Question on 1969 Muncie Date Codes

[Patrick B.]

I assume the answer is probably in the 1969 judging manual, but I do not have one. Did all 69 Muncie transmissions use the A, B, C codes for M-20, 21, 22 or did this symbol start after October 1968.

[James G.]

Re: Question on 1969 Muncie Date Codes

They began IIRC October 21st 1968 - my last 69 Z built the last week of Oct 68 had a Oct 19th trans which was not suffix coded.
69_LB_Z_10D_M20_VIN_19N531196.jpg

[Patrick B.]

Re: Question on 1969 Muncie Date Codes

Thanks for the good information James.

[Dave B.]

Re: Question on 1969 Muncie Date Codes

Yes James is correct. I just recently researched this subject extensively and yes the A B and C codes where absent on early 69 cars until Oct 21st. My car was built on Sept 13th and does not have the B code for close ratio tranny.

[Michael H.]

Re: Question on 1969 Muncie Date Codes

For your reading pleasure.

https://www.motortrend.com/how-to/1808-guide-to-muncie-m20-m21-and-m22-four-speed-transmissions/

Mike