Early Muncie Codes
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Melting Slicks
Joined: Nov 2002
Posts: 2,460
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From: Wheaton IL
Early Muncie Codes
This is a 7/8" 3851325 case which means 1964-1965
Date on Side = P0516 = May 16th (ealy muncie date codes did not have the year)
Anyone know what this means?
Top of case near passenger side ear: 824P 233540
This transmission is not original to the car.
Brian
Date on Side = P0516 = May 16th (ealy muncie date codes did not have the year)
Anyone know what this means?
Top of case near passenger side ear: 824P 233540
This transmission is not original to the car.
Brian
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Brian,
You have most of it already figured out.
Up until about 67, Muncies got a date code similar to what is on your tranny. That is, month-day. Then, the date coding changed to a number for the year, a letter for month and numbers for the day of month. About Oct 68 (for 69 model cars) an A, B or C was added at the end of the date code to indicate M-20, M-21, M-22. Hopefully (and yours does) a tranny will also have the VIN stamped on it, which will provide the year, and yours does. That 4 before the P is the year (1964). Now, if this Muncie has its ORIGINAL input shaft, it has either one or no grooves on the input. One groove=close ratio (2.20 1st). No grooves=wide ratio (2.56 1st).
Hope this helps.
You have most of it already figured out.
Up until about 67, Muncies got a date code similar to what is on your tranny. That is, month-day. Then, the date coding changed to a number for the year, a letter for month and numbers for the day of month. About Oct 68 (for 69 model cars) an A, B or C was added at the end of the date code to indicate M-20, M-21, M-22. Hopefully (and yours does) a tranny will also have the VIN stamped on it, which will provide the year, and yours does. That 4 before the P is the year (1964). Now, if this Muncie has its ORIGINAL input shaft, it has either one or no grooves on the input. One groove=close ratio (2.20 1st). No grooves=wide ratio (2.56 1st).
Hope this helps.
Team Owner
Joined: Oct 2000
Posts: 38,897
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From: Washington Michigan
The VIN derivative says it came out of a car built at the Pontiac plant in Pontiac, Michigan during the 1964 model year; could have been a "A"-body GTO or a "B" body (Catalina, etc.). 
