 5 5-8 10 9 1/2-12 1/4 15 10-12 1/2 20
C9AF-K CC 0-1/2 500 2 3/4-4 3/4 750 5 3/4-7 3/4 1000 7 3/4-10 1500 9 3/4-12 3/4 2000 14 0-1 5 3 3/4-6 3/4 10 7-10 15 9-11 1/2 25
C9AF-N CC 0-1/2 350 13/4-3 3/4 500 5 1/2-7 1/2 750 6-8 1/4 1000 8 1/4-10 3/4 2000 .... 0-1 5 3 1/2-6 3/4 10 7 1/2-10 1/2 15 9-11 1/2 20
C9AF-R CC 0-1/2 350 1 3/4-3 3/4 500 5 1/2-7 1/2 750 7 1/4-9 1/2 1500 8 1/4-10 3/4 2000 .... 0-1 5 3/4-6 1/2 10 7 1/2-10 1/2 15 9-11 1/2 20
C9AF-Y CC 0-1/2 350 2-4 500 5 3/8-8 3/4 750 7 1/7-9 1000 9 1/2-12 2000 14 0-1 5 2 3/4-6 10 6-8 1/2 15 6-8 1/2 20
C9DF-B C 0-1 1/2 500 4 1/2-6 1/2 750 7-9 1000 9-11 1/4 1500 11 1/4-13 3/4 2000 14 0-1 5 5 3/4-8 3/4 10 8 1/2-11 15 8 1/2-11 25
C9OF-M CC 0-2 500 4 1/4-6 1/4 750 5 1/4-7 1/2 1000 7 1/2-9 3/4 1500 9 3/4-12 1/4 2000 14 0-1 5 5 1/2-8 10 5 1/2-8 15 5 1/2-8 20
C9OF-N CC 0-1/2 350 0-2 500 3 3/4-5 3/4 750 6 1/4-8 1/4 1000 8 1/2-11 2000 .... 0-1 5 1-4 1/2 10 5 1/2-8 1/2 15 8-10 1/2 20
C9OF-R C 0-2 500 4 1/2-6 1/2 750 5 1/2-7 1/2 1000 7 1/4-9 1/2 1500 9-1 1/2 2000 14 0-3/4 5 3/4-6/4 10 6-8 1/2 15 6-8 1/2 20
C9OF-T CC 0-1/2 350 1/4-2 1/4 500 4 3/4-6 3/4 750 8-10/4 1000 9 1/2-12 2000 .... 0-1 5 5-8 10 8 3/4-11 3/4 15 10-12 1/2 20
C9OF-U C 0-1/2 350 1/4-3 1/4 500 4 1/2-6 1/2 750 5 1/2-7 1/2 1000 8 3/4-11 3/4 2000 .... 0-1/2 5 7-10 10 10-12 1/2 15 10-12 1/2 20
C9OF-V C 0-1/2 350 2 1/4-4 1/2 500 7 3/4-9 3/4 700 9-11 1000 1 3/2-16 2000 16 0-1/2 5 5-7 3/4 10 6 1/2-9 15 6 1/2-9 20
DODF-C C 0-1/2 350 4 3/4-6 3/4 750 9-11 1000 10-12 1/2 1500 11 1/2-13 1/2 2000 7 0-1 5 4-7 10 4 1/2-7 15 4 1/2-7 20
DODF-E C 0-1/2 350 1/4-2 1/2 750 9-9 1000 9 3/4-12 1500 12 1/2-15 2000   0-1 5 5 1/2-8 1/2 10 8 1/2-11 15 8 1/2-11 20
(1) Part No. prefix and suffix stamped on housing. Basic Ford Part No. (omitted) is "12127".
(2) C (Clockwise), CC (counterclockwise) viewed from rotor end.
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