help with ID this Borg Warner

rabbit64cs · Canadian Poncho Superstar!

help with ID this Borg Warner

rabbit64cs · Canadian Poncho Superstar!

I've been searching the net...

I was told that it was a T-10, but from what I've read , being this has a 26 spline input shaft? it would be a ST-10? richmond built cast case ST-10 for the aftermarket???

Islander · Addicted!

From my dusty memory the cast iron case with aluminum tailshaft was a Super T-10 probably mid seventies to early eighties. There was one in my 1980 Z-28, I thought it was an oddball with this combination. My 78 Z-28 had an all aluminum case. The one you have should have a fine spline output as well as the input like the late Muncie that was produced until about 1974. I think the early GM T-10 (up to 63?)were all cast iron. I think T-10 and Super T-10 transmissions were made for other makes as well. Hot Rod Magazine had a two part article during 1980 or 81 that was a guide to the various 4 speeds at the time, if you happen to have these magazines in you collection. Most of the info on GM transmissions in the Hot Rod guide seemed to be fairly accurate from my experiences.

KC

-- Edited by Islander on Tuesday 20th of April 2010 12:20:00 PM

rabbit64cs · Canadian Poncho Superstar!

thanks,,I'll root through my Hot Rod mag collection, most likely have it .

And yes,, I was reading , and AMC, dodge, and Ford used the Borg as well.....

thanks....

68post · Poncho Master!

Rog, it's definitely an ST-10, here's a quick bit of info I found online.

http://www.dandltransmission.com/borgratio.html

I have more detailed info at home, but this should answer your question. I've been looking for a 2.64 first gear ST-10 for awhile now, but might be interested in the 2.88 ratio model if you were thinking of selling.

rebelrouser · Poncho Master!

I have had at one time over 10 ST-10's of all gear ratio's and the 4 ring does denote 2:88 first gear and available in the Corvette.I searched long and hard for one.And it should also have an aluminum body as well as a aluminum tailshaft.I also have a list of every gear ratio for the ST-10 somewhere in my mag. collection.ST-10's have soooo many ratio's that it's mind boggling.And just a note that ST-10's came in T/A's,Camaro's and Corvette's up to '82 'cause I had one w/ a 3:42 first gear but it had provisions for the torsion bar that ran length wise from the diff to the tranny.Really wierd looking I thought.And it was all aluminum as well.

68post · Poncho Master!

Here's the site I was looking for. Good info for everyone. wink

http://pontiacpower.org/BW.htm

rabbit64cs · Canadian Poncho Superstar!

good reading..thanks!!

66 Beau · Poncho Master!

I haven't seen a ST-10 for years (say mid-70's), but I as I recall, the one I saw had ST-10 cast right into the casing. The T-10 beside it had T-10 cast in the same place.

Is my memory bad or do some of them have the ST10 cast in them and otherrs don't?

65wagon · Poncho Master!

66 Beau wrote:

I haven't seen a ST-10 for years (say mid-70's), but I as I recall, the one I saw had ST-10 cast right into the casing. The T-10 beside it had T-10 cast in the same place.

Is my memory bad or do some of them have the ST10 cast in them and otherrs don't?

for the car it came out of check the intermediate plate and the flat pads for stamps these even give gear ratios, they came in some zds and TAs got one tough trany good gears

rabbit64cs · Canadian Poncho Superstar!

just reading on the pontiacpower link from 68POST, excellent info,

I think I've narrowed it to a

BW-A59-T10Y BW aftermarket
74-81 Code Y 2.88/1.74/1.33/1.00
4 groove input
Nod. Iron 904 case , Nickel gears.

now to order a rebuild kit. any suggestions for or where to order parts??

I counted the gears on the main shaft, this is the only combo that fits the chart (18/21/24/29 )

I will check the intermediate plate for more info tommorrow....

thanks for the help.

65wagon · Poncho Master!

now you can run those really high gears and still smokem