1969 Chevy II
| Code | Displ. & Carb. | Comp. Ratio |
|---|---|---|
| AA, AB | 153" 4 1 Bbl. | 8.5:1 |
| AM, AN, AO, AP, HQ, AR | 230" 6 1 Bbl. | 8.5:1 |
| BB, BC, BD, BE, BF, BH | 250" 6 1 Bbl. | 8.5:1 |
| DA, DC, DD, DE | 307" V8 2 Bbl. | 9.0:1 |
| HC, HD, HF | 350" V8 2 Bbl. | 9.0:1 |
| HA, HB, HE | 350" V8 4 Bbl. | 10.25:1 |
| JF, JI | 396" V8 4 Bbl. | 10.25:1 |
| JH, JL | 396" V8 4 Bbl. | 11.0:1 |