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Engine Codes for
Full Size Jeeps
This set of Engine Code pages was compiled by Joe Schaefer.
230 OHC I-6:
The Engine Code is found on the boss near the right front corner of
the block.
The code consists of 5 groups of digits with either alphabetical or numerical
characteristics as follows:
1st & 2nd Digit/Type
AD- Station wagon-Panel Delivery-Gladiator: w/Dual Carb,-2WD or 4WD
- Automatic Transmission.
AS- Station Wagon-Panel Delivery-Gladiator: w/Single Carb - Automatic Transmission
ND- Station Wagon-Panel Delivery: w/Dual Carb-2WD
NS- Station Wagon-Panel Delivery: w/Single Carb-7.5:1 Compression Ratio
TD- Station wagon-Panel delivery-Gladiator: w/Dual Carb-2WD or 4WD - Standard Transmission
TS- Station Wagon-Panel Delivery-Gladiator: w/Single Carb - Standard Transmission
Note: 1st and 2nd digits not shown on short block.
3rd thru 5th and/or 6th Digit/Model
60C- 6-230 OHC Engine
60CR- 6-230 OHC Short Block
Note: 6th digit shown only on short block.
6th and/or 7th thru 10th Digit/Engine Number
Note: Beginning with the sixth digit (except short block).
11th thru 13th Digit
A- 0.010" undersize Crankshaft Main and Connecting Rod Bearings
AB- 0.010" undersize Crankshaft Main and Connecting Rod Bearings with 0.010"
oversize bores in Cylinder Block
B- 0.010 oversize bores in Cylinder Block
S- Engine built for service
Note: Above only if applicable.
14th & 15th Digit/Compression Ratio
7.5:1
8.5:1
9.5:1
References:
Parts Manual: W-1170-R2, Kaiser Jeep Corporation, 1967
Parts Manual: F-76072, AMC, Feb 1972
Parts Manual: F-75080, AMC, May 1980
Parts Manual: 89-81-374-084, AMC, May 1987
