midvette6067

WTB photos of any original M22 that was installed new in a 1965 Corvette. If you don't want to show your VIN, simply hide the last digit or two. I am looking for a particular one, which may still be in PA. It was probably sold in Carlisle in the 80's. Thanks, but I don't need the pictures from Alan Colvin's articles.

Also, If you have an unrestored no radio L78 '65, I'd be very interested in photos of your #3 frame cross member. (#3 is right in front of the rear differential holder, which also looks like a cross member, but it attached to the frame with rubber cushions.) Trying to document something that might still be on your '65 Corvette frame in that area. Thanks again.

vettebuyer6369

Moving from Parts For Sale classifieds to General.

DansYellow66

Maybe my morning coffee just hasn't worked it's way in yet but I don't recall any 1965 M22s. I thought they allegedly first showed up in a couple (very few) special order early development L88s intended for non-factory sponsored racers in 1966.

midvette6067

The thirty (yes, more than in 1966) '65 M22s are known to the Corvette gurus, including one who worked in Tonawanda. He is now writing a BBC development book.

Another source says most 1965 M22s were behind 425 HP big blocks in 1965 Corvette racers. A few additional went into pass. cars. Google "Colvin M22". Or read his appendix in "Chevrolet By The Numbers 1965-1969" book.

Please try the vote thing. I have not used that before.

THANKS!

DansYellow66

Well - maybe more coffee would have helped because there has been some discussion over the years about this. One example:

https://www.corvetteforum.com/forums...knowledge.html

Sounds like one would be hard to verify since all the case and tailhousing numbers are the same as an M20/21. Only differences are the gear set (can be changed out) and the drain plug (often added over the years). Good luck with the search.

DansYellow66

Well there is also the 7/8 inch versus 1 inch countershaft difference but at least one poster on that thread I linked swears to seeing a 7/8 inch M-22 gear set so who knows.

midstyle

Can you be a little more specific ? Are we looking for a hole ?, a bracket ?, located on the centerline ?

midvette6067

Two areas of wide tape, all the way around the cross member multiple times, in two places. Goes over the brake lines; Could not have been applied with the body on the frame. At least not the way I found it. Two other no radio 425 HP L78 car owners have reported this, but one of the two has no photos.

cardo0

Yea i got a Muncie M2X something with a '65 case but bastard tail and side cover casting numbers. Has a brass plug for a drain in the correct place. Had some welding done on case also. Opened the side cover and looks like wide angle gear set to me. Couldnt find any different cast numbers for the '65 Muncie M20, M21, M22.

FYI bought it in Orange county CA. I need to take pix if u r interested.

BTW are u an NCRS member???

midvette6067

Yes on the NCRS query. Three diff. chapters, including MICH.

If no cast number at all, I would like to see photos of the main case.
midvette@mac.com
Tom Dingman (NCRS 4889)

midvette6067

Main case number is not the same as anything I know of...

THANKS for your replies.
Tom D.

cardo0

Sorry i wont have anything to do with that racket. They rubbed me the wrong way too much on this forum.

Not to say your fault but those that stalk here earned my opinion.

Sorry Tom and good luck.

TCracingCA

The 1965 units never got into cars meant for sale to the public, but went into HD cars for durability testing, special HD 427 builds for some racers and not all of that batch were used. Many of that 30 went into a room and continued to be filtered out into the 1966 year in the same manner. There is no way 30 M22 1965 cars are out there running around!!!!!!!!!

4 Speed Dave

Here:

https://www.corvetteforum.com/forums...22-muncie.html

JodysTransmissions

1965 M22 eye candy

TCracingCA

You will affect the poll results! You have to go hide that thing till the OP is done here with his poll!

DZAUTO

Over many years, this (above picture) has been my understanding as to what was done to a 325 case as well as boring the counter shaft holes to 1in for the M22 counter gear. As far as I know, there were NEVER any 7/8in M22 counter gears made by GM, they were ALL 1in.
The only other thing I've never been able to get credible information about is whether or not the M22 1st gear had roller bearings.
Jody,
Do you know?

JodysTransmissions

Tom,

Good to see you here.......

I have only known the early 1965 M22 to have a 1" countershaft as well.

The only rollerized 1st gear M22 that I knew was an over the counter item listed in the Chevrolet High Performance Parts book from the 1970 catalog. I cannot confirm if any '65 M22s had a roller 1st gear.

midvette6067

I think the poll will still be correct, if the voters understand that I meant "a real main case, with your own eyes" and not just a photo. Thanks for all who have commented.

DZAUTO

I probably should not say this here, but it would be super easy to counterfeit a 65 M22 case. Simply place an appropriate 3851325 main case in a milling machine, set the cutter to remove the 325 casting number and then increase the 7/8in bore for the counter shaft to 1in.
I have never attempted nor intended to counterfeit a Muncie in such a manner, BUT, I have bored a 7/8 case to 1in so that the 66-later counter gear and 26spline input could be installed. TOOOOOOOOOOOOOOO EASY!