T-10 ID

[Bill B.]

Need some help on T-10 identification. Steel case and aluminum tail. Main case stamped T-10 1B, WG-1, and WL2252 (best guess on this part). Tail t-10 7 and believe 1-1-1-68. Output 10 spline and speedo gear left side. Any of this make enough sense to kinda ID it? Or is there anything else which would help ID application and/or year?

[Joseph T.]

Re: T-10 ID

Looks like Dec 22nd 1965 Warner gear 2nd shift

[Joe L.]

Re: T-10 ID

Bill----

A T-10 1B main case was used from mid 1959 to until late 1960 for T-10's. A T-10 7 (with no suffix) extension housing was used for 1957 only.

[Gary C.]

Re: T-10 ID

'57 tail shaft would be a T-107 as Joe points out but would have raised castings for a contigious cast date and SPAC on it. Gary....

[Bill B.]

Re: T-10 ID

The real issue for me here is that a t10 of some early correctness (to someone?) might give some future "swapability" versus the 65 M20 that I currently have. I just didn't know how late in the cycle t10's were used in the passenger series to include AMC and so on. This transmission was in a 306 chevelle but I don't think original. I have this 58 which I would like to be somewhat era correct without spending $4000 on a transmission. Bottomline is that I think a $400 investment would be a simple solution. Bill

[Gary C.]

Re: T-10 ID Date Codes

Bill, there ought to be some dates on it somewhere other than the stamped assembly date on the rear of the main case. Does the tailshaft have a Chevy Bowtie or any other markings on it? How about the main case? What does the side cover look like. There should be a side cover number on the inside. Gary....

[Bill B.]

Re: T-10 ID Date Codes

Gary, I don't think Bowtie anywhere on it. I am trying to get better id on markings but it is great distance from me. I think I am going to go ahead and pick it up since it is only $400 with clutch, flywheel, bellhousing, throwout and recently daily used driver transmission out of 396 stored vehicle. I will get back to you if you can continue to help me later too. At this point I just view it as a cheap pickup and I can put my muncie in my Son's 72 convertible which is currently an automatic. I can use the clutch and new style aluminum bellhousing on his. I would at least have a transmission for the old 58 in my "maybe" quest for something correct. I just hate to spend $3500 plus for the 58 real deals! Bill

[Joseph T.]

Re: T-10 ID

Gary

I noticed on Ebay..that Tim Partridge was selling what was described as a prototype T-10 made with a T89 main case and T7 tail shaft. ( no spac or date that I could see on the tail shaft ).

If I can find the picture I will post it.

Maybe the transmission this member is looking at has a rare T7 tail..or it is a passenger car T7?

Interesting.

Joe

[Bill B.]

Re: T-10 IB

Joe, different transmissions and I really hope this one's tail is "7"! What has me perplexed here is the WL1152. To me, if this stamp is correctly given to me, this would be a November 11, 1965. I thought the 1B's went from around June 59 to Jan 61? Guess I am hoping that it really reads "WL1182 or WL1192". I will physcially have my hands on it in a couple of weeks and then my saga will over. Oh well, whatever it really is it was a cheap deal to me. Might be some good swap bait if it works out as I try to get nearer to my Jun 28, 1958 build date. Isn't growing older life fun?

[Loren L.]

Re: T-10 IB

You're probably looking at a unit that was built for use as a SERVICE REPLACEMENT in the mid-60's - parts to assemble these units would be gathered from whereever they could be found.

[William C.]

Re: T-10 IB

Or a Pontiac-olds-Buick application.

[Bill B.]

Re: T-10 IB

Bill, not trying to drag this on forever but trying to better understand the T-10 arena a little better. I have gone to a multitude of sites to read up on the T-10. Each adds a little info but doesn't really give a comprehensive overview. Guess I just don't know what the "real" source document is. I can kinda see the service replacement aspect if you were in the mid to late 60's and you went to Chevrolet to repair your early solid axle-like an over-the-counter deal. But, would they have stamped a date on them?

Regarding other GM applications, were the same casting numerics used on an olds (ie T10-1B or T10-1C)? If they were, were they used for a service life longer than those specically designated for the early Vettes. I can remember my high school 59 Impala with tri-power 348 and factory 4-speed. And, a bunch of the early to mid 60's passenger cars were using the muncie by then. I don't think my two buddies with a newer GTO and 442 had transmissions marked exactly like mine either? But, maybe they were?

Any small ounce of knowledge is worth a ton of appreciation!

[William C.]

Re: T-10 IB

Within GM, the main cases were the same for a set of years, as previously mentioned the T-10-1 until mid 59 then the T-10-1B until the end of the cast iron case t-10 in GM, but while Chevy dropped the iron case T-10 in mid 1961, other divisions used it at least in limited applications thru 1963 and some possible longer.