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how do I tell which engine originally came with my 67 Firebird
the enigne in my car was not the original and I would like to know which size came with the car.
July 23, 2008
The easiest way is to order PHS docs, Then you will know exactly everything that your Pontiac was ordered with, well worth the investment in my opionion. Visit PHS
Also you can try decoding some of it yourself,
VIN Number Decoding Location: Attached to the left-front door pillar
22337 is the model number.
1st digit is the GM division number. 2 = Pontiac
2nd digit is the series number. 2 = Firebird
3rd digit is the model/engine number. 3 = All firebirds manufactured in 1967.
4th and 5th digits are the body type and number:
37 = 2dr coupe
67 = 2dr convertible
6th digit is the last number in the model year i.e. 1967
7th digit is a letter indicating the assembly plant:
U = Lordstown, OH
100001 is the sequential production number. These numbers fell into two ranges to differentiate between V-6s and V-8s as shown below.
Engine Body style Code
I-6 Coupe 223377L600001 and up
I-6 Convertible 223677L600001 and up
V-8 Coupe 223377L100001 to 600000
V-8 Convertible 223677L100001 to 600000
July 23, 2008