21.513 Corvettes were built in 1963. 10.594 Coupe and 10.919 Convertibles.
The Vehicle Identification Numbers, VIN were 40837S100001 through 40837S122229
For convertibles, fourth digit is a 6

Type Basic L75 L76 L84
Cubic Inch 327 327 327 327
HP @ RPM 250 @ 4400 300 @ 5000 340 @ 6000 360 @ 6000
Torque  RPM 350 @ 2800 360 @ 2800 344 @ 4000 352 @ 5000
Comp. Ratio 10.5:1 10.5:1 11.25:1 11.0:1
Bore / Stroke 4.00 x 3.25 4.00 x 3.25 4.00 x 3.25 4.00 x 3.25
Carburator 4bbl 4bbl 4bbl Fuel injection
In Manifold N/A N/A N/A N/A
Valve Lifters N/A N/A N/A N/A
Exhaust N/A N/A N/A N/A
Oil Capacity2 4 Qt 4 Qt 4 Qt 4 Qt
Spark Plugs Type 44 Type 44 Type 44 Type 44
2. Add 1 Qt if you put a new oil filter.

3782870 All

3795896 327 CID - 250 HP
3782461 327 CID - 300 HP / 340 HP / 360 HP

327 Cubic Inch Engine CODE
250 HP - Manual transmission RC
300 HP - Manual transmission RD
340 HP - Manual transmission RE
360 HP - Manual transmission RF
250 HP - Automatic transmission SC
300 HP - Automatic transmission SD

Ratio and Type CODE
3.36 with 3-speed CA
3.08 Positraction CJ
3.36 Positraction CB
3.55 Positraction CC
3.70 Positraction CD
4.11 Positraction CE
4.56 Positraction CF
3.08 with 4-speed CZ
3.70 with 4-speed CX

Color CODE
Tuxedo Black 900
Silver Blue 912
Daytone Blue 916
Riverside Red 923
Ermine White 936
Sebring Silver 940

Tommy Ledberg