|
Revised 05/13/20
Summary of
Letter
Car Distributors
Identification
|
|
Distributor
Number
|
|
1955
C300
|
1AZ4001G, 1658989
|
|
300B
|
1704309,
IBK-4301C
|
|
300C
|
1689325,
IBK-4304
|
|
300D
|
IBS
4007A; 1841515
|
|
300D
Fuel Injection
|
IBS
4008
|
|
300E
|
IBS-4010,
1842805
|
|
300F
|
Autolite
IBS-4011; Chrysler number 1889568
|
|
300G
|
Autolite
IBS-4011; Chrysler number 1889568
|
|
300H
|
2098313,
IBS-4011AS
|
|
300J
|
2098620
(Auto-lite)
|
|
300K
|
2444361,
IBS-4011C
|
|
300K
ram
|
2444364,
IBS-4011D
|
|
300L
|
2444683
(Chrysler), IBS-4006K (Prestolite)
|
Specifications
Note: Degrees here are expressed in distributor degrees which
is 1/2 crankshaft degrees
|
1955
C-300
Engine Idle Setting: 600 RPM, Ignition Timing: 100
B.T.D.C.
Note: Reduce engine idle to 500 RPM, set ignition at 100
B.T.D.C.
and reset engine idle back to 600 RPM. Ref: 1955 Chrysler
Service Manual Page 285. Additional note: Distributor components
are identical to those found on many other 1955 Chrysler product
V-8 engines EXCEPT for the governor weight spring set, cam and
stop plate and vacuum chamber. Ref 1955-58 Chrysler Passenger Car
Parts List.
|
|
Automatic
Advance Curve
(distributor degrees and distributor RPM)
|
00
at 300 to 400 RPM
|
|
|
00
to 3.50
at 400 RPM
|
|
|
30
to 50
at 500 RPM
|
|
|
70
to 90
at 800 RPM
|
|
|
|
Vacuum
Advance Curve
(distributor degrees at inches of mercury)
|
10
at 5.5” to 6.5”
|
|
|
50
to 6.50
at 10”
|
|
|
60
to 80
at 11”
|
|
300B
|
|
Automatic Advance Curve
(distributor degrees and RPM)
|
00
at 350 to 450
|
|
|
00
to 4.250
at 450
|
|
|
2.80
to 4.80
at 500
|
|
|
70
to 90
at 1200
|
|
|
|
Vacuum
Advance Curve
(distributor degrees at Inches of Mercury)
|
Start
at 7” to 8”
|
|
|
20
at 8.5” to 9.5”
|
|
|
60
at
11.25” to 12.75”
|
|
|
70
to 90
at 13.5”
|
|
300C
|
|
Advance
Curves
|
IBK
4304; 1689325
|
|
Automatic Advance Curve
(distributor degrees and RPM)
|
00
at 250 to 450
|
|
|
00
to 20
at 450
|
|
|
40
to 60
at 875
|
|
|
90
to 110
at 2250
|
|
|
|
Vacuum Advance Curve
(distributor degrees at Inches of Mercury)
|
Start
at 7.5” to 8.75”
|
|
|
20
at 8.75” to 10.2”
|
|
|
60
at
11.75” to 13.4”
|
|
|
100
to 120
at 18”
|
|
300D
|
|
Advance
Curves
|
IBK
4304; 1689325
|
|
Automatic Advance Curve
(distributor degrees and RPM)
|
00
at 220 to 490
|
|
|
00
to 20
at 490
|
|
|
20
to 40
at 750
|
|
|
3.50
to 4.50
at 850
|
|
|
80
to 110
at 2400
|
|
|
|
Vacuum Advance Curve
(distributor degrees at Inches of Mercury)
|
00
at 7.5” to 8.5”
|
|
|
4.50
to 6.50
at 11”
|
|
|
100
to 120
at
16”
|
|
300E
|
|
Automatic Advance Curve
(distributor degrees and RPM)
|
00
at 310 to 490
|
|
|
00
to 20
at 490
|
|
|
3.50
to 5.50
at 800
|
|
|
60
to 80
at 1500
|
|
|
8.50
to 10.50
at 2300
|
|
|
|
Vacuum Advance Curve
(distributor degrees at Inches of Mercury)
|
00
at 7.5” to 9.1”
|
|
|
60
to 90
at 13”
|
|
|
11.50
to 14.50
at
18.2”
|
|
300F, 300G
|
|
Automatic Advance Curve
(distributor degrees at distributor RPM)
|
00
at 325 to 475
|
|
|
00
to 4.30
at 475
|
|
|
4.50
to 6.50
at 640
|
|
|
90
to 110
at 2400
|
|
|
|
Vacuum Advance Curve
(distributor degrees at Inches of Mercury)
|
00
at 7.2” to 8.9”
|
|
|
4.50
to 7.50
at 12”
|
|
|
7.50
to 10.50
at
14.5”
|
|
300H
|
|
Automatic Advance Curve
(distributor degrees at distributor RPM)
|
00
at 325 to 475
|
|
|
00
to 30
at 475
|
|
|
4.50
to 6.50
at 640
|
|
|
90
to 110
at 2400
|
|
|
|
Vacuum Advance Curve
(distributor degrees at Inches of Mercury)
|
00
at 7.2” to 8.9”
|
|
|
4.50
to 7.50
at 12”
|
|
|
7.50
to 10.50
at
14.5”
|
|
300J
|
|
Automatic Advance Curve
(distributor degrees at distributor RPM)
|
00
at 525 to 675
|
|
|
00
to 30
at 675
|
|
|
4.50
to 6.50
at 910
|
|
|
|
Vacuum Advance Curve
(distributor degrees at Inches of Mercury)
|
00
at 6” to 9”
|
|
|
4.50
to 7.50
at 12”
|
|
|
7.50
to 10.50
at
14.3”
|
|
300K
|
|
Automatic Advance Curve
(distributor degrees at distributor RPM)
|
00
at 325 to 475
|
|
|
00
to 40
at 475
|
|
|
4.50
to 6.50
at 640
|
|
|
90
to 110
at 2400
|
|
Vacuum Advance Curve
(distributor degrees at Inches of Mercury)
|
00
at 7.2” to 8.9”
|
|
|
4.50
to 7.50
at 12”
|
|
|
7.50
to 10.50
at
14.5”
|
|
|
|
|
300K Ram
|
|
Automatic Advance Curve
(distributor degrees at distributor RPM)
|
00
at 525 to 675
|
|
|
00
to 30
at 675
|
|
|
4.50
to 6.50
at 910
|
|
|
|
Vacuum Advance Curve
(distributor degrees at Inches of Mercury)
|
00
at 6” to 9”
|
|
|
4.50
to 7.50
at 12”
|
|
|
7.50
to 10.50
at
14.3”
|
|
300L
|
|
Automatic Advance Curve
(distributor degrees at distributor RPM)
|
00
at 325 to 475
|
|
|
00
to 40
at 475
|
|
|
4.50
to 6.50
at 640
|
|
|
90
to 110
at 2400
|
|
|
|
Vacuum Advance Curve
(distributor degrees at Inches of Mercury)
|
00
at 7.2” to 8.9”
|
|
|
4.50
to 7.50
at 12”
|
|
|
7.50
to 10.50
at
14.5”
|
Thanks to Rich Barber for some of the data.
Photos of a K distributor
A beat up tag, but still legible.
The tach drive mechanism is contained in the casting below the tag, with a metal cap screwed on.
Manual transmission Ks used the drive.
Automatic transmission Ks didn't use the drive and had a cap for dirt prevention.
The brass cap is the grease cup for the distributor shaft bearing.
Sharp eyes might notice the L distributor curve matches the F.
Perhaps this is not surprising since both use the same cam shaft.
Back to Tech List
|