The Supercar Registry

The Supercar Registry (https://www.yenko.net/forum/index.php)
-   Parts/Memorabilia - Wanted (https://www.yenko.net/forum/forumdisplay.php?f=84)
-   -   Muncie M21 dated P9B17 (https://www.yenko.net/forum/showthread.php?t=146599)

rlw68 01-12-2018 05:09 PM

Muncie M21 dated P9B17
 
Looking for original M21 for my 69 Z/28. The protecto plate has trans assembly code P9B17.

Yea I know this is a long shot...

enio45 01-13-2018 01:28 PM

is that , i assume a late car? Would it have an A, B or C after it, if it was late production?

rlw68 01-13-2018 02:21 PM

Quote:

Originally Posted by enio45 (Post 1383896)
is that , i assume a late car? Would it have an A, B or C after it, if it was late production?

The car was built in February. Should the stamp on the trans include the B code for M21? It has the original engine and rear axle (4.10!)

thanks,
Rob

Steve Shauger 01-13-2018 03:00 PM

Rob, the letter suffix stamped after the assembly date on transmission denoting A=M20 ,B=M21,C=M22 is not designated on Protecto plates. Your Z28 could have come with any version trans, but the most probable is M21, so percentage wise Bor M21. I've owned/own Z's with all three configurations. Early 69 built cars with muncie trans didn't have the suffix stamped but based on your build date it would have.

Steve Shauger 01-13-2018 03:21 PM

Just to clarify, Muncie transmissions built after approximately Oct 20th of 68 were stamped with the suffix trans designation A, B & C

big gear head 01-13-2018 09:28 PM

1 Attachment(s)
Mine missed it by 3 days, right?

Mr70 01-13-2018 09:44 PM

Yes

rlw68 01-14-2018 12:58 PM

Quote:

Originally Posted by big gear head (Post 1383961)
Mine missed it by 3 days, right?

Thanks for the pic! Where is the partial VIN stamped, assuming this is in a Norwood car?

rlw68 01-14-2018 01:16 PM

Quote:

Originally Posted by Steve Shauger (Post 1383906)
Rob, the letter suffix stamped after the assembly date on transmission denoting A=M20 ,B=M21,C=M22 is not designated on Protecto plates. Your Z28 could have come with any version trans, but the most probable is M21, so percentage wise Bor M21. I've owned/own Z's with all three configurations. Early 69 built cars with muncie trans didn't have the suffix stamped but based on your build date it would have.

The options on the sales doc has '4-speed trans' separate from 'Z28 Equipment'. Thats interesting since the 'rear axle ratio' listed by itself is for the 4.10 gear. Would it be common to use the M20 or M22 with this setup?

big gear head 01-14-2018 02:28 PM

Quote:

Originally Posted by rlw68 (Post 1384056)
Thanks for the pic! Where is the partial VIN stamped, assuming this is in a Norwood car?

When I had this transmission out I didn't look for the VIN. It's been buried in a cabinet for a few years and I would have to dig it out to check. I took it out of a '67 Chevelle that I bought years ago.


All times are GMT. The time now is 04:07 PM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.


O Garage vBulletin Plugins by Drive Thru Online, Inc.