1974 Distributor Specifications

NOTE: FOR ENGINE RPM & DEGREES, MULTIPLY SPECIFICATIONS BELOW BY 2.

BOSCH DISTRIBUTOR ADVANCE SPECIFICATIONS

Distributor Part No.

Rot. ⁽¹⁾

Automatic Advance (Dist. Degrees @ RPM)

Vacuum Advance Dist. Degrees (In. of Hg)

Vacuum Retard Dist. Degrees (In. of Hg)

74HF-CA⁽²⁾

0-2
500

3.5-5.5
750

5.5-7.5
1000

7.5-9.5
1500

10-12
2000

0-2
(5)

1.5-3.5
(10)

1.5-3.5
(15)

1.5-3.5
(20)

0
(5)

0-2.5
(10)

2-4
(15)

2-4
(20)

74HF-JA⁽²⁾

0-.5
500

0-1
750

3-5
1000

6-8
1500

8-10
2000

0
(5)

0-2
(10)

3.5-5.5
(15)

3.5-5.5
(20)

0
(5)

0-3.5
(10)

2-4
(15)

2-4
(20)

74TF-NA⁽²⁾

0.5
500

1-3
750

3.5-5.5
1000

7.5-9.5
1500

8-10
2000

0-1.5
(5)

2-4
(10)

2-4
(15)

2-4
(20)

0
(5)

0-4
(10)

5-7
(15)

5-7
(20)

74TF-TA⁽²⁾

0-.5
500

1-3
750

3.5-5.5
1000

7.5-9.5
1500

8-10
2000

0-1.5
(5)

2-4
(10)

2-4
(15)

2-4
(20)

.....
.....

74TF-RA⁽²⁾

0-.5
500

1-3
750

3.5-5.5
1000

7.5-9.5
1500

8-10
2000

0-1.5
(5)

2-4
(10)

2-4
(15)

2-4
(20)

0
(5)

0-3.5
(10)

24
(15)

2-4
(20)

JFU4⁽³⁾

0
500-600

3.2-7.5
700

14-16
1800

.....
.....

0-.5
(4.5)

2.5
(5)

.....
.....

2.5
(2.9-4)

.....
.....

JFUR4⁽⁴⁾

0
300-500

5
750-940

10
1250-1750

13±1
2400

.....
.....

0
(2.5-4)

3
(4-5)

5±1
(5.9-6.3)

.....
.....

JFUR4⁽⁵⁾

0
500-600

5
675-760

10
1130-1750

10±1
1800

.....
.....

0
(5-9.4)

2
(9-12)

3±.5
(11-12.6)

.....
.....

JFUF⁽⁶⁾

0
375-550

3
625-790

7
960-1125

11±1
1375

.....
.....

0
(2-4)

3
(3.6-5)

.....
.....

JF⁽⁷⁾

0
400-525

3
610-780

7
950-1125

10
1400-1970

12±1
2250

.....
.....

JFUR6⁽⁸⁾

0
425-525

5
625-725

10
1150-1650

.....
.....

055905205⁽⁹⁾⁽¹¹⁾

0
525-675

8-10
1100-1150

9-11.5
1500

13-15
2500

.....
.....

0
(8-9.6)

5.5-7
(13-14)

.....
.....

0
(6-8.6)

4-4.5
(9-11.6)

.....
.....

056905205C⁽⁹⁾⁽¹⁰⁾

0
550-700

7-10
1050-1100

9-11.5
1500

13-15
2500

.....
.....

0
(8-9.6)

5.5-7
(13.8)

.....
.....

0
(6-8.6)

4-4.5
(9-11.6)

.....
.....

022905205AA, 022905205AB

0
500

8.5
750

12.5
1250

15
1700

.....
.....

(1-4)

(7-8)

.....
.....

(1-4)

(5-6)

.....
.....

0231167039

0
500

7
800

8
1000

10
1500

12
2300

0
⁽⁸⁾

3
⁽¹²⁾

4.5
(14)

.....
.....

2
(11)

2.5
(16)

.....
.....

0231310002

6.5-8.5
750

15-17.5
1500

18.5-20
2250

.....
.....

⁽¹³⁾
4.5-6.5

.....
.....

0231170137

7.5-10
750

13.5-16
1500

21-24
2250

.....
.....

Porsche⁽¹³⁾

0
600

⁽¹⁴⁾
3-5

3
800

7
1000

10
1500

15
3000

4.5-5.7
(Max.)

.....
.....

⁽¹⁾	Viewed from rotor.

⁽²⁾	Motorcraft part number.

⁽³⁾	Bosch type number.

⁽⁴⁾	Bosch type number.

⁽⁵⁾	Bosch type number

⁽⁶⁾	Bosch type number.

⁽⁷⁾	Bosch type number.

⁽⁸⁾	Bosch type number.

⁽⁹⁾	Volkswagen part number.

⁽¹⁰⁾	California only.

⁽¹¹⁾	Federal only.

⁽¹²⁾	Porsche 911/911S engines, Bosch or Marelli distributors.

⁽¹³⁾	Retard degrees at idle.

⁽¹⁴⁾	Advance at 2250 distributor RPM.

NOTE: FOR ENGINE RPM & DEGREES, MULTIPLY SPECIFICATIONS BELOW BY 2.

DELCO DISTRIBUTOR ADVANCE SPECIFICATIONS

Distributor Part No.	Rot.	Automatic Advance (Distr. Degrees @ RPM)					Vacuum Advance (Distr. Degrees) Operate Distr. @ 1000 RPM				Vacuum Retard (Distr. Degrees) Operate Distr. @ 1000 RPM
7992115	CC	0 400	4 700	7.5 1600	10 2400	11 2800	..... .....	..... .....	..... .....	..... .....	1 (6)	5 (10)	5 (15)	6 (20)

NOTE: FOR ENGINE RPM & DEGREES, MULTIPLY SPECIFICATIONS BELOW BY 2.

DUCELLIER DISTRIBUTOR ADVANCE SPECIFICATIONS

Distributor Part No.

Centrifugal Advance (Dist. Degrees & RPM)

Vacuum Advance (Dist. Degrees & In. of Hg.)

Deg.

RPM

Deg.

RPM

Deg.

RPM

Deg.

RPM

Deg.

In. Hg.

Deg.

In. Hg.

Deg.

In. Hg.

4240

0-1

600

950

16.8

2000

2350

0-1.5

3.9

4.6

7.8

14.4

4380

0-1

500

1500

11.1

2000

2450

.....

4220

500

1000

1500

2250

6.6

9.3

128

4338

500

1000

1500

2250

0-7.8

.945

7-9

8-10

138

4384A

700

800

1500

1950

.....

4480A

500

850

1500

2400

⁽¹⁾

.....

4481A

500

850

1500

2400

⁽²⁾

.....

4503

500

750

1500

2250

.....

4438

500

750

1500

2250

7.8

1.5

R272-D62

350

1000

2000

2500

.....

⁽¹⁾	Ducellier type number.

⁽²⁾	With vacuum retard operating, distributor retard is 5± 1 1/2° @ 9.84 In. Hg.

NOTE: FOR ENGINE RPM & DEGREES, MULTIPLY SPECIFICATIONS BELOW BY 2.

HITACHI DISTRIBUTOR ADVANCE SPECIFICATIONS

Distributor Part No.

Centrifugal Advance (Dist. Degrees & RPM)

Vacuum Advance (Dist. Degrees & In. of Hg.)

Deg.

RPM

Deg.

RPM

Deg.

RPM

Deg.

RPM

Deg.

In. Hg.

Deg.

In. Hg.

Deg.

In. Hg.

D4A2-01

550

2150

.....

5.91

3.5

9.84

.....

D4A2-02

550

3.75

750

13.5

1975

.....

5.91

6.5

9.65

.....

D6F3-01

500

1600

.....

11.8

18.7

.....

D6F3-02

500

1600

.....

11.8

18.7

.....

D414-60

450

6-8

1200

13-15

2400

.....

7.9⁽¹⁾

5-7.5

15.7⁽¹⁾

8-11

21⁽¹⁾

⁽¹⁾	Vacuum retard.

NOTE: FOR ENGINE RPM & DEGREES, MULTIPLY SPECIFICATION BELOW BY 2.

HONDA DISTRIBUTOR SPECIFICATIONS

Distributor Part No.	Centrifugal Advance (Dist. Degrees & RPM)								Vacuum Advance (Dist. Degrees & In. of Hg.)
Distributor Part No.	Deg.	RPM	Deg.	RPM	Deg.	RPM	Deg.	RPM	Deg.	In. Hg.	Deg.	In. Hg.	Deg.	In. Hg.
Honda	4-6	750	11-13	1500	16-18	2000	.....	.....	5.2	3.9	11.2	48	17	6.8

NOTE: FOR ENGINE RPM & DEGREES, MULTIPLY SPECIFICATIONS BELOW BY 2.

LUCAS DISTRIBUTOR ADVANCE SPECIFICATIONS

Distributor Part No.

Rot. ⁽¹⁾

Automatic Advance (Distr. Degrees @ RPM)

Vacuum Advance Dist. Degrees (In. of Hg)

Vacuum Retard Dist. Degrees (In. of Hg)

25D.4

0
500

1
600

3.4
800

5.7
1000

8.5
1250

.....
.....

2.5-3.5
(10)

.....
.....

23D.4

0
500

1.2
625

3.4
875

4.6
1000

7
1250

.....
.....

22D.6

0
550

1-3.5
700

7-9
1250

10-12
2200

11-13
2500

.....
.....

36DE-12

0
500

.5-2.5
600

6-8
1000

11-13
2600

12-14
3500

.....
.....

7-9
⁽¹⁾

.....
.....

⁽¹⁾	Viewed from rotor.

NOTE: FOR ENGINE RPM & DEGREES, MULTIPLY SPECIFICATIONS BELOW BY 2.

MARELLI DISTRIBUTOR ADVANCE SPECIFICATIONS

Distributor Part No.

Centrifugal Advance (Dist. Degrees & RPM)

Deg.

RPM

Deg.

RPM

Deg.

RPM

Deg.

RPM

S144CAY

500

1000

1500

1800

S103B⁽¹⁾

400

900

1500

2400

S103RA⁽¹⁾

400

900

1500

3400

61015155

600

800

1500

3000

⁽¹⁾	Timing at idle is retarded 2° ATDC.

NOTE: FOR ENGINE RPM & DEGREES. MULTIPLY SPECIFICATIONS BELOW BY 2.

MAZDA DISTRIBUTOR ADVANCE SPECIFICATIONS

Model

Centrifugal Advance (Dist. Degrees & RPM)

Vacuum Advance (Dist. Degrees & In. of Hg.)

Deg.

RPM

Deg.

RPM

Deg.

RPM

Deg.

RPM

Deg.

In. Hg.

Deg.

In. Hg.

Deg.

In. Hg.

B1600, 808

550

3.5

1000

1500

2000

12.6

7.5

21.65

.....

RX-2, RX-3 ⁽¹⁾

0±1.5

500

7.5

1500

.....

0±1.5

3.94

8.5

15.75

.....

RX-3, RX-3 ⁽²⁾

0±1

500

7.5

1500

.....

RX-4. Pick-Up ⁽³⁾

0±1.5

500

2000

.....

0±1

3.94

15.75

.....

RX-4, Pick-Up ⁽⁴⁾

0±1.5

500

2000

.....

0±1.5

3.94

15.75

.....

RX-4, Pick-Up ⁽²⁾

0±1.5

500

2000

.....

⁽¹⁾	Trailing distributor.

⁽²⁾	Leading distributor.

⁽³⁾	Trailing distributor, manual transmission.

⁽⁴⁾	Trailing distributor, automatic transmission.

NOTE: FOR ENGINE RPM & DEGREES, MULTIPLY SPECIFICATIONS BELOW BY 2.

MITSUBISHI DISTRIBUTOR ADVANCE SPECIFICATIONS

Distributor Port No.	Centrifugal Advance (Dist. Degrees & RPM)								Vacuum Advance (Dist. Degrees & In. of Hg.)
Distributor Port No.	Deg.	RPM	Deg.	RPM	Deg.	RPM	Deg.	RPM	Deg.	In. Hg.	Deg.	In. Hg.	Deg.	In. Hg.
T3T03871	-0.3	500	6.2	1000	14	3050	.....	.....	0	6.69	5.25	11.81	8.5	15.75
T3T13671	0	500	7	1400	10	2500	.....	.....	0	8.66	5.25	13.78	8.5	17.72

NOTE: FOR ENGINE RPM & DEGREES, MULTIPLY SPECIFICATIONS BELOW BY 2.

MOTORCRAFT DISTRIBUTOR ADVANCE SPECIFICATIONS

Distributor Part No.⁽¹⁾

Centrifugal Advance (Dist. Degrees & RPM)

Vacuum Advance (Dist. Degrees & In. of Hg.)

Deg.

RPM

Deg.

RPM

Deg.

RPM

Deg.

RPM

Deg.

In. Hg.

Deg.

In. Hg.

Deg.

In. Hg.

D47Z-A⁽²⁾

600

2200

.....

8.7

7.5

17.7

.....

D47Z-B⁽³⁾

660

2200

.....

10.6

7.5

19.7

.....

D30F-FA

0-1

500⁽⁴⁾

1-3

1000

5.5-8

1500

10.5-13

2000

0-3

5⁽⁵⁾

2.5-5

20⁽⁶⁾

⁽¹⁾	Basic part number is 12127.

⁽²⁾	Manual transmission.

⁽³⁾	Automatic transmission.

⁽⁴⁾	Calibrate test stand to 0° @ 250 RPM & 0 In. Hg.

⁽⁵⁾	Calibrate test stand to 0° @ 1000 RPM & 0 In. Hg.

⁽⁶⁾	Vacuum retard 0-3.5° @ 5 In. Hg, 4.5-7° @ 10 In. Hg, 5-7° @ 15 In. Hg.

NOTE: FOR ENGINE RPM & DEGREES, MULTIPLY SPECIFICATIONS BELOW BY 2.

NIPPONDENSO DISTRIBUTOR ADVANCE SPECIFICATIONS

Distributor Part No.

Centrifugal Advance (Dist. Degrees & RPM)

Vacuum Advance (Dist. Degrees & In. of Hg.)

Deg.

RPM

Deg.

RPM

Deg.

RPM

Deg.

RPM

Deg.

In. Hg.

Deg.

In. Hg.

Deg.

In. Hg.

24012

650

2100

.....

4.33

7.87

26030

500

8.5

1000

16.5

2300

.....

3.15

4.06

5.51

26031⁽¹⁾

500

8.5

1000

16.5

2300

.....

3.15

4.06

5.51

26031⁽²⁾

500

1500

16.5

2300

.....

3.15

4.06

5.51

26051

500

1500

16.6

2300

.....

3.15

4.06

5.51

26071⁽¹⁾

500

8.5

1000

16.5

2300

.....

3.15

4.06

5.51

26071⁽²⁾

500

1500

16.5

2700

.....

3.15

4.06

5.51

34053⁽¹⁾

600

5.5

1050

2600

.....

3.15

4.72

5.91

34053⁽²⁾

850

1850

2600

.....

3.15

4.84

5.91

34044

600

5.5

1050

2600

.....

3.15

7.88

11.8

34160

.....

34170

.....

45051

620

900

2000

.....

3.25

5.12

8.27

45060⁽³⁾

500

900

1800

.....

3.54

5.7

6.3

8.5

9.8

60066⁽⁴⁾

490

7.2

920

1800

.....

1.60

2.35

⁽⁶⁾

.....

60080⁽⁵⁾

490

7.2

920

1800

.....

1.60

2.35

⁽⁶⁾

.....

Honda

500

2.5

750

1000

14.5

2000

5.9

7.5

⁽⁷⁾

.....

⁽¹⁾	Manual transmission.

⁽²⁾	Automatic transmission.

⁽³⁾	Vacuum retard, 0° @ 2.36 In. Hg, 2.5° @ 4.72 In. Hg (distributor degrees).

⁽⁴⁾	Without EGR.

⁽⁵⁾

With EGR.

⁽⁶⁾	Vacuum retard, 0° @ 6.3 In. Hg, 3° @ 7.48 In. Hg (distributor degrees).

⁽⁷⁾	Vacuum retard, 0° @ 11.8 In. Hg, 2.5° @ 12.8 In. Hg.