TRANS AM WORLD





1970 - 1971
2 2 8 8 7 0 N 1 0 0 0 0 1
|-||---| | | | +-------+---> Production Sequence
 |      |     |  |  |-------------> Year/Engine Type
 |      |     |  |                   Chevrolet:
 |      |     |  |                     ???
 |      |     |  |                   Pontiac:
 |      |     |  |                     1 = 8 cylinder, all years
 |      |     |  |                     6 = 6 cylinder, all years
 |      |     |  +---------------> Assembly Plant
 |      |     |                       N = Norwood
 |      |     |                       L = Van Nuys
 |      |     +-----------------> Model Year
 |      |                           0 = 1970
 |      |                           1 = 1971
 |      +---------------------> Model Number
 |                              Chevrolet:
 |                                ???
 |                              Pontiac:
 |                                387 = Firebird
 |                                487 = Esprit
 |                                687 = Formula
 |                                887 = Trans Am
 +-------------------------> Carline Series
                                  12 = Chevrolet Camaro
                                  22 = Pontiac Firebird

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1972 - 1979
2 V 8 7 X 3 N 1 0 0 0 0 1
| | |-| | | |  +---------+---> Production Sequence
|  |    |    |  | +---------------> Assembly Plant
|  |    |    |  |                       N = Norwood
|  |    |    |  |                       L = Van Nuys
|  |    |    |  +-----------------> Model Year
|  |    |    |                         2 = 1972
|  |    |    |                         3 = 1973
|  |    |    |                         4 = 1974
|  |    |    |                         5 = 1975
|  |    |    |                         6 = 1976
|  |    |    |                         7 = 1977
|  |    |    |                         8 = 1978
|  |    |    |                         9 = 1979
|  |    |    +-------------------> Engine Code
|  |    |                          A = 231 c.i.d, 2-bbl V6 (1978 - 80)
|  |    |                          C = 231 c.i.d, 2-bbl V6 (1977)
|  |    |                          D = 250 c.i.d, 1-bbl V6 (1972 - 76)
|  |    |                          E = 350 c.i.d, 4-bbl V8 (1975)
|  |    |                          G = 305 c.i.d, 2-bbl V8 (1979)
|  |    |                          H = 350 c.i.d, 4-bbl V8 (1975)
|  |    |                          H = 350 c.i.d, 2-bbl V8 (1976)
|  |    |                          H = 305 c.i.d, 4-bbl V8 (1979 - 81)
|  |    |                          J = 350 c.i.d, 4-bbl V8 (1976)
|  |    |                          K = 403 c.i.d, 4-bbl V8 (1977 - 79)
|  |    |                          L = 350 c.i.d, 4-bbl V8 (1978)
|  |    |                          M = 350 c.i.d, 2-bbl V8 (single exhaust) (1972 - 76)
|  |    |                          N = 350 c.i.d, 2-bbl V8 (dual exhaust) (1972 - 74)
|  |    |                          P = 400 c.i.d, 2-bbl V8 (dual exhaust) (1973 -74)
|  |    |                          P = 350 c.i.d, 4-bbl V8 (1977)
|  |    |                          R = 400 c.i.d, 2-bbl V8 (single exhaust) (1972 -74)
|  |    |                          R = 350 c.i.d, 4-bbl V8 (1977)
|  |    |                          S = 400 c.i.d, 4-bbl V8 (1975 - 76)
|  |    |                          T = 400 c.i.d, 4-bbl V8 (dual exhaust) (1972 -74)
|  |    |                          U = 305 c.i.d, 2-bbl V8 (1978)
|  |    |                          W = 455 c.i.d, 4-bbl V8 (1975 -76)
|  |    |                          W = 301 c.i.d, 4-bbl V8 (1979 -80)
|  |    |                          X = 455 c.i.d, 4-bbl V8 (H.O.)(1972)
|  |    |                          X = 455 c.i.d, 4-bbl V8 (Super Duty) (1973 -74)
|  |    |                          Y = 455 c.i.d, 4 -bbl V8 (1973 - 74)
|  |    |                          Y = 301 c.i.d, 2 -bbl V8 (1977, 1979 - 81)
|  |    |                          Z = 400 c.i.d, 4-bbl V8 (1976 - 79)
|  |    | 
|  |    +----------------------> Body Type
|  |                               87 = 2 door coupe
|  +-------------------------> Carline Series
|                               Chevrolet:
|                                 ???
|                               Pontiac:
|                                 S = Firebird
|                                 T = Esprit
|                                 U = Formula
|                                 V = Trans Am (1972-1974)
|                                 W = Trans Am (1975-1979)
|                                 X = 10th Anniv Trans Am (1979)
|         
+---------------------------> Make
                                  1 = Chevrolet
                                  2 = Pontiac


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1980
2 W 8 7 T A N 1 0 0 0 0 1
| | |-| | | | +---------+---> Production Sequence
|  |    |   |  |  +---------------> Assembly Plant
|  |    |   |  |                       N = Norwood
|  |    |   |  |                       L = Van Nuys
|  |    |   |  +-----------------> Model Year
|  |    |   |                         A = 1980
|  |    |   +-------------------> Engine Code
|  |    |                          Chevrolet:
|  |    |                            ???
|  |    |                          Pontiac:
|  |    |                            A = 3.8L Buick
|  |    |                            G = 305 c.i.d. 2-bbl V8
|  |    |                            H = 305 c.i.d. 4-bbl V8 
|  |    |                            S = 265 c.i.d. 2-bbl V8 
|  |    |                            T = 4.9L Turbo, 
|  |    |                            W = 301 c.i.d. 4-bbl V8   
|  |    |                            Y = 301 c.i.d. 4-bbl V8 T/A 4.9  
|  |    +----------------------> Body Type
|  |                               87 = 2 door coupe
|  +-------------------------> Carline Series
|                               Chevrolet:
|                                 ???
|                               Pontiac:
|                                 S = Firebird
|                                 T = Esprit
|                                 V = Formula
|                                 W = Trans Am
|                                 X = Trans Am Indy/NASCAR Pace Cars
+---------------------------> Make
                                  1 = Chevrolet
                                  2 = Pontiac


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1981
 1 G 2 A W 8 7  T 4 B N 1 0 0 0 0 1
 | | | | | |-| | | | | +---------+---> Production Sequence
  |   |  |  |    |   |     |  |   | +---------------> Assembly Plant
  |   |  |  |    |   |     |  |   |                       N = Norwood
  |   |  |  |    |   |     |  |   |                       L = Van Nuys
  |   |  |  |    |   |     |  |   +-----------------> Model Year
  |   |  |  |    |   |     |  |                           B = 1981
  |   |  |  |    |   |     |  +-------------------> Check Digit
  |   |  |  |    |   |     +----------------------> Engine Code
  |   |  |  |    |   |                              Chevrolet:
  |   |  |  |    |   |                               ???
  |   |  |  |    |   |                              Pontiac:
  |   |  |  |    |   |                               F/2/5 = 2.5L
  |   |  |  |    |   |                               I/L/2/S/7 = 2.8L, 
  |   |  |  |    |   |                               X/Z/1 = 2.8L
  |   |  |  |    |   |                               W = 4.9L (301 cid)  
  |   |  |  |    |   |                               T = 4.9L Turbo(301 cid) 
  |   |  |  |    |   |                               H/S/G/E/F = 5.0L
  |   |  |  |    |   |                               7/8 = 5.7L
  |   |  |  |    |   +------------------------> Body Type
  |   |  |  |    |                                   87 = 2 door coupe
  |   |  |  |    +---------------------------> Carline Series
  |   |  |  |                                    Chevrolet:
  |   |  |  |                                     ???
  |   |  |  |                                    Pontiac:
  |   |  |  |                                    S = Firebird
  |   |  |  |                                    V = Formula
  |   |  |  |                                    T = Esprit
  |   |  |  |                                    W = Trans Am
  |   |  |  |                                    X = Trans Am Special Edition
  |   |  |  |                                    Y = Trans Am NASCAR Pace Car
  |   |  |  +-----------------------------> Restraint System
  |   |  |                                       A = Manual belts
  |   |  |                                       B = Automatic belts
  |   |  |                                       C = Automatic belts (inflatable restraint)
  |   |  +-------------------------------> Make
  |   |                                         1 = Chevrolet
  |   |                                         2 = Pontiac
  |   +---------------------------------> Manufacturer
  |                                             G = General Motors
  +-------------------------------------> Country
                                                1 = USA
                                                2 = Canada


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