Home
Decode
Tech
Tools
My Books
Contact
Chevelle
of the Month
Things
For SalePowerglide
Typical Powerglide oil pan
| A - January | B - February | C - March | D - April |
| E - May | H - June | K - July | M - August |
| P - September | R - October | S - November | T - December |
Month dating by letter was done after the 1967 model year.
Although the Powerglide 2-speed automatic transmission was ordered and reported under RPO M35 for all years it was available, there were many variations of the transmission depending on which engine it was being installed behind. For example, in 1966 and 1967 there were no fewer than 7 versions for each year.
Powerglide assembly plants include Cleveland, OH. (C), Toledo, OH. (T), and McKinnon Industries, St. Catharines, ON. (E) and they varied model years. See the matrix below.
| 1964 Cleveland, OH (C) Toledo, OH (T) |
1965 Cleveland, OH (C) Toledo, OH (T) |
1966 Cleveland, OH (C) Toledo, OH (T) McKinnon Industries (E) |
1967 Cleveland, OH (C) Toledo, OH (T) McKinnon Industries (E) |
| 1968 Cleveland, OH (C) Toledo, OH (T) McKinnon Industries (E) |
1969 Cleveland, OH (C) Toledo, OH (T) McKinnon Industries (E) |
1970 Cleveland, OH (C) McKinnon Industries (E) |
1971 Cleveland, OH (C) McKinnon Industries (E) |
| 1972 Cleveland, OH (C) McKinnon Industries (E) |
The transmission date was stamped into the oil pan itself on the passenger side.
C - Cleveland
0820 ~ August 20 (1964)
N - Night shift
T - Toledo
1129 - November 29 (1965)
N - Night shift
T - Toledo
0214 - February 14 (1966)
D - Day shift
C - Cleveland
8 - 1968
E23 - May 23
N - Night shift
Partial VIN stamping on a 1968 Baltimore Powerglide.
Partial VIN stamping on a 1972 05D Kansas City Powerglide.
