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Tune-Up Specifications

ENGINE IGNITION TIMING DISTRIBUTOR SPARK PLUGS CARBURETOR No.
Manual Trans. Auto. Trans. Cam Angle Point Gap Type Gap Make & Type
AMERICAN MOTORS  Reg.  Prem.  Reg.  Prem.             
199" 6 Cyl. 10°B(1) 13°B(1) 10°B(1) 13°B(1) 31-34° .016" CH. N-14Y .033-.037" Hol. 1931 1
232" 6 Cyl. 1-Bbl. 5°B(1) 8°B(1) 5°B(1) 8°B(1) 31-34° .016" CH. N-14Y .033-.037" Hol. 1931(2) 2
232" 6 Cyl. 2-Bbl. 5°B(1) 8°B(1) 5°B(1) 8°B(1) 31-34° .016" CH. N-14Y .033-.037" Car. WCD 3
287" V8 2-Bbl. 5°B(1) 8°B(1) 5°B(1) 8°B(1) 30° ± 2° .016" CH. H-14Y .033-.037" Hol. 2209 4
290" V8 2-Bbl. TDC TDC TDC TDC 30° ± 2° .016" CH. N-14Y .033-.037" Hol. 2209 5
290" V8 4-Bbl. ........ TDC ....... TDC 30° ± 2° .016" CH. N-9Y .033-.037" Car. AFB 6
327" V8 2-Bbl. 5°B(1) 8°B(1) 5°B(1) 8°B(1) 30° ± 2° .016" CH. H-14Y .033-.037" Hol. 2209 7
327" V8 4-Bbl. ........ 5°B(1) ........ 5°B(1) 30° ± 2° .016" CH. H-14Y .033-.037" Hol. 4160 8
BUICK                     
225" V6 5°B 5°B 30° ± 1° .016" AC 44S .035" Roch. 2GC 9
300" V8 2 1/2°B 2 1/2°B 30° ±1° .016" AC 44S .035" Roch. 2GC 10
340" V8 2-Bbl. 2 1/2°B 2 1/2°B 30° ±1° .016" AC 44S .035" Roch. 2GC 11
340" V8 4-Bbl. 2 1/2°B 2 1/2°B 30° ± 1° .016" AC 44S .035" Car. AFB 12
400" V8 4-Bbl. 2 1/2°B 2 1/2°B 30° ± 1° .016" AC 44S .035" Car. AFB 13
401" V8 4-Bbl. 2 1/2°B 2 1/2°B 30° ± 1° .016" AC 44S .035" Roch. 4GC(3) 14
425" V8 4-Bbl. 2 1/2°B 2 1/2°B 30° ± 1 ° .016" AC 44S .035" Roch. 4MC 15
425" V8 2-4 Bbl. ............... 12°B 30° ± 1° .016" AC 44S .035" (2) Car. AFB 16
CADILLAC                     
429" V8 (No A.I.R.) ............... 5°B 30° ± 2° .016" AC 44 .035" Car. AFB (1) 17
429" V8 (A.I.R.) ............... 5°B 30° ± 2° .016" AC 44 .035" Car. AFB (1) 18
CHEVROLET                     
153" 4 Cyl. 4°B 4°B 31-34° .019" AC 46N .035" Car. YF 19
194" 6 Cyl. 8°B 8°B 31-34° .019" AC 46N .035" Roch. BV 20
194" 6 Cyl. A.I.R. 3°B 3°B 31-34° .019" AC 46N .035" Car. YF 21
230" 6 Cyl. 4°B 4°B 31-34° .019" AC 46N .035" Roch. BV 22
230" 6 Cyl. A.I.R. 4°B 4°B 31-34° .019" AC 46N .035" Car. YF 23
250" 6 Cyl. 6°B 6°B 31-34° .019" AC 46N .035" Roch. BV 24
250" 6 Cyl. A.I.R. 6°B 6°B 31-34° .019" AC 46N .035" Car. YF 25
283" V8 195 HP 4°B 4°B 30° ± 2° .016" AC 45 .035" Roch. 2GV 26
  A.I.R. 195 HP 4°B 4°B 30° ± 2° .016" AC 45 .035" Roch. 2GV 27
283" V8 220 HP 4°B 4°B 30° ± 2° .016" AC 45 .035" Roch. 4GC 28
  A.I.R. 220 HP 4°B 4°B 30° ± 2° .016" AC 45 .035" Roch. 4GC 29
327" V8 275 HP 8°B 8°B 30° ± 2° .016" AC 44 .035" Car. AVS (3) 30
  A.I.R. 275 HP 8°B 2°A 30° ± 2° .016" AC 44 .035" (4) 31
327" V8 300 HP 6°B 6°B 30° ± 2° .016" AC 44 .035" Hol. 4160 32
  A.I.R. 300 HP 6°B 4°A 30° ± 2° .016" AC 44 .035" Hol. 4160 33
327" V8 350 HP 10°B .............. 30° ± 2° .016" AC 44 .035" Hol. 4160 34
  A.I.R. 350 HP 10°B .............. 30° ± 2° .016" AC 44 .035" Hol. 4160 35
396" V8 325 HP 4°B 4°B 30° ± 2° .016" AC 43N .035" (4) 36
  A.I.R. 325 HP 4°B 4°B 30° ± 2° .016" AC 43N .035" (4) 37
396" V8 360 HP 4°B 4°B 30° ± 2° .016" AC 43N .035" (4) 38
  A.I.R. 360 HP 4°8 4°B 30° ± 2° .016" AC 43N .035" (4) 39
396" V8 375 HP 10°B ........... 30° ± 2° .016" AC 43N .035" Hol. 4150 40
427" V8 390 HP 4°B 4°B 30° ± 2° .016" AC 43N .035" (4) 41
  A.I.R. 390 HP 4°B 4°B 30° ± 2° .016" AC 43N .035" (4) 42
427" V8 425 HP 8°B ............. 30° ± 2° .016" AC 43N .035" Hol. 4150 43
IGNITION TIMING: B  - BTDC.
A  - ATDC.
SPARK PLUGS: AL  - AUTOLITE.
CH.  - CHAMPION.
CARBURETORS: Car.  - CARTER.
Hol.  - HOLLEY.
Roch.  - ROCHESTER.
Str.  - STROMBERG.
A.I.R. - Air Guard - Thermactor  - Air Injection type Exhaust Emission Control.
C.A.P. - Engine MOD - Imco - CCS.  - Exhaust Emission Control without Air Injection.
No. HOT IDLE FAST IDLE Initial Idle Mixture Remarks
Manual Trans. Auto. Trans. Manual Trans. Auto. Trans.
RPM Cam Step RPM Cam Step
1 550 (4)(3) 550 (4)(5) 1500 (3) 2nd 1600 2nd 1 1/4 turn
(1) Air Guard Cars - TDC±1°.
(2) Carter RBS also used.
(3) Add 25 RPM with Air Guard.
(4) 500 RPM with Air Cond. (Air Cond. ON & Auto. Trans. in Neutral).
(5) 1600 RPM with Air Guard.
(6) 1800-1900 RPM with Air Guard.
2 550 (4)(3) 550 (4)(5) 1400 (5) High 2000 (3) High 1 3/4 turn
3 550 (4)(3) 550 (4)(6) 1800-2000(6) High 1800-2000(4) High 1 1/2 turn
4 500 (4) 550 (4) 1800 High 1800 High 1 1/2 turn
5 550 (4) 550 (4) 2000 High 2000 High 1 1/2 turn
6 550 (4) 550 (4) 2000 High 2000 High 1 1/2 turn
7 550 (4) 550 (4) 1800 High 1800 High 1 1/2 turn
8 550 (4) 550 (1) 2000 High 2000 High 1 1/2 turn
9 550 (1) 550 (2) (2) .......... (1) .......... 1 1/2 turn
(7) Add 50 RPM with Air Cond. (Air Cond. OFF) or A.I.R. (except 425 HP - 2 carb.).
(8) Correct when hot idle set as specified.
(9) Car. AFB also used.
10 550 (1) 550 (2) (2) .......... (1) .......... 1 1/2 turn
11 550 (1) 550 (2) (2) .......... (1) .......... 1 1/2 turn
12 550 (1) 550 (1) 600 Low 600 Low 1 1/2 turn
13 500 (1) 500 (1) 600 Low 600 Low 1 1/2 turn
14 500 (1) 500 (1) 600 Low 600 Low 1 1/2 turn
15 500 (1) 500 (2) 600 Low 600 Low 1 1/2 turn
16 ............... 550 ............... .......... 600 Low 1 turn
17 ............... 480 (3) ............... .......... 1700-1750 High 2 1/2 turn
(10) Roch. 4GC also used.
(11) Air Conditioning ON.
(12) Air Conditioning OFF.
18 ............... 550 (12) ............... .......... 1700-1750 High 2 1/2 turn
19 450-500 (1) (2) .......... (2) .......... 1 1/2 turn
(13) Low as possible for smooth idling and to prevent creep and harsh shifts.
(14) Correct when hot idle set as specified.
(15) Roch. 4MV also used.
(16) Roch. 4MV or Hol. 4160.
(17) Air Cond. OFF (except as noted).
20 450-500 (1) (2) .......... (2) .......... 1 1/2 turn
21 600 (1) (2) .......... (2) .......... 1 1/2 turn
22 450-500 (1) (2) .......... (2) .......... 1 1/2 turn
23 600 (1) (2) .......... (2) .......... 1 1/2 turn
24 450-500 (1) (2) .......... (2) .......... 1 1/2 turn
25 600 (1) (2) .......... (2) .......... 1 1/2 turn
26 450-500 450-500 (1) (2) .......... (2) .......... 1 1/2 turn
27 700 (5) 600 (5) (2) .......... (2) .......... 1 1/2 turn
28 450-500 450-500 (1) (2) .......... (2) .......... 1 1/2 turn
29 700 (5) 600 (5) (2) .......... (2) .......... 1 1/2 turn
30 450-500 450-500 (1) 2200 High 2200 High 1 1/2 turn
31 700 (5) 600 (5) 2200 High 2200 High 1 1/2 turn
32 450-500 450-500 (1) 2200 High 2200 High 1 1/2 turn
33 700 (5) 600 (5) 2200 High 2200 High 1 1/2 turn
34 650-750 ............... 2200 High ............... .......... 1 1/2 turn
35 700 (5) ............... 2200 High ............... .......... 1 1/2 turn
36 450-500 450-500 (1) 2000 High 2000 High 1 1/2 turn
37 500 500 (1) 2000 High 2000 High 1 1/2 turn
38 500-600 500-600 (1) 2000 High 2000 High 1 1/2 turn
39 600 550 (1) 2000 High 2000 High 1 1/2 turn
40 850 ............... 2200 High ............... .......... 1 1/2 turn
41 500-600 500-600 (1) 2000 High 2000 High 1 1/2 turn
42 600 550 (1) 2000 High 2000 High 1 1/2 turn
43 750-850 ............... 2200 High ............... .......... 1 1/2 turn
ENGINE IGNITION TIMING DISTRIBUTOR SPARK PLUGS CARBURETOR No.
Manual Trans. Auto. Trans. Cam Angle Point Gap Type Gap Make & Type
CHRYSLER CORP.                 
170" 6 Cyl. 5°B 5°B 40-45° .017-.023" CH. N-14Y .035" Car. BBS 44
  170" C.A.P. 5°A 5°A 40-45° .017-.023" CH. N-14Y .035" Car. BBS 45
225" 6 Cyl. 2 1/2°B 2 1/2°B 40-45° .017-.023" CH. N-14Y .035" Hol. 1920 46
  225" C.A.P. 5°A 5°A 40-45° .017-.023" CH. N-14Y .035" Hol. 1920 47
273" V8 2-Bbl. 5°B 10°B 28-32° .014-.019" CH. N-14Y .035" Car. BBD 48
  C.A.P. 2-Bbl. 5°A 5°A 28-32° .014-.019" CH. N-14Y .035" Car. BBD 49
273" V8 4-Bbl. 10°B 10°B 27-31.°(1) .014-.019" CH. N-9Y .035" Car. AFB 50
  C.A.P. 4-Bbl. 5°A 5°A 27-31.°(1) .014-.019" CH. N-9Y .035" Car. AFB 51
318" V8 2-Bbl. 5°B 10°B 28-32° .014-.019" CH. J-14Y .035" Strom. WW 52
  C.A.P. 2-Bbl. 3-5°A 3-5°A 28-32° .014-.019" CH. J-14Y .035" Strom. WW 53
361" V8 2-Bbl. 12 1/2°B 12 1/2°B 28-32° .014-.019" CH. J-14Y .035" Car. BBD 54
  C.A.P. 2-Bbl. 5°A TDC 28-32° .014-.019" CH. J-14Y .035" Car. BBD 55
383" V8 2-Bbl. 12 1/2°B 12 1/2°B 28-32° .014-.019" CH. J-14Y .035" Car. BBD (2) 56
  C.A.P. 2-Bbl. 5°A TDC 28-32° .014-.019" CH. J-14Y .035" Car. BBD (2) 57
383" V8 4-Bbl. 12 1/2°B 12 1/2°B 28-32° .014-.019" CH. J-13Y(3) .035" Car. AFB 58
  C.A.P. 4-Bbl. 5°A TDC 28-32° .014-.019" CH. J-13Y(3) .035" Car. AFB 59
426" V8 4-Bbl. 12 1/2°B 12 1/2°B 28-32° .014-.019" CH. J-13Y(3) .035" Car. AFB 60
  C.A.P. 4-Bbl. TDC(7) TDC 28-32° .014-.019" CH. J-13Y(3) .035" Car. AFB 61
426" Hemi 4-Bbl. 12 1/2°B 12 1/2°B 27-32°(8) .014-.019" CH. N-10Y .035" (2) Car. AFB 62
  C.A.P. 4-Bbl. 12 1/2°B 12 1/2°B 27-32°(8) .014-.019" CH. N-10Y .035" (2) Car. AFB 63
440° V8 4-Bbl. 12 1/2°B 12 1/2°B 28-32° .014-.019" CH. J-13Y(3) .035" Car. AFB 64
  C.A.P. 4-Bbl. TDC(7) TDC 28-32° .014-.019" CH. J-13Y(3) .035" Car. AFB 65
CORVAIR                 
Std. 95 HP 6°B 14°B 31-34° .019" AC 46FF .035" Roch. HV 66
  95 HP A.I.R. 9°A 4°A 31-34° .019" AC 46FF .035" Roch. HV 67
High Perf. 110 HP 14°B (1) 14°B (1) 31-34° .019" AC 44FF .035" Roch. HV 68
  110" HP A.I.R. 1°A 4°B 31-34° .019" AC 44FF .035" Roch. HV 69
4 x 1 Bbl. 140 HP 18°B 18°B 31-34° .019" AC 44FF .035" Roch. HV, H 70
  140 HP A.I.R. 3°B 8°B 31-34° .019" AC 44FF .035" Roch. HV, H 71
Turbochgr. 180 HP 24°B ............... 31-34° .019" AC 44FF .035" Car. YH 72
FORD MOTOR CO.                 
170" 6 Cyl. 6°B 12°B 37-42° .025" AL. BF82 .032-.036" Ford 1-Bbl. 73
  Thermactor TDC TDC 37-42° .025" AL. BF82 .032-.036" Ford 1-Bbl. 74
200" 6 Cyl. 6°B 12°B 37-42° .025" AL. BF82 .032-.036" Ford 1-Bbl. 75
  Thermactor TDC TDC 37-42° .025" AL. BF82 .032-.036" Ford 1-Bbl. 76
240" 6 Cyl. 6°B 10°B 37-42° .025" AL. BF42 .032-.036" Ford 1-Bbl. 77
  Thermactor TDC 4°B 37-42° .025" AL. BF42 .032-.036" Ford 1-Bbl. 78
289" V8 2-Bbl. 6°B 6°B 26-31° .017" AL. BF42 .032-.036" Ford 2-Bbl. 79
  Thermactor TDC TDC 26-31° .017" AL. BF42 .032-.036" Ford 2-Bbl. 80
289" V8 4-Bbl. 6°B 6°B 26-31° .017" AL. BF42 .032-.036" Ford 4-Bbl. 81
  Thermactor TDC TDC 26-31° .017" AL. BF42 .032-.036" Ford 4-Bbl. 82
289" V8 271 HP 12°B 12°B (1) (1) AL. BF42 .032-.036" Ford 4-Bbl. 83
  352" V8 4-Bbl. ............... 10°B 26-31° .017" AL. BF42 .032-.036" Ford 4-Bbl. 84
  Thermactor ............... 6°B 26-31° .017" AL. BF42 .032-.036" Ford 4-Bbl. 85
390" V8 2-Bbl. 10°B 10°B 26-31° .017" AL. BF42 .032-.036" Ford 2-Bbl. 86
  Thermactor 6°B 6°B 26-31° .017" AL. BF42 .032-.036" Ford 2-Bbl. 87
390" V8 4-Bbl. 10°B 10°B (1) (1) AL. BF42 .032-.036" Ford 4-Bbl.(2) 88
  Thermactor 6°B 6°B (1) (1) AL. BF42 .032-.036" Ford 4-Bbl.(2) 89
410" V8 4-Bbl. 10°B 10°B 26-31° .017" AL. BF42 .032-.036" Ford 4-Bbl. 90
  Thermactor 6°B 6°B 26-31° .017" AL. BF42 .032-.036" Ford 4-Bbl. 91
427" V8 2 x 4-Bbl. 8°B .......... (1) (1) AL. BF32 .028-.032" Hol. 4-Bbl. 92
428" V8 4-Bbl. 10°B 10°B (1) (1) AL. BF42 .032-.036" Ford 4-Bbl. 93
  Thermactor 6°B 6°B (1) (1) AL. BF42 .032-.036" Ford 4-Bbl. 94
428" V8 Police 12°B 12°B (1) (1) AL. BF32 .028-.032" Ford 4-Bbl. 95
  Thermactor 12°B 12°B (1) (1) AL. BF32 .028-.032" Ford 4-Bbl. 96
462" Lincoln ............... 10°B (1) (1) AL. BTF-42 .032-.036" Car. AFB 97
  Thermactor ............... 10°B (1) (1) AL. BTF-42 .032-.036" Car. AFB 98
IGNITION TIMING: B  - BTDC.
A  - ATDC.
SPARK PLUGS: AL  - AUTOLITE.
CH.  - CHAMPION.
CARBURETORS: Car.  - CARTER.
Hol.  - HOLLEY.
Roch.  - ROCHESTER.
Str.  - STROMBERG
No. HOT IDLE FAST IDLE Initial Idle Mixture Remarks
Manual Trans. Auto. Trans. Manual Trans. Auto. Trans.
RPM Cam Step RPM Cam Step
44 550 550 (6) 700 Low 700 Low 1-2 turn
(1) Each set (double breaker) 36-40° (both sets together).
(2) Str. WWC also used.
(3) CH. J-10Y (police).
(4) 500 RPM with Air Cond. ON (Stromberg).
(5) 1300 RPM (Stromberg).
(6) Auto. Trans. in Neutral, Air Cond. ON (when used).
(7) With Distr. 2642532. 5°A with Distr. 2642369.
(8) Each set (double breaker). 36-40° (both sets together).
(9) Adjust for Air-Fuel Ratio of 14.2:1 using Exhaust Gas Analyzer.
45 700 650 (6) 1550 High 1550 High (9)
46 550 550 (6) 700 Low 700 Low 2 turn
47 650 650 (6) 1550 High 1550 High (9)
48 500 500 (6) 700 Low 700 Low 1-2 turn
49 700 650 (6) 1400 2nd 1500 2nd (9)
50 600 600 (6) 625 Low 700 Low 1-2 turn
51 700 650 (6) 1500 2nd 1600 2nd (9)
52 500 500 (6) 700 Low 700 Low 1 1/4 turn
53 650 600 (6) 1400 2nd 1600 2nd (9)
54 500 500 (6) 700 Low 700 Low 2 turn
55 650 600 (6) 1600 2nd 1400 2nd (9)
56 500 500 (6) 700 Low 700 Low 1 1/2 turn
57 650 600 (4) 1600 2nd 1400 (5) 2nd (9)
58 500 500 (6) 700 Low 700 Low 1-2 turn
59 650 600 (6) 1500 2nd 1500 2nd (9)
60 500 500 (6) 700 Low 700 Low 1-2 turn
61 650 600 (6) 1500 2nd 1500 2nd (9)
62 750 750 (6) 1500 2nd 1500 2nd 1-2 turn
63 750 750 (6) 1800 Low 1800 Low (9)
64 500 500 (6) 700 Low 700 Low 1-2 turn
65 650 600 (6) 1400 2nd 1400 2nd (9)
66 450-500 (3) 450-500 (2) (4) .......... (4) .......... 1 1/2 turn
(10) 24°B on Air Cond. Cars.
(11) Set as low as possible.
(12) On Air Cond. cars, adjust solenoid 50 RPM higher.
(13) .078" clearance between idle speed screw and throttle lever on 2nd. step of cam.
67 700 (3) 600(3) (4) .......... (4) .......... 1 1/2 turn
68 600-650 (3) 450-500 (2) (4) .......... (4) .......... 1 1/2 turn
69 700 (3) 600 (3) (4) .......... (4) .......... 1 1/2 turn
70 600-650 (3) 450-500 (2) (4) .......... (4) .......... 1 1/2 turn
71 700 (3) 600 (3) (4) .......... (4) .......... 1 1/2 turn
72 800-850 (3) ............... ............... ......... ............... ...............  
73 575-600 500-525 1400 2nd 1500 2nd 1 1/2 turn
(14) Conventional Ignition: Cam Angle 26-31°, Point Gap.017". Transistor Ignition: Cam Angle 22-24°, Point Gap.019-.021".
(15) Hol. 4-Bbl. used on GT & GTA.
74 625-650 550-575 1300 2nd 1500 2nd 1 1/2 turn
75 575-600 500-525 1400 2nd 1500 2nd 1 1/2 turn
76 625-650 500-575 1300 2nd 1500 2nd 1 1/2 turn
77 500-525 500-525 1500 2nd 1600 2nd 1 1/2 turn
78 625-650 525-550 1500 2nd 1600 2nd 1 1/2 turn
79 575-600 475-500 1400 High 1600 High 1 1/2 turn
80 610-635 525-550 1400 High 1600 High 1 1/2 turn
81 575-600 475-500 1400 High 1600 High 1 1/2 turn
82 610-635 525-550 1400 High 1600 High 1 1/2 turn
83 750-775 525-550 1400 High 1600 High 1 1/2 turn
84 ............... 475-500 ............... .......... 1500 High 1 1/2 turn
85 ............... 525-550 ............... .......... 1500 High 1 1/2 turn
86 475-500 475-500 1300 High 1500 High 1 1/2 turn
87 525-550 525-550 1300 High 1500 High 1 1/2 turn
88 575-600 475-500 1200 High 1300 High 1 1/2 turn
89 610-635 525-550 1300 High 1500 High 1 1/2 turn
90 575-600 475-500 1200 High 1300 High 1 1/2 turn
91 610-635 525-550 1300 High 1500 High 1 1/2 turn
92 700-800 ............... 1800 High ............... .......... 1 1/2 turn
93 575-600 475-500 1200 High 1300 High 1 1/2 turn
94 610-635 525-550 1300 High 1500 High 1 1/2 turn
95 575-600 550-575 1200 High 1300 High 1 1/2 turn
96 610-635 525-550 1200 High 1300 High 1 1/2 turn
97 ............... 450-475 ............... .......... 1600 High 1 1/2 turn
98 ............... 500-525 ............... .......... 1600 2nd 1 1/2 turn
A.I.R. - Air Guard - Thermactor  - Air Injection type Exhaust Emission Control
C.A.P. - Engine MOD - Imco - CCS.  - Exhaust Emission Control without Air Injection
ENGINE IGNITION TIMING DISTRIBUTOR SPARK PLUGS CARBURETOR No.
Manual Trans. Auto. Trans. Cam Angle Point Gap Type Gap Make & Type
JEEP                 
L4 & F4 5°B (2) ............... 42° .020" CH. J-8 .030" Car. YF 99
225" V6 5°B (3) ............... 29-31°(1) .016" AC 44S .035" Roch. BC (6) 100
230" OHC 6 Cyl. 5°B ............... 38° .020" CH. L-12Y .030" Hol. 1920 (5) 101
232" 6 Cyl. TDC (4) TDC (4) 31-34° .016" CH. N-14Y .035" Car. RBS 102
327" V8 5°B 5°B 28-32° .016" CH. H-14Y .035" Hol. 2300 (7) 103
OLDSMOBILE                 
250" 6 Cyl. 6°B 6°B 31-34° .019" AC 46N .035" Roch. BV 104
  A.I.R. 6°B 6°B 31-34° .019" AC 46N .035" Car. YF 105
330" 2-Bbl. 7 1/2°B (1) 7 1/2°B (1) 30° ± 2° .016" AC 45S (6) .030" Roch. 2GC 106
  A.I.R. 2-Bbl. 7 1/2°B (1) 7 1/2°B (1) 30° ± 2° .016" AC 45S (6) .030" Roch. 2GC 107
330" 4-Bbl. 7 1/2°B (1) 7 1/2°B(1) (2) 30° ± 2° .016" AC 44S .030" Roch. 4MV 108
  A.I.R. 4-Bbl. 7 1/2°B(1) (2) 7 1/2°(1) (2) 30° ± 2° .016" AC 44S .030" Roch. 4MV 109
400" V8 4-Bbl. 7 1/2°B (1) 7 1/2°B(1) 30° ± 2° .016" AC 445 .030" Roch. 4MV 110
  A.I.R. 4-Bbl. 7 1/2°B (1) 7 1/2° (1) 30° ± 2° .016" AC 44S .030" Roch. 4MV 111
400" V8 x 2-Bbl. 7 1/2°B (1) ............... 30° ± 2° .016" AC 44S .030" Roch. 2GV, 2G 112
425" V8 2-Bbl. 7 1/2°B (2) 7 1/2°B(2) 30° ± 2° .016" AC 45S (6) .030" Roch. 2GC 113
  A.I.R. 2-Bbl. 7 1/2°B (1) 7 1/2°B (1) 30° ± 2° .016" AC 45S (6) .030" Roch. 2GC 114
425" V8 4-Bbl. 7 1/2°B (1) 7 1/2°B (1) 30° ± 2° .016" AC 44S .030" Roch. 4MV 115
  A.I.R. 4-Bbl. 7 1/2°B (1) 7 1/2°B (1) 30° ± 2° .016" AC 44S .030" Roch. 4MV 116
PONTIAC                 
230" 6 1-Bbl. 5°B 5°B 31-34° .020" AC 44S .035" Roch. BV 117
  A.I.R. 1-Bbl. 5°A 5°A 31-34° .020" AC 44S .035" Roch. BV 118
230" 6 4-Bbl. 5°B 5°B 31-34° .020" AC 44S .035" Roch. 4MV 119
  A.I.R. 4-Bbl. 5°A 5°A 31-34° .020" AC 44S .035" Roch. 4MV 120
326" V8 2-Bbl. 6°B 6°B 30° ± 2° .016" AC 45SC (1) .035" Roch. 2GC 121
  A.I.R. 2-Bbl. 4°A 6°B 30° ± 2° .016" AC 45S (1) .035" Roch. 2GC 122
326" V8 4-Bbl. 6°B 6°B 30° ± 2° .016" AC 45S (1) .035" Car. AFB 123
  A.I.R. 4-Bbl. ............... 6°B 30° ± 2° .016" AC 45S (1) .035" Car. AFB 124
389" V8 2-Bbl. 6°B 6°B 30° ± 2° .016" AC 45S (1) .035" Roch. 2GC 125
  A.I.R. 2-Bbl. ............... 6°B 30° ± 2° .016" AC 45S (1) .035" Roch. 2GC 126
389" V8 4-Bbl. 6°B 6°B 30° ± 2° .016" AC 45S (2) .035" Car. AFB 127
  A.I.R. 4-Bbl.   6°B 30° ± 2° .016" AC 45S (2) .035" Car. AFB 128
389" V8 3 x 2-Bbl. 6°B 6°B 30° ± 2° .016" AC 44S .035" Roch. 2GV, 2G 129
  A.I.R. 3 x 2-Bbl. 4°B ............... 30° ± 2° .016" AC 44S .035" Roch. 2GV, 2G 130
421" V8 4-Bbl. 6°B 6°B 30° ± 2° .016" AC 44S .035" Car. AFB 131
421" V8 3 x 2-Bbl. 6°B 6°B 30° ± 2° .016" AC 44S .035" Roch. 2GV, 2G 132
421" HO 3 x 2-Bbl. 6°B 6°B 30° ± 2° .016" AC 44S .035" Roch. 2GV, 2G 133
STUDEBAKER                 
194" 6 Cyl. 6-14°B 6-14°B 31-34° .016-.019" AC 46N .033-.038" Roch. BV 134
230" 6 Cyl. 4-8° B 4-8° B 31-34° .016-.019" AC 46N .033-.038" Roch. BV 135
283" V8 2-Bbl. 3-5° B 3-5° B 28-32° .016-.019" AC 45 .033-.038" Roch. 2GV 136
IGNITION TIMING: B  - BTDC.
A  - ATDC.
SPARK PLUGS: AL  - AUTOLITE.
CH.  - CHAMPION.
CARBURETORS: Car.  - CARTER.
Hol.  - HOLLEY.
Roch.  - ROCHESTER.
Str.  - STROMBERG.
A.I.R. - Air Guard - Thermoctor  - Air Injection type Exhaust Emission Control.
C.A.P. - Engine MOD - Imco - CCS.  - Exhaust Emission Control without Air Injection.
No. HOT IDLE FAST IDLE Initial Idle Mixture Remarks
Manual Trans. Auto. Trans. Manual Trans. Auto. Trans.
RPM Cam Step RPM Cam Step
99 600 ............... ............... .......... ............... .......... 1 1/2 turn
(1) 29°±3° (Prestolite).
(2) TDC Distr. 1AY-4401 A, B.
(3) TDC Distr. 1AT-4502A.
(4) TDC Distr. 1110340.
(5) 2-Bbl. Hol. 2300.
(6) Roch. 2G also used.
(7) 4-Bbl. Hol. 4160.
(8) Correct when hot idle set.
100 550 ............... (8) .......... ............... .......... 1 1/2 turn
101 590-600 ............... 2100 (5) 2nd ............... .......... 1 1/2 turn
102 550 500 (8) .......... (8) .......... 1 1/2 turn
103 550 500 1700-1800 High 1700-1800 High 1 1/2 turn
104 500 (4) 500 (4) (3) .......... (3) .......... 1 1/2 turn
(9) Set at 850 RPM (V8s).
(10) L.C. only. Set H.C. 310 HP. Eng. at 5°B (all at 850 RPM).
(11) Correct when hot idle set as specified.
(12) 50 RPM higher with Air Cond. (Air Cond. OFF).
(13) 75 RPM higher with Air Cond. (Air Cond. OFF).
(14) L.C. Cars only (AC 44S for H.C. Cars).
105 600 (4) 600 (4) (3) .......... (3) .......... 1 1/2 turn
106 600 500 (5) 900 Low 900 Low 1 1/2 turn
107 600 600 900 Low 900 Low 1 1/2 turn
108 600 500 700 Low 700 Low 2 turns
109 600 500 700 Low 700 Low 2 turns
110 600 550 (4) 700 Low 700 Low 2 turns
111 600 600 (4) 700 Low 700 Low 2 turns
112 600 ............... (11) .......... ............... .......... ...............
113 550 500 (13) 900 Low 900 Low 1 1/2 turn
114 550 500 (13) 900 Low 900 Low 1 1/2 turn
115 550 500 (13) 700 Low 700 Low 2 turns
116 550 500 (13) 700 Low 700 Low 2 turns
117 600 (21) 500 (21) (17) .......... (17) .......... 1 1/2 turn
(15) AC 44S (Trailer PKg. & Police), AC 43S (HD).
(16) AC 44S (Tempest GTO).
(17) Correct when hot idle set as specified.
(18) 700 RPM Air Cond. Cars (Air Cond. OFF).
(19) 575 RPM Air Cond. Cars (Air Cond. OFF).
(20) 675 RPM Air Cond. Cars (Air Cond. OFF).
(21) With Air Cond. ON. adjust Idle Speed-Up for same RPM with max. cooling (except 4-Bbl. Auto Trans. no AIR cars, set 575 RPM).
(22) With cam follower on high step, turn fast idle screw 3 turns after contact with fast idle lever.
118 700 (21) 600 (21) (17) .......... (17) .......... 1 1/2 turn
119 600 (21) 500 (21) (22) High (22) High 2 turns
120 700 600 (22) High (22) High 2 turns
121 600 (18) 500 (19) (17) .......... (17) .......... 1 1/2 turn
122 700 600 (20) (17) .......... (17) .......... 1 1/2 turn
123 600 (18) 500 (19) 2500 High 2800 High 1 turn
124 ............... 600 ............... .......... 2500 High 1 turn
125 600(18) 500 (19) (17) .......... (17) .......... 1 1/2 turn
126 ............... 600 ............... .......... (17) .......... 1 1/2 turn
127 600 (18) 500 (19) 2500 High 2800 High 1 turn
128 ............... 600 2500 High 2500 High 1 turn
129 600 (18) 600 (20) (17) .......... (17) .......... 1 1/2 turn
130 700 ............... (17) .......... ............... .......... 1 1/2 turn
131 600 (18) 500 (19) 2500 High 2800 High 1 turn
132 600 (18) 500 (19) (17) .......... (17) .......... 1 turn
133 600 (18) 600 (20) (17) .......... (17) .......... 1 1/2 turn
134 525 500-520 (23) .......... (23) .......... 1 1/2 turn
(23) Correct when hot idle set as specified.
135 525 500-520 (23) .......... (23) .......... 1 1/2 turn
136 525 500-520 (23) .......... (23) .......... 1 1/2 turn
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