Help. Am trying to indentify the stock tranny in my 1963 Vette.

B/W T10D-1. Aluminum Front Collar ( 3790278 ) and Tailshaft ( 3813490 ). Tailshaft has datecode 9-28-62. Case is cast iron.

Any ideas?

Bob

Welcome to Team Chevelle!

Every '63 Corvette T10 I have seen used an aluminum case with the big raised "bow-tie" emblem on the tail extension housing. It sure sounds like you have a passenger car T10. Posting pictures will get you a lot more replies from fellow members.

What about the aluminum front collar? I will look for a bow-tie on the extension..............

What about the aluminum front collar? I will look for a bow-tie on the extension..............

Smaller 207 front bearing (aluminum) retainer was also used on the cast iron passenger 1963 T10.

My one owner 1963 Corvette is a mid year car that came with a all Aluminum Case Borg-Warner. If you are not the Orginal owner anything is possible. Transmission problem could have been fixed with what they could find. Maybe clean it & paint it with Aluminum Paint (only you will know):D

I have bad news for you, there are no casting numbers or date codes on the tail SHAFT. BUT, there may be some on the tail HOUSING.
This is a tail SHAFT.
http://i65.photobucket.com/albums/h219/DZAUTO/Driveline/100_0214.jpg

This is a tail HOUSING.
http://i65.photobucket.com/albums/h219/DZAUTO/Driveline/100_1769.jpg

Tom, you old stickler you!l:)

This is my rifle, this is my gun................

Help. Am trying to indentify the stock tranny in my 1963 Vette.

B/W T10D-1. Aluminum Front Collar ( 3790278 ) and Tailshaft ( 3813490 ). Tailshaft has datecode 9-28-62. Case is cast iron.

Any ideas?

Bob

That front bearing retainer is a muncie part. check this out.

The 1963 Muncie transmission had a smaller front input shaft bearing and a specific front bearing retainer with a smaller outside diameter than the Muncie transmissions produced in 1964 and later. The original design retainer was manufactured out of aluminum (casting #3790278), but the later replacement retainers (Muncie date codes P0515 (may 15,1963) and later) were made out of cast iron.

The BW fromt bearing retainer is GM 604932, 63 only and 3709331 is 57 to 62 BW.

So it looks to me that you have a 62 BW with a 63 muncie retainer for a early car, just a guess:yes::yes:

It is a puzzle, the front bearing retainer is made for the smaller 207 bearing and specific to a 63 vette or a 409 car. I'm not sure on the big cars if the case was aluminum or cast, the corvette used a aluminum case. I'm wondering how a muncie part fits a BW, knowing how the BW does oil control, just don't made sense.:confused::confused:

Wally has prompted me to check out my early 4 speed stuff.......

The 1963 704 Muncie case with the 207 front bearing originally used the aluminum front bearing retainer casting #3790278. This retainer bolt pattern is the same between the 1963 Muncie and the 1963 T10D-1. I never realized 1963 had the same retainer bolt pattern for both units. All other 307 bearing Muncie cases and 307 bearing T10 cases will not interchange their front bearing retainers.

Every original T10 MDG that uses a snap ring used a retainer with a machined cork screw groove in the bore of the front retainer. As the transmission MDG rotates the grooved retainer promotes positive pressure to keep the fluid form pushing out the front. I cannot tell you how many early T10 leaks we have repaired that had a wrong front bearing retainer.

I would think using the #3790278 retainer on your T10 case would cause a gear lube leak from the lube pushing out of the bore of the retainer unless your MDG from your T10 uses a front nut like a Muncie. Some early T10 MDGs used the muncie nut but, I am not certain what years they were. In your case Bob, I would remove the retainer and see if you have the front nut or snap ring on your MDG. If your MDG has a snap ring, you'll need a different retainer.

Wally has prompted me to check out my early 4 speed stuff.......

The 1963 704 Muncie case with the 207 front bearing originally used the aluminum front bearing retainer casting #3790278. This retainer bolt pattern is the same between the 1963 Muncie and the 1963 T10D-1. I never realized 1963 had the same retainer bolt pattern for both units. All other 307 bearing Muncie cases and 307 bearing T10 cases will not interchange their front bearing retainers.

Every original T10 MDG that uses a snap ring used a retainer with a machined cork screw groove in the bore of the front retainer. As the transmission MDG rotates the grooved retainer promotes positive pressure to keep the fluid form pushing out the front. I cannot tell you how many early T10 leaks we have repaired that had a wrong front bearing retainer.

I would think using the #3790278 retainer on your T10 case would cause a gear lube leak from the lube pushing out of the bore of the retainer unless your MDG from your T10 uses a front nut like a Muncie. Some early T10 MDGs used the muncie nut but, I am not certain what years they were. In your case Bob, I would remove the retainer and see if you have the front nut or snap ring on your MDG. If your MDG has a snap ring, you'll need a different retainer.

Now this is the way to get to the real info, one guy starts and interest is peeked, then the info just starts to roll.:beers::beers: