Tune-Up Specifications

ENGINE	IGNITION TIMING		DISTRIBUTOR		SPARK PLUGS		CARBURETOR	No.
ENGINE	Man. Trans.	Auto. Trans.	Cam Angle	Point Gap	Type	Gap	Make & Type	No.
AMERICAN MOTORS
232", 258" 6 Cyl.	3° B (1)	5° B (1)	31-34°	.016"	CH. N-14Y	.035"	Car. YF	1
304", 360" V8 2-Bbl.	2.5° B (1)	2.5° B (1)	29-31°	.016"	CH. N-12Y	.035"	Ford 2100D	2
360", 401" V8 4-Bbl.	2.5° B (1)	2.5° B (1)	29-31°	.016"	CH. N-12Y	.035"	Ford 4300	3
BUICK
250" 6 Cyl.	4° B	4° B	30-34°	.019"	AC R46TS	.035"	Roch. MV	4
350" V8 2-Bbl.	6° B (1)	4° B (1) (2)	29-31°	.016"	AC R45TS	.030"	Roch. 2GV	5
350" V8 4-Bbl.	6° B (1)	4° B (1)	29-31 °	.016"	AC R45TS	.030"	Roch. 4MV	6
455" V8 4-Bbl.	6° B (1)	4° B (1) (2)	29-31°	.016"	AC R44TS	.030"	Roch. 4MV	7
CADILLAC
472" V8 4-Bbl.	...............	8° B (1)	30°	.016"(2)	AC R46N	.035"	Roch. 4MV	8
500" V8 4-Bbl.	...............	8° B (1)	30°	.016"(2)	AC R46N	.035"	Roch. 4MV	9
CHEVROLET
140" 4 Cyl. 1-Bbl.	6° B (1)	6° B (2)	31-34°	.019"	AC R42TS(3)	.035"	Roch. MV	10
140" (G.T.) 2-Bbl.	6° B (1)	10° B (2)	31-34°	.019"	AC R42TS(3)	.035"	Roch. 2GV	11
250" 6 Cyl. 1-Bbl.	4° B (2)	4° B (5)	31-34°	.019"	AC R46TS	.035"	Roch. MV	12
307" V8 2-Bbl.	4° B (2)	8° B (2)	29-31 °	.019"	AC R45TS	.035"	Roch. 2GV	13
350" V8 245 HP.	2° B (6)	6° B (2)	29-31°	.019"	AC R45TS	.035"	Roch. 2GV	14
350" V8 270 HP.	4° B (6) (7)	8° B (2)	29-31°	.019"	AC R44TS	.035"	Roch. 4MV	15
350" V8 330 HP.	8° B (1)	12° B (1)	29-31°	.019"	AC R44TS	.035"	Hol. 4150	16
350" V8 330 HP. Corvette	8° B (1)	12° B (1)	(8)	(8)	AC R44TS	.035"	Hol. 4150	17
400" V8 255 HP.	4° B (2)	8° B (2)	29-31°	.019"	AC R44TS	.035"	Roch. 2GV	18
402" V8 300 HP.	8° B (6)	8° B (6)	29-31°	.019"	AC R44TS	.035"	Roch. 4MV	19
454" V8 365 HP.	8° B (6)	8° B (6)	29-31°	.019"	AC R42TS	.035"	Roch. 4MV	20
454" V8 425 HP.	8° B (1)	12° B (1)	29-31°	.019"	AC R42TS	.035"	Hol. 4150	21
CHRYSLER CORP.
198" 6 Cyl.	2.5° B	2.5° B	41-46°	.017-.023"	CH. N-14Y	.035"	Car. BBS	22
225" 6 Cyl.	TDC (1)	TDC (1)	41-46°	.017-.023"	CH. N-14Y	.035"	Hol. 1920	23
318" V8 2-Bbl.	TDC	TDC	30-34°	.014-.019"	CH. N-14Y	.035"	Car. BBD (2)	24
340" V8 4-Bbl.	5° B	5° B	30-34°(3) (5)	.014-.019"	CH. N-9Y	.035"	Car. T.Q.	25
340" V8 3 2-Bbl.	2.5° B	2.5° B	30-34°	.014-.019"	CH. N-9Y	.035"	Hol. 2300	26
360" V8 2-Bbl.	2.5° B	2.5° B	30-34°	.014-.019"	CH. N-13Y	.035"	Hol. 2210	27
383" V8 2-Bbl.	TDC	2.5° B	28.5-32.5°	.016-.021"	CH. J-14Y (8)	.035"	Car. BBD	28
383" & 400" V8 2-Bbl.	TDC	2.5° B	28.5-32.5°	.016-.021"	CH. J-11Y	.035"	Hol. 4160 (6)	29
426" Hemi 2 4-Bbl.	TDC	5° B	27-32°(3)	.014-.019"	CH. N-10Y	.035"	Car. AFB	30
440" V8 4-Bbl.	5° B	5° B	28.5-32.5°	.016-.021"	CH. N-13Y (7)	.035"	Car. AVS	31
440" V8 Hi. Perf.	TDC	2.5° B	28.5-32.5°	.016-.021"	CH. J-11Y	.035"	Car. AVS	32
440" V8 3 2-Bbl.	TDC	2.5° B	27-32°(2)	.014-.019"	CH. J-11Y	.035"	Hol. 2300	33
FORD MOTOR CO.
1600 cc 4 Cyl.	12° B (1)	...............	38-42°	.025"	AL. AGR22	.030"	Ford 1-Bbl.	34
2000 cc 4 Cyl.	10° B (1)	10° B (1)	38-42°	.025"	AL. BRF32	.025"	Weber DFAV	35
170" 6 Cyl.	6° B	............	33-38° (3)	.027" (3)	AL. BRF82	.034"	Car. YF	36
700" 6 Cyl.	6° B	6° B	33-38° (3)	.027" (3)	AL. BRF82	.034"	Car. YF	37
240" 6 Cyl.	6° B	6° B	33-38° (3)	.027" (3)	AL. BRF42	.034"	Car. YF	38
250" 6 Cyl.	6° B	6° B	33-38° (3)	.027" (3)	AL. BRF82	.034"	Car. RBS	39
302" V8 2-Bbl.	6° B	6° B	24-29° (5)	.021" (5)	AL. BRF42	.034"	Ford 2-Bbl.	40
302" V8 "Boss"	16° B	............	32-35°	.020"	AL. BRF32	.034"	Hol. 4150C	41
351" C V8 2-Bbl	6° B	6° B	24-29°(5)	.021"(5)	AL. ARF42	.034"	Ford 2-Bbl.	42
351" W V8 2-Bbl.	6° B	6° B	24-29°(5)	.021"(5)	AL. BRF42	.034"	Ford 2-Bbl.	43
351" CV8 4-Bbl.	6° B	6° B	24-29°(5)	.021"(5)	AL. ARF42	.034"	Ford 4-BM.	44
IGNITION TIMING: B - BTDC. A - ATDC. SPARK PLUGS: AL - AUTOLITE. CH. - CHAMPION. CARBURETORS: Car. - CARTER. Hol. - HOLLEY. Roch. - ROCHESTER. Str. - STROMBERG.

No.

HOT IDLE ⁽¹⁾

FAST IDLE

IDLE CO %

Air Fuel Ratio

Remarks

Man. Trans.

Auto. Trans.

Man. Trans. Auto. Trans.

RPM

Cam Step

RPM

Man.

Auto.

700

600

2300

High

2300

......

(2)

(1) At 500 RPM. 5° BTDC on 258".
(2) 13.5 with Air Guard. 14.0 (±.2) with Engine Mod.

750

650

1600

Index

1600

......

(2)

750

650

1600

Mid.

1600

......

(2)

550

500

850

Low

650

......

(1) At 600 RPM.
(2) 10° on Skylark, G.S., Sportwagon, Stage 1.
(3) 800 RPM on Skylark, G.S., Sportwagon.

700 (3)

600

820

Low

650

......

700 (3)

600

820

Low

650

......

700

600

720

Low

650

........

..................

600/400

..............

High

2100

........

......

........

(1) At 600 RPM.
(2) Correct when dwell is 30°

................

600/400

..............

High

2100

........

......

........

850/700

650/550

2400

High

2400

2.0

......

(1) At 700 RPM.
(2) At 550 RPM.
(3) For colder plugs use AC R41TS.
(4) Correct when Hot Idle Set.
(5) At 500 RPM.
(6) At 600 RPM.
(7) 8° on Corvette.
(8) Transistorized Ignition.

1200/700

700/550

(4)

......

(4)

2.0

........

550

500

2400

High

2400

1.0

........

600

550

(4)

........

.. (4)

0.5

......

600

550

(4)

........

(4)

0.5

......

600

550

1350

2nd

1500

0.5

........

700

2200

High

2200

........

.......

........

700

2200

High

2200

........

......

........

600

550

(4)

........

(4)

0.5

........

600

1350

2nd

1500

1.0

.........

600

1350

2nd

1500

1.0

........

700

2200

High

2200

......

........

800

1900

2nd

1800

......

14.2

(1) 2.5° BTDC with Nox.
(2) Also used Roch. 2GV.
(3) With dual points, set individually to 27-32°. Combined dwell is 37-42°.
(4) 1800 with Roch. 2GV.
(5) Not required on Electronic Ignition.
(6) Also uses Car. AVS.
(7) Imperial uses RJ13Y.
(8) 400" uses J-NY.

750

1600

2nd

1900

......

14.2

750

700

1600

2nd

1900 (4)

....

......

14.2

900

1800

2nd

1800

......

........

14.2

950

1000

2600

2nd

2800

......

........

14.2

750

700

1800

2nd

1800

........

14.2

750

700

1900

2nd

1700

........

14.2

...............

800

...............

2nd

1700

........

14.2

950

2300

2nd

2300

........

14.2

..................

750

................

2nd

1800

........

14.2

900

2100

2nd

1800

........

14.2

900

1800

2nd

1800

........

14.2

900/550 (2)

..................

1700

2nd

..............

1.5

.......

(12)

(1) At 600 RPM
(2) 650/500 with air cond.
(3) With single diaphragm distributor, point gap is.025", cam angle is 34-39.5°
(4) 600/500 with air cond.
(5) With single diaphragm distributor, point gap is.017", cam angle is 26-31°.
(6) 14.5 on manual. 14.2 on auto.
(7) Fast idle is bench operation.
(8) Additional footnotes at bottom of page 13.
(12) 13.4-13.9
(13) 800/500 with air cond.

750 (2)

650/500 (2)

1600

2nd

1800

........

......

750 (2)

..................

1450

(7)

..............

1.0

......

(6)

(13) 750 (2)

550 (4)

1750

(7)

2000

1.0

1.5

(6)

800/500 (2)

600/500 (2)

1250

(7)

1650

1.0

0.5

14.5

750/500 (2)

600/500 (2)

1600

(7)

1600

1.5

14.2

800/500

600/500 (2)

1400

(11)

1500

0.3

0.4

(8)

825/500

...............

2100

(11)

..............

......

13.50

750/500

625/500

1500

(11)

1500

0.2

..........

775/500

575 (4)

1300

(11)

1600

0.2

(8)

825/500

625/500

1250

2nd

1400

1.1

0.5

(8)

⁽¹⁾	When Idle Solenoid used: Higher RPM (Solenoid Connected), Lower RPM (Solenoid Disconnected).

ENGINE	IGNITION TIMING		DISTRIBUTOR		SPARK PLUGS		CARBURETOR	No.
ENGINE	Man. Trans.	Auto. Trans.	Cam Angle	Point Gap	Type	Gap	Make & Type	No.
FORD MOTOR CO. (Cont.)
390" V8 2-Bbl.	...............	6° B	24-29°(5)	.021" (5)	AL. BRF42	.034"	Ford 2-Bbl.	45
400" V8 2-Bbl.	...............	6° B	24-29°(5)	.021" (5)	AL. ARF42	.034"	Ford 2-Bbl.	46
429" V8 2-Bbl.	...............	6° B	24-29°(5)	.021" (5)	AL. BRF42	.034"	Ford 2-Bbl.	47
429" V8 4-Bbl.	4° B	4° B	24-29 (5)	.021" (5)	AL. BRF42	.034"	Ford 4-Bbl.	48
429" V8 C.J.	10° B (4)	10° B	30-33° (5)	.021" (5)	AL. AF32	.034"	Roch. 4MV	49
429" V8 SCJ, Ram Air	10° B	10° B	24-29° (5)	.021" (5)	AL. AF32	.034"	Hol. 4150C	50
460" V8 Lincoln	...............	10° B	27-31.5°	.014-.020"	AL. BRF42	.034"	Ford 4-Bbl.	51
JEEP
134" 4 Cyl.	TDC	TDC	42°	.020"	CH. J-8	.030"	Car. YF	52
225" V6	TDC	TDC	29°	.016"	CH. UJ-12Y	.035"	Roch. 2G	53
232" 6 Cyl.	3° B	3° B	31-34°	.016"	CH. N-14Y	.035"	Car. RBS	54
258" 6 Cyl.	5° B	5° B	31-34°	.016"	CH. N-14Y	.035"	Car. YF	55
304" & 360" V8	2.5° B	2.5° B	29-31°	.016"	CH. N-12Y	.035"	Ford 2100	56
350" V8	5° B	5° B	28-32°	.016"	AC R45TS	.030"	Roch. 2GV	57
OLDSMOBILE
250" 6 Cyl.	4° B	4° B	32°	.019"	AC R46TS	.035"	Roch. MV	58
350" V8 2-Bbl.	10° B (1)	10° B (1)	30°	.016"	AC R46TS	.040"	Roch. 2GC	59
350" V8 4-Bbl.	10° B (1)	12° B (1)	30°	.016"	AC R45TS	.040"	Roch. 4MC	60
455" V8 2-Bbl.	...............	8° B (1)	30°	.016"	AC R46TS	.040"	Roch. 2GC	61
455" V8 320 HP	...............	8° B (1)	30°	.016"	AC R46TS	.040"	Roch. 4MC	62
455" V8 340 HP	10° B (1)	10° B (1)	30°	.016"	AC R45TS	.040"	Roch. 4MC	63
350 HP	12° B (2)	10° B (2)	30°	.016"	AC R45TS	.040"	Roch. 4MC	64
PONTIAC
250" 6 Cyl.	4° B	4° B	32.5°	.019"(1)	AC R46TS	.035"	Roch. MV	65
307" V8	4° B (3)	8° B (3)	29-31 °	.019"	AC R45TS	.035"	Roch. 2GV	66
350" V8 2-Bbl.	12° B	12° B	30°	.019"(1)	AC 47S	.035"	Roch. 2GV	67
400" V8 2-Bbl.	............	8° B	30°	.019"(1)	AC 47S	.035"	Roch. 2GV	68
400" V8 4-Bbl.	12° B	12° B	30°	.019"(1)	AC R46S	.035"	Roch. 4MC	69
455" V8 2-Bbl.	............	12° B	30°	.019"(1)	AC R46S	.035"	Roch. 2GV	70
455" V8 325 HP	............	12° B	30°	.019"(1)	AC R46S	.035"	Roch. 4MV	71
455" V8 335 HP	12° B	12° B	30°	.019"(1)	AC R46S	.035"	Roch. 4MV	72
IGNITION TIMING: B - BTDC. A - ATDC SPARK PLUGS: AL - AUTOLITE. CH. - CHAMPION. CARBURETORS: Car. - CARTER. Hol. - HOLLEY. Roch. - ROCHESTER. Str: - STROMBERG.

No.

HOT IDLE ⁽¹⁾

FAST IDLE

IDLE CO %

Air Fuel Ratio

Remarks

Man. Trans.

Auto. Trans.

Man. Trans. Auto. Trans.

rpm

Cam Step

RPM

Man.

Auto.

................

600/475

................

(5)

1500

......

⁽²⁾

(4) 600/500 with air cond.
(5) With single diaphragm distributor, point gap is.017", cam angle is 26-31°.
⁽²⁾ Additional footnotes at bottom of page.
(9) 6° BTDC on Calif. Cars.
(10) 700/500 on man. with air cond. 650/500 on auto, with air cond.
(11) Kickdown step.

................

625

................

(11)

1500

......

0.7

⁽²⁾

................

600 (4)

..............

(11)

1400

......

0.2

⁽²⁾

700

600

1400

(11)

1350

0.2

14.50

700 (10)

600/500

1800

2nd

2000

0.3

14.5

700 (10)

650/500

2200

High

2400

0.3

0.2

14.20

................

600

...............

(11)

1250

......

0.9

14.2

700-750

................

......

........

(1) Transmission in neutral.
(2) Correct when Hot Idle set.
(3) Transmission in drive.

650/700

650/700 (1)

(2)

........

(2)

......

650/700

650/700 (1)

1800

fast

1800

......

650-700

600 (3)

2300

2nd

2300

......

........

700-750

650 (3)

1600

2nd

1600

......

........

650/700

650/700 (1)

(2)

........

(2)

......

........

550

500

750

Low

900

1.0

......

(1) At 1100 RPM.
(2) At 850 RPM.
(3) 650 RPM on 442 with air cond. & heavy duty clutch.

750

600

1000

Low

1000

0.6

........

750

600

1050

Low

1050

0.3

0.6

........

750

600

1000

Low

1000

0.6

........

750

600

1050

Low

1050

0.3

0.6

........

750

600

1050

Low

1050

0.3

0.6

........

750 (3)

600

1050

Low

1050

0.3

0.6

........

550

2400

High

2400

1.0

........

(1) Set used points.016", correct at 30° cam angle.
(2) Correct when Hot Idle set.
(3) At 550 RPM

600

550

................

........

................

0.5

........

800

600

(2)

........

(2)

1.0

........

...............

600

...............

........

(2)

......

1.0

........

1000/600

1000/700

1700

High

1700

1.0

1.6

........

...............

650

...............

........

(2)

1.0

........

...............

650

...............

High

1700

1.0

.....

1000/600

1000/700

1700

High

1700

1.0

.....

⁽¹⁾	When Idle Solenoid used: Higher RPM (Solenoid connected, Lower RPM (Solenoid Disconnected).

⁽²⁾	Ford Motor Co. Air/Fuel Ratios

Ford Motor Co. Air/Fuel Ratios

	Synchro-mesh	Auto. Trans.
302" 2-Bbl.	12.05	12.50
351" W	13.50	13.90
351" C 4-Bbl.	14.30	14.40