Engine Number - located on the pad at the right front side of the block.
Example: F120EF
| F |
Flint Plant
|
1
|
Month Built (January)
|
20
|
Day Built (20th)
|
EF
|
Engine Type 283cid 220hp
|
TYPE
|
CODE |
283 8-Cyl - 220hp -Comp Ratio 9.5:1 - Carb 4 BC - Manual
|
EF |
283 8-Cyl - 245hp - Comp Ratio 9.5:1 - Carb 2x4 BC - Manual
|
EH |
283 8-Cyl - 270hp - Comp Ratio 9.5:1 - Carb 4 BC - Manual
|
EG
|
283 8-Cyl - 245 hp - Comp Ratio 9:5:1 - Carb 2x4 BC - Auto
|
FG |
283 8-Cyl - 220hp - Comp Ratio 9.5:1 - Carb 4 BC - Auto
|
FH |
| 283 8-Cyl - 250hp - Comp Ratio 9.5:1 - Carb FI - Manual |
EM |
| 283 8-Cyl - 283hp - Comp Ratio 10.5:1 - Carb FI - Manual |
EL |
| 283 8-Cyl - 250hp - Comp Ratio 9.5:1 - Carb FI - Auto |
FK |
Engine Casting number was 3731548
Transmission Number on manual and Powerglide transmissions indicates the type, month and day produced and the shift it was assembled. Code for Powerglide located on the rear face of the case on the lower right corner. Code for 3 spd. located on the rear face of the case on the upper right corner. Code for 4 spd located on the left side of the case at the rear of the cover.
Example: C1120N (all types except Warner Gear)
C
|
C = Cleveland Plant Powerglide
|
11
|
Month Built (November) |
20
|
Day Built (20th)
|
D or N
|
Shift Built (Day or Night) - transmissions built on day shift may not have a shift code
|
Example: WF1757-2 (Warner Gear)
W
|
W = Warner Gear
|
F
|
Month built (June) - A through L used for the months
|
17
|
Day Built (17th)
|
| 57 |
Year Built (1957) |
1 or 2
|
Shift bulit (1 = Day or 2 = Night) - transmissions built on day shift may not have a shift code
|
Transmission Codes
Type
|
Plant
|
Code |
Powerglide
|
Cleveland |
C |
3-Speed
|
Saginaw
|
S |
4-Speed
|
Muncie
|
P |
| 4-Speed |
Warner Gear |
W |
Rear Axle Number identifies the gear ratio, the build month and day. Code located on the front right side of the differential carrier.
Example: AD0629
AD
|
AD = 3spd 3.27 ratio
|
06
|
June |
29
|
29th day of month
|
| Description |
Code
|
3-Speed
|
AH |
Powerglide
|
AE
|
| 3-Speed 3.27 Ratio |
AD |
| 3-Speed 4.11 Ratio |
AJ |
| 3-Speed Positraction 3.70 Ratio |
AN |
| 3-Speed Positraction 4.11 Ratio |
AP |
| 3-Speed Positraction 4.56 Ratio |
AQ |
| Heavy Duty Brake & Suspension Positraction 3.70 Ratio |
AS |
| Heavy Duty Brake & Suspension Positraction 4.11 Ratio |
AT |
| Heavy Duty Brake & Suspension Positraction 4.56 ratio |
AU |
