1969 Muncie Transmission Stamps

[Rumbleguts396]

Hi Guys, looking for a little information on 1969 Muncie transmission stamps. I’m in the market for an Original 1969 Muncie M22. It’s for a driver quality 1969 Camaro. I’m not concerned about month date codes. I would like at least a real 1969 M22 of quality for my car. So my question is this. Was it typical at times for 1969 Chevrolet Muncie‘s to not have an A,B or C stamp to designate an m20 m21 or m22? I’ve looked at several used ones available for sale. Some have the A B or C stamps, others don’t. The ones I’ve looked into were not over the counter replacements. They all have had Camaro Chevelle etc Vin number stamps and Build date stamps. Just missing the single letter transmission stamp. Any clarification would be helpful. Thanks Rob

[roadster]

A is M20 , B is M21 , C is M22 .

[Rumbleguts396]

Originally Posted by roadster

A is M20 , B is M21 , C is M22 .

I guess I should clarify, is it common for an Original to Not have the A B or C designation ? But just have the Vin number and plant/ build date? Thanks

[ssl78]

Earlier 69 did not have ABC stamps came later in the model year. I think it started sometime around June

[Rumbleguts396]

Originally Posted by ssl78

Earlier 69 did not have ABC stamps came later in the model year. I think it started sometime around June

That is what the seller of an M22 with a 1969 Camaro Vin told me. I wasn’t sure if it was factual or not. Seller claims it’s an original M22 gear set inside. Not having the “C” stamp on the case I wasn’t sure what to believe. Thanks Rob

[ssl78]

I could not find a stamp of my trans but here is the pop and it does not have the C and it is the original M22. The cars is a June built car

[jdv69z]

Will the seller open the side case so you can inspect the gears inside? If you know what to look for (gear tooth angle), you can verify it yourself.

[Rumbleguts396]

Originally Posted by ssl78

I could not find a stamp of my trans but here is the pop and it does not have the C and it is the original M22. The cars is a June built car

Thank You for the extra effort !!!!!

[Rumbleguts396]

Originally Posted by jdv69z

Will the seller open the side case so you can inspect the gears inside? If you know what to look for (gear tooth angle), you can verify it yourself.

good idea. I'm going to ask for some close up shots of the gear set. Thanks, ROB

[Rumbleguts396]

https://www.ebay.com/itm/Rebuilt-Ori...53.m1438.l2649

This is the Muncie I was considering. Thoughts on it anyone?