CORVETTE ENGINE SERIES NUMBER AND SUFFIX CHART 1985 5 7L L98 ZDF ZJB ZJC ZJJ ZJK 1985 TRANSMISSION IDENTIFICATION CODE MD8 v 4 SPD A T MK2 4 SPD M T THM 700 W IREHOUSING AND DISTRIBUTION DIVISION OF GENERAL MOTORS CORPORATION CHE ROLET 14Y REV I 85 1 1