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Engine Codes - 230 I-6
Contributed By: Joe Schaefer
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
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 |
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