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Buick Gran Sport
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Facts & Figures

V.I.N. Plate Information

1966 - 1971 Models regarding GS's

1st Digit - 4 = Buick Motor Division

2nd  and 3rd Digits -   34 = 67 GS340, 68-70 GS350, 71 GS

                                   46 = 66 GS, 67-69 GS400, 70 GS455

4th and 5th Digits -    07 = 2-door sedan

                                   17 = 2 door coupe

                                   27 = 2 door sedan

                                   37 = 2 door coupe

                                   67 = 2 door convertible

6th Digit - Corresponds with model year (ex. 5=1965, 7=1967)

7th Digit -   B = Baltimore, MD

                    C = South Gate, MI

                D = Atlanta, GA

                    G = Framingham, MA

                    H = Flint, MI

                    I = Oshawa, Ontario

                    K = Kansas City, MO

                    V = Bloomfield, IL

                    Y = Wilmington, DE

                    Z = Fremont CA

Last 6 Digits - Production number sequence

 

ENGINE CODES - Found on the passenger side of the lifter valley support rail

63   - JT = 401 ci, 4 bbl, 325 horse

         JW = 425 ci, 4 bbl, 340 horse

         JX = 425 ci, 2x4 bbl, 360 horse

64   - KT = 401 ci, 4 bbl, 325 horse

         KW = 425 ci, 4 bbl, 340 horse

         KX = 425 ci, 2x4 bbl, 360 horse

65' - LT = 401 ci, 4 bbl, 325 horse

LR = 401 ci, 4 bbl, 325 horse 4400 Series

        LW = 425 ci, 4 bbl, 340 horse

        LX = 425 ci, 2x4 bbl, 360 horse

66' - 4400, MR,MS,MU = 401 ci, 4 bbl ,

      - MR 325 HP 10:25 to 1, MS 332 HP 11:1 , MU 356 HP? 10:25to 1 = 401 ci, 4 bbl -