Hello kaaren-- True, the VIN on cars built before 1981, like your 1978 Corvette, were only 13 digits. Good luck from Bovan.
Hi Kaaren ... Here's the decoding information on your Vette Vin: 1st digit - Division. (1) Chevrolet. 2nd digit - Car Line. (Z) Corvette. 3rd and 4th digits - Body Style. (37) 2 door coupe, (67) 2 door convertible, (87) 2 door t-top 5th digit - Engine. (H or K) LG4 305 180HP, (J) L48 350 190HP, (L) LT1 V8 (in 72) or L48 350 180HP, (T) L82 350 250HP, (W) 454 V8, (X) L82 350 210HP, (Z) LS4 454 275HP, (4) L82 350 220HP, (6) L82 350 230HP, (8) L48 350 195HP 6th digit - Model Year. (3) 1973, (4) 1974, (5) 1975, (6) 1976, (7) 1977, (8) 1978, (9) 1979, (A) 1980 7th digit - Assembly Plant. (S) St. Louis, MO 8th to 13th digits - Sequential production number
thank you soo much! Now I know. Karen
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