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Tune-Up Specifications

ENGINE IGNITION TIMING DISTRIBUTOR SPARK PLUGS CARBURETOR No.
Synchro. Trans. Auto. Trans. Cam Angle Point Gap Type Gap Make & Type
AMERICAN MOTORS                 
199" & 232" 6 Cyl. 3° BTDC (2) 3° BTDC (2) 31-34° .016" CH. N14Y .033-.037" Car. YF 1
232" 6 Cyl. 2 Bbl. 3° BTDC (2) 3° BTDC (2) 31-34° .016" CH. N14Y .033-.037" Car. WCD 2
304" V8 2 Bbl. 5° BTDC (2) 5° BTDC (2) 29-31° .016" CH. N12Y .033-.037" Ford 2100D 3
360" V8 2 Bbl. 5° BTDC (2) 5° BTDC (2) 29-31° .016" CH. N12Y .033-.037" Ford 2100D 4
360" V8 4 Bbl. 5° BTDC (2) 5° BTDC (2) 29-31° .016" CH. N12Y .033-.037" Ford 4300 5
390" V8 4 Bbl. (2) (2) 29-31° .016" CH. N12Y .033-.037" Ford 4300 6
BUICK                 
250" 6 Cyl. 0° TDC 4° BTDC 30-34° .019" AC R46N .035" Roch. MV 7
350" V8 2 Bbl. 6° BTDC 6° BTDC 29-31° .016" AC R45TS .030" Roch. 2GV 8
350" V8 4 Bbl. 6° BTDC 6° BTDC 29-31° .016" AC R45TS .030" Roch. 4MV 9
455" V8 4 Bbl. 6° BTDC 6° BTDC 29-31° .016" AC R44TS .030" Roch. 4MV 10
455" V8 Stage 1 10° BTDC 10° BTDC 29-31° .016" AC R44TS .030" Roch. 4MV 11
CADILLAC                 
472" V8 - 7.5° BTDC 28-32° .016" AC R46N .035" Roch. 4MV 12
500" V8 - 7.5° BTDC 28-32° .016" AC R46N .035" Roch. 4MV 13
CHEVROLET                 
153" 4 Cyl. 0° TDC 4° BTDC 31-34° (1).019" (2)AC R46N .035" Roch. M 14
230" & 250" 6 Cyl. 0° TDC 4° BTDC 31-34° (1).019" AC R46T .035" Roch. MV 15
307" V8 200 HP. 2° BTDC 8° BTDC 28-32° (1).019" AC R43 .035" Roch. 2GV 16
350" V8 250 HP. 0° TDC 4° BTDC 28-32° (1).019" AC R44 .035" Roch. 2GV 17
350" V8 300 HP. 0° TDC 4° BTDC 28-32° (1).019" AC R44 .035" Roch. 4MV 18
350" V8 350 HP. 4° BTDC - 28-32° (1).019" AC R44 .035" Roch. 4MV 19
350" V8 350 HP.(4)     28-32° (1).019" AC R43 .035" Roch. 4MV 20
350" V8 360 & 370 HP.(5)     28-32° (1)-019" AC R43 .035" Hoi. 4150 21
400" V8 265 HP. 4° BTDC 8° BTDC 28-32° (1).019" AC R44 .035" Roch. 2GV 22
402" V8 330 HP.(6) 4° BTDC 4° BTDC 28-32° (1).019" AC R44T .035" Roch. 4MV 23
402" V8 350 HP.(6) 0° TDC 4° BTDC 28-32° (1).019" AC R44T .035" Roch. 4MV 24
402" V8 375 HP.(6) 4° BTDC 4° BTDC 28-32° (1).019" AC R43T .035" Hol. 4150 25
454" V8 345 HP. 6° BTDC 6° BTDC 28-32° (1).019" AC R44T .035" Roch. 4MV 26
454" V8 360 & 390 HP. 6° BTDC 6° BTDC 28-32° (1).019" AC R43T .035" Roch. 4MV 27
454" V8 450 & 460 HP.(7) 4° BTDC 4° BTDC 28-32° (1).019" AC R43T .035" Hol. 4150 28
CHRYSLER CORP.                 
198" 6 Cyl. 2 1/2° BTDC TDC 41-46° .017-.023" CH. N14Y .035" Car. BBS 29
225" 6 Cyl. TDC TDC 41-46° .017-.023" CH. N14Y .035" Hol. 1920 30
318" V8 TDC TDC 30-34° .014-.019" CH. N14Y .035" Car. BBD 31
340" V8 5° BTDC 5° BTDC (3)30-34° .014-.019" CH. N9Y .035" Car. AVS 32
383" V8 2-Bbl. TDC 2 1/2 BTDC 28 1/2-32 1/2° .016-.021" CH. J14Y .035" Car. BBD 3-3
383" V8 2-Bbl. - 2 1/2° BTDC 28 1/2-32 1/2° .016-.021" CH. J14Y .035" Hol. 2210 34
383" V8 4-Bbl. TDC 2 1/2° BTDC 28 1/2-32 1/2° .016-.021" CH. J11Y .035" Car. AVS 35
383" V8 4-Bbl. HP. TDC 2 1/2° BTDC 28 1/2-32 1/2° .016-.021" CH. J11Y .035" Hol. 4160 36
440" V8 4-Bbl. - 5° BTDC 28 1/2-32 1/2° .016-.021" CH. J13Y .035" Hol. 4160 37
440" V8 Hi Perf. TDC 2 1/2° BTDC 28 1/2-32 1/2° .016-.021" CH. J11Y .035" Car. AVS 38
440" V8 3 2-Bbl. 5° BTDC 5° BTDC (3) .014-.019" CH. J11Y .035" (3)Hol. 2300 39
426" Hemi-Hd. TDC 5° BTDC (3) .014-.019" CH. N10Y .035" (1)Car. AFB 40
FORD MOTOR CO.                 
170" 6 Cyl. 6° BTDC 6° BTDC (1) (1) AL. BF-82 .032-.036" Car. YF 41
200" 6 Cyl. 6° BTDC 6° BTDC (1) (1) AL. BF-82 .032-.036" Car. YF 42
240" 6 Cyl. 6° BTDC 6° BTDC (1) (1) AL. BF-42 .032-.036" Car. YF 43
240" (Taxi & Police) 6° BTDC 6° BTDC (1) (1) AL. BT F6 .032-.036" Car. YF 44
250" 6 Cyl. 6° BTDC 6° BTDC (1) (1) AL. BF-82 .032-.036" Car. RBS 45
SPARK PLUGS: AL  - AUTOLITE. CH.  - CHAMPION.
CARBURETORS: Cor.  - CARTER Hol.  - HOLLEY Roch  - ROCHESTER.
No. HOT IDLE FAST IDLE Initial Idle Mixture Air Fuel Ratio Remarks
Synchro Trans.() Auto. Trans. () Synchro Trans. Auto. Trans.
RPM Cam Step RPM Cam Step
1 600 550 2300 High 2300 High (3) 14:1 (1) - 13.5:1 "Air Guard".
(2) - Timing set at 500 RPM. On 390" set 5° BTDC before Engine Code 290x26, TDC on 209 x 26 and on.
(3) - Limiter Caps used.
2 600 550 2000 High 2000 High (3) 14:1
3 650 600 1600 2nd 1600 2nd (3) (1)14:1
4 650 600 1600 2nd 1600 2nd (3) (1)14:1
5 650 600 1600 2nd 1600 2nd (3) (1)14:1
6 650 600 1600 2nd 1600 2nd (3) (1)14:1
7 750/400 600/400 900 Low 650 Low 4 Turns (2) (2) - Air/fuel ratio not available. Tune engine for smoothest idle with highest vacuum reading at leanest mixture setting.
8 700 600 720 Low 650 Low 2 Turns (2)
9 700 600 720 Low 650 Low 2 Turns (2)
10 700 600 720 Low 650 Low 2 Turns (2)
11 700 600 720 Low 650 Low 2 Turns (2)
12 - 600 - - (1)1900-1950 High 6 Turns (2) (1) - Trans. in Neutral, Air cond. off.
(2) - See Buick (2)
13 - 600 - - (1)1900-1950 High 6 Turns (2)
14 750 650 2400 High 2400 High - (8) (1) -.016" for used points.
(2) - Colder use ACR44N.
(4) - Corvette.
(5) - 360 HP (Camaro). 370 HP (Corvette).
(6) - 396" & 400" Engine with 3.76" stroke.
(7) - 450 HP (except Corvette), 460 HP (Corvette).
(8) - Air/fuel ratio not available. Tune engine for smoothest idle with highest vacuum reading at leanest mixture setting.
15 750/400 600/400 2400 High 2400 High 4 Turns (8)
16 700/450 600/450 - - - - 4 Turns (8)
17 750/450 600/450 - - - - 4 Turns (8)
18 700 600 2400 2nd 2400 2nd 4 Turns (8)
19 750 - 2400 2nd - - - (8)
20 750 - - - - - - (8)
21 300 750 2200 High 2200 High - (8)
22 700/400 600/400 - - - - 4 Turns (8)
23 700 600 2400 2nd 2400 2nd 4 Turns (8)
24 700 600 2400 2nd 2400 2nd 4 Turns (8)
25 750 700 2200 High 2200 High - (8)
26 - 600 2400 2nd 2400 2nd 4 Turns (8)
27 700 600 2400 2nd 2400 2nd 4 Turns (8)
28 700 700 2200 High 2200 High (4) (8)
29 750 750 1800 - 1800 - (4) 14.2:1 (1) - Taxis 650 RPM.
(2) - Taxis 1700 RPM.
(3) - Dual points set to 27-32° each for combined dwell of 37-42°.
(4) - Limiter Caps used.
30 (1)700 650 (2)1600 - (2)1800 - (4) 14.2:1
31 750 700 1600 2nd 2000 2nd (4) 14.2:1
32 950 900 2000 2nd 2000 2nd (4) 14.2:1
33 750 650 1700 2nd 1700 2nd (4) 14.2:1
34 - 650 - - 1700 2nd (4) 14.2:1
35 - 700 - - 1700 2nd (4) 14.2:1
36 750 750 2000 2nd 1800 2nd (4) 14.2:1
37 - 650 - - 1600 2nd (4) 14.2:1
38 900 800 2000 2nd 1800 2nd (4) 14.2:1
39 900 900 2200 2nd 1800 2nd (4) 14.2:1
40 900 900 2000 2nd 2000 2nd (4) 14.2:1
41 (4)750 (4)550 - - - - (11) 14.45:1 (1) - Dual diaphragm dist. 35-40° cam angle.027" point gap. Single diaphragm dist. 37-42° cam angle.025" point gap. Cont. on Page T-41. 
42 (4)750 (4)550 - - - - (11) (12)
43 800/500 500 - - - - (11) (12)
44 800/500 500 - - - - (11) (12)
45 750/500 (8)600/500 - - - - (11) 14.2:1
(1) Idle Solenoid used; Higher RPM (Solenoid Connected), Lower RPM (Solenoid Disconnected).
ENGINE IGNITION TIMING DISTRIBUTOR SPARK PLUGS CARBURETOR No.
Synchro. Trans. Auto. Trans Cam Angle Point Gap Type Gap Make & Type
FORD MOTOR CO. (Cont.)                 
302" 6° BTDC 6° BTDC (2) (2) AL.BF-42 .035" Ford 2100D 46
302" Boss 16° BTDC - (3) .020" AL.AF-32 .035" Hol. 4150C 47
351" C 2-Bbl. 6° BTDC 6° BTDC (2) (2) AL.AF-42 .035" Ford 2100D 48
351" C 4-Bbl. 6° BTDC 6° BTDC (2) (2) (5)AL.AF-42 .035" Ford 4300 49
351" W 2-Bbl. 6° BTDC 10° BTDC (2) (2) AL.BF-42 .035" Ford 2100D 50
390" 2-Bbl. 6° BTDC 6° BTDC (2) (2) AL.BF-42 .035" Ford 2100D 51
428" Police - 6° BTDC (2) (2) AL.BF-32 .035" Ford 4300 52
428" CJ & SCJ 6° BTDC 6° BTDC (3) .020" AL.BF-32 .035" Hol.4150C 53
429" 2-Bbl. 4° BTDC 4° BTDC (2) (2) AL.BF-42 .035" Ford 2100D 54
429" 4-Bbl. 4° BTDC 4° BTDC (2) (2) (6)AL.BF-42 .035" Ford 4300 55
429" CJ 10° BTDC 10° BTDC (2) (2) AL.AF-32 .035" Roch. 4MV 56
429" SCJ 10° BTDC 10° BTDC (2) (2) AL.AF-32 .035" Hol. 4150C 57
429" Boss 10° BTDC - (3) .020" AL.AF-32 .035" Hol. 4150C 58
460" (Lincoln) - 4° BTDC 26-31° .017" AL.BF-42 .035" Ford 4300 59
JEEP                 
F-134 4 Cyl. 0° TDC 0°TDC 42° .020" CH. J8 .030" Car. YF 60
232" 6 Cyl. 3°BTDC 3° BTDC 31-34° .016" CH. N-14Y .035" Car. RBS 61
225" V-6 0°TDC 0°TDC 26-32° .016" AC44-S .035" Roch. 2GC 62
350" V-8 5°BTDC 5°BTDC 30° .016" AC R45TS .030" Roch. 2GV 63
OLDSMOBILE                 
250" 6 Cyl. TDC 4° BTDC 31-34° (1).019" AC R46T .035" Roch MV 64
350" V8 2-Bbl.                
F-85 & Cutlass 10° BTDC 10° BTDC 30° .016" AC R46S .030" Roch. 2GC 65
88 & 98 8° BTDC 8° BTDC 30° .016" AC R46S .030" Roch. 2GC 66
350" V8 4-Bbl.                
All (Std.) 10° BTDC 10° BTDC 30° .016" AC R45S .030" Roch. 4MC 67
With Air Ind.(6) 14° BTDC 14° BTDC 30° .016" AC R43S .030" Roch. 4MC 68
455" V8 2-Bbl. 8° BTDC 8° BTDC 30° .016" (3)AC R45S .030" Roch. 2GC 69
455" V8 4-Bbl.                
F-85 & Cutlass 12° BTDC 12° BTDC 30° .016" AC R44S .030" Roch. 4MC 70
With Air Ind.(7) (4)8° BTDC (5)8° BTDC 30° .016" AC R44S .030" Roch. 4MC 71
Vista Cruiser - 8° BTDC 30° .016" AC R45S .030" Roch. 4MC 72
Police (W-33 Eng.) - 12° BTDC 30° .016" AC R44S .030" Roch. 4MC 73
88 & 98 - 8° BTDC 30° .016" AC R45S .030" Roch. 4MC 74
With Air Ind.(7) 8° BTDC 8° BTDC 30° .016" AC R44S .030" Roch. 4MC 75
Toronado - 8° BTDC 30° .016" AC R45S .030" Roch. 4MC 76
With Air Ind.(8) - 12° BTDC 30° .016" AC R44S .030" Roch. 4MC 77
PONTIAC                 
250" 6 Cyl. TDC 4° BTDC 31-34° (1).019" AC R46T .035" Roch. MV 78
350" V8 2-Bbl. 9° BTDC 9° BTDC 30° (1).019" AC R46S .035" Roch. 2GV 79
400" V8 2-Bbl. 9° BTDC 9° BTDC 30° (1).019" AC R45S .035" Roch. 2GV 80
400" V8 4-Bbl. 9° BTDC 9° BTDC 30° (1).019" AC R45S .035" Roch. 4MV 81
400" V8 Ram Air IV 15° BTDC 15° BTDC 30° (1).019" AC R44S .035" Roch. 4MV 82
455" V8 4-Bbl. 9° BTDC 9° BTDC 30° (1).019" AC R45S .035" Roch. 4MV 83
SPARK PLUGS: AL  - AUTOLITE.
CH.  - CHAMPION.
CARBURETORS: Car.  - CARTER.
Hol.  - HOLLEY.
Roch.  - ROCHESTER.
No. HOT IDLE FAST IDLE Initial Idle Mixture Air Fuel Ratio Remarks
Synchro Trans. (1) Auto. Trans. (1) Synchro Trans. Auto Trans.
RPM Cam Step RPM - Cam Step
46 800/500 (3)600/500 1400 2nd 1500 2nd (6) (7) (2) - Dual diaphragm dist. 24-29° cam angle.021" point gap. Single diaphragm dist. 26-31° cam angle.017" point gap.
(3) - Dual points set to 25 1/2-26° each for combined dwell of 30-33°.
(4) - Air cond. & solenoid, 850/500 synchro 600/500 auto.
(5) - AF-42 to correct plug fouling.
(6) - BRF-42 (T-Bird).
Additional footnotes at bottom of page. 
47 800/500 - 2150 2nd - - (6) 13.5:1
48 900/500 (2)600/500 1500 2nd 1500 2nd (6) (7)
49 800/500 (2)600/500 1250 2nd 1400 2nd (6) (7)
50 750/500 (3)600/500 1300 2nd 1600 2nd (6) (7)
51 750/500 (3)600/500 1400 2nd 1500 2nd (6) (7)
52 - (2)600/500 - - 1600 2nd (6) 14.3:1
53 (2)725/500 (2)675/500 1900 2nd 2100 2nd (6) (7)
54 - (5)600/500 - - 1400 2nd (6) (7)
55 700 600 1400 - 1300 2nd (6) (7)
56 (2)700/500 (2)650/500 750 3rd 1850 2nd (6) (7)
57 700/500 650/500 2400 2nd 2200 2nd (6) -
58 700/500 - 2200 2nd - - (6) 14.2:1
59 - 600 - - 1250 Index 1 1/2 Turns 12.05:1
60 (1) 700-750 (1) 700-750 - - - - (2) - (1) - In Neutral (All Transmissions)
(2) - Limiter caps used.
61 (1) 650-700 (1) 650-700 - - - - (2) -
62 (1) 650-700 (1) 650-700 - - - - 2 Turns -
63 (1) 650-700 (1) 650-700 - - - - (2) -
64 750/400 600/400 750 Low 900 Low 4 Turns (3) (1) -.016" for used points.
(3) - R46S on 88 & 98 models.
(4) - 12° BTDC at 850 RPM with super prem. fuel.
(5) - 10° BTDC at 850 RPM with super prem. fuel.
(6) - W-31 Engine.
(2) - W-30 Engine.
(3) - W-34 Engine.
(4) - Air/fuel ratio not available. Tune engine for smoothest idle with highest vacuum reading at leanest mixture setting.
65 750 575 900 Low 900 Low 6 Turns (4)
66 675 575 900 Low 900 Low 6 Turns (4)
67 650 575 1000 Low 1000 Low 6 Turns (4)
68 750 625 1000 Low 1000 Low 6 Turns (4)
69 675 575 900 Low 900 Low 6 Turns (4)
70 750 600 1000 Low 950 Low 6 Turns (4)
71 750 600 1000 Low 1050 Low 6 Turns (4)
72 - 575 - - 950 Low 6 Turns (4)
73 - 600 - - 950 Low 6 Turns (4)
74 - 575 - - 950 Low 6 Turns (4)
75 - 600 - - 950 Low 6 Turns (4)
76 - 600 - - 950 Low 6 Turns (4)
77 - 600 - - 950 Low 6 Turns (4)
78 750/400 600/400 2400 High 2400 High 3/5 Turns (2) (1) -.016" for used points.
(2) - Air/fuel ratio not available. Tune engine for smoothest idle with highest vacuum reading at leanest mixture setting.
79 800 650 - - - - 3-5 Turns (2)
80 800 650 - - - - 3-5 Turns (2)
81 950 650 2000 High 2000 High 3-5 Turns (2)
82 1000/650 750/500 2800 High 2800 High 3-5 Turns (2)
83 950 650 2000 High 2000 High 3-5 Turns (2)
(1) Idle Solenoid used: Higher RPM (Solenoid Connected), Lower RPM (Solenoid Disconnected).Ford Motor Co. Additional Footnotes 
(2) Set at higher RPM (cars without solenoid).
(3) 550 RPM (cars without solenoid).
(4) 575 RPM (cars without solenoid).
(5) 590 RPM (cars without solenoid).
(6) Limiter caps used.
(7) Ford Motor Co. Air/Fuel Ratios
  Synchro-mesh Auto. Trans.
200" 6 14.45:1 14.2:1
240" 6 14.45:1 14.7:1
302" 2-Bbl. 14.0:1 13.8:1
351" C 2-Bbl. 14.0:1 14.0:1
351" C 4-Bbl. 14.4:1 14.5:1
351" W 2-Bbl. 14.0:1 14.0:1
390" 2-Bbl. 14.1:1 14.4:1
428" (1) & (2) 13.8:1 14.3:1
429" 2-Bbl.   13.5:1
429" 4-Bbl. 14.5:1 14.5:1
429" (1) 14.4:1 14.5:1
(1) CJ - Cobra Jet
(2) SCJ - Super Cobra Jet
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