Corvette History


Select a year and a model to view the vast history of Corvettes.

Engine Number - Transmission Number - Rear Axle Numb 1963

Engine Number - located on the raised pad - an extension of the head mounting surface - at the right front side of the block.
Example:  F0118RC


F Flint Plant
1
Month Built (January)
18
Day Built (18th)
RC
Engine Type 327cid 250hp
TYPE
 CODE
327 8-Cyl - 250hp -Comp Ratio 10.5:1 - Carb 4 BC - Manual
RC
327 8-Cyl - 300hp - Comp Ratio 10.5:1 - Carb 4 BC - Manual
RD
327 8-Cyl - 340hp - Comp Ratio 11.25:1 - Carb 4 BC - Manual*
RE
327 8-Cyl - 360 hp - Comp Ratio 11:25:1 - Carb FI - Manual
RF
327 8-Cyl - 250hp - Comp Ratio 10.5:1 - Carb 4 BC - Auto
SC
327 8-Cyl - 300hp - Comp Ratio 10.5:1 - Carb 4BC - Auto
SD

*Special High Performance

All engines also have the model year and production sequence number (last 6 digits) of the Vehicle Identification Number stamped on the engine.

Engine Casting number was 3782870 - located under the master brake cylinder.

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 bottom center of the transmission oil pan.  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:  WF1763-2  (Warner Gear)

W
 W = Warner Gear    
F
Month built (June) - A through L used for the months
17
Day Built (17th)
63
Year Built (1963)
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
Powerglide
Toledo
T
3-Speed
Saginaw
S
4-Speed Warner Gear W
4-Speend Muncie P

Rear Axle Number identifies the gear ratio, the build month and day.  Code located on the bottom of the differential carrier housing by the cover.

Example: CD0629

CD
CD = 3..70 ratio w/Posi-traction
06
June
29
29th day of month

Description Code   
3-speed 3.36 ratio
CA
Posi-traction 3.36 ratio
CB
Posi-traction 3.55 ratio CC
Posi-traction 3.70 ratio CD
Posi-traction 4.11 ratio CE
Posi-traction 4.56 ratio CF
Posi-traction 3.08 ratio
CJ
4-speed 3.08 ratio
CZ
4-Speed 3.70 ratio
CX