Borg-Warner T-10 Advice

[Arthur T.]

The time has come to have the T-10 on my '58 restored.

This is the original transmission. When it was last driven, it was exhibiting sync problems in 2nd gear. It would also slip out of gear easily. I think the repairs needed are new sync gears and the shift rings need to be replaced with the newer tapered tooth design that locks the gear in as torque is applied. The case is pretty grubby and needs a complete refinish.


I have seen various restoration services offered.
We have one guy locally here in Rochester I might trust with this project.
I know how to rebuild this transmission, but I do not have the tools necessary, in particular, I do not have a press.

What would you folks do to get an NCRS restoration on a late '58 T-10?

[Joe L.]

Re: Borg-Warner T-10 Advice

The time has come to have the T-10 on my '58 restored.

This is the original transmission. When it was last driven, it was exhibiting sync problems in 2nd gear. It would also slip out of gear easily. I think the repairs needed are new sync gears and the shift rings need to be replaced with the newer tapered tooth design that locks the gear in as torque is applied. The case is pretty grubby and needs a complete refinish.


I have seen various restoration services offered.
We have one guy locally here in Rochester I might trust with this project.
I know how to rebuild this transmission, but I do not have the tools necessary, in particular, I do not have a press.

What would you folks do to get an NCRS restoration on a late '58 T-10?

Arthur------


You can purchase an adequate press for about 100 bucks from sources like Harbor Freight. Even that is not absolutely necessary but it helps to have one. Otherwise, you really don't need any special tools. Send the main case, extension housing, and side cover to an aluminum refinisher like Jerry MacNeish or Ken Kayser. Then, re-assemble the trans. Done.

For parts, Larry Fischer. Just about anything you'll need.

[William C.]

Re: Borg-Warner T-10 Advice

The "torque loc" sliders are at best a band-aid. If you are going far enough to disassemble the whole thing, buy a new second gear to fix the issue forever. The T-10 has a design flaw that stacks up all the clearance in the trans in the wrong direction on second gear coast. The Muncie incorporated a flange as well as more depth on the synchro engagement teeth to fix the problem. Not really sure what you need a press for, but as mentioned, a functional unit is pretty chaep these days. Learned a lot on my '58 T-10 about 45 years or so ago...same problem.

[Joe R.]

Re: Borg-Warner T-10 Advice

A press is not needed to rebuild a T-10. Wanta remove one of the gears. Just rap the main drive on a wooden 2 X 4 placed on the floor. Easy to rebuild a T-10 or Muncie.

JR

[Joe L.]

Re: Borg-Warner T-10 Advice

A press is not needed to rebuild a T-10. Wanta remove one of the gears. Just rap the main drive on a wooden 2 X 4 placed on the floor. Easy to rebuild a T-10 or Muncie.

JR

JR------


Yeah, you can do it that way. In fact, that's how I was taught. However, I prefer to never use impactive force on anything if it can be avoided. In this case, a press avoids it.

[Arthur T.]

Re: Borg-Warner T-10 Advice

JR------


Yeah, you can do it that way. In fact, that's how I was taught. However, I prefer to never use impactive force on anything if it can be avoided. In this case, a press avoids it.

I do not subscribe to hammer mechanic methodology. In fact, hammer mechanics are exactly who I aim to avoid.

[Ray K.]

Re: Borg-Warner T-10 Advice

Arthur

You should plan on as a minimum a new second speed gear and a new 1st / 2nd synchronizer assembly plus the synchro rings for 3rd / 4th ; bearings front and rear, all small parts and new rear bushing and seal. You may find other items that would be advisable to replace when the transmission is dis-assembled.

Ray

[Arthur T.]

Re: Borg-Warner T-10 Advice

Arthur

You should plan on as a minimum a new second speed gear and a new 1st / 2nd synchronizer assembly plus the synchro rings for 3rd / 4th ; bearings front and rear, all small parts and new rear bushing and seal. You may find other items that would be advisable to replace when the transmission is dis-assembled.

Ray

Thanks. I suspected many of these parts should be replaced in a restoration. Specifically, the 2nd gear. Was this a design problem as other posters have alluded to? I drove this car hard back in the mid-70's and I noticed issues shifting into 2nd in both directions. I actually got into the habit of double clutching this gear. I assumed the problems were just a worn synchronizer gear. Seems like it was more than this. Do you know any more about this?

Art.

[Timothy B.]

Re: Borg-Warner T-10 Advice

Arthur,

In addition to what others mentioned, check the shifter forks for wear along with the sliders.

[Joe R.]

Re: Borg-Warner T-10 Advice

Arthur,

The T-10 has been with the Corvette from 57 to 63 and then again later as the Super T-10. It's a great design that is rugged and will last thousands of miles. It was NOT designed for 16 year old kids to bang on!!! Power shifting (that's never letting up on the gas) and Speed Shifting (letting up on the gas) will destroy any transmission if you miss time your left foot!!! Muncie's did not solve the problem of second gear wear when the driver misses the gear! Even the so called bullet proof M-22 Rockcrusher would spit out second and third gear to a 16 year old trying to show off on Saturday night!!!

Looks as though you have had many miles with your 58 T-10 and probably drive another 100,000 after the rebuild.

JR

JR

[James G.]

Re: Borg-Warner T-10 Advice

The time has come to have the T-10 on my '58 restored.

This is the original transmission. When it was last driven, it was exhibiting sync problems in 2nd gear. It would also slip out of gear easily. I think the repairs needed are new sync gears and the shift rings need to be replaced with the newer tapered tooth design that locks the gear in as torque is applied. The case is pretty grubby and needs a complete refinish.


I have seen various restoration services offered.
We have one guy locally here in Rochester I might trust with this project.
I know how to rebuild this transmission, but I do not have the tools necessary, in particular, I do not have a press.

What would you folks do to get an NCRS restoration on a late '58 T-10?

Your first line says ''58 REST0RED''. My first glance I thoght you said ''RESTO-ROD'' at which time my thought was to buy another trans and ''save'' this old original. Only 3764 T-10'S were made in 58 on top of the 664 units made in 57. Both are hard to find today and cost has been as high as $7500 for a ''real'' one. On the other hand, if you have a 100% original car, save all the original parts.
In Southern California JEFF READE 310-397-3800 or STEVE LUVISI (714) 596-5034. Both are very good and know the product well.

[James O.]

Re: Borg-Warner T-10 Advice

another thing to check. often a passenger car driveshaft yoke was miss-used on these T-10's instead of the corvette yoke which is longer. the shorter yokes tend to twist the end of the transmission tailshaft because they only engage the rear portion of the tailshaft. so make sure the longer corvette yoke slides freely all the way in. BTW, i think the repro corvette yokes are cast in china and not forged as originals so try to find a good used original. jim o.

[Arthur T.]

Re: Borg-Warner T-10 Advice

another thing to check. often a passenger car driveshaft yoke was miss-used on these T-10's instead of the corvette yoke which is longer. the shorter yokes tend to twist the end of the transmission tailshaft because they only engage the rear portion of the tailshaft. so make sure the longer corvette yoke slides freely all the way in. BTW, i think the repro corvette yokes are cast in china and not forged as originals so try to find a good used original. jim o.

Anything made for this car in China is a forgery. I will install no Chinese trash on this restoration.

[Dick W.]

Re: Borg-Warner T-10 Advice

another thing to check. often a passenger car driveshaft yoke was miss-used on these T-10's instead of the corvette yoke which is longer. the shorter yokes tend to twist the end of the transmission tailshaft because they only engage the rear portion of the tailshaft. so make sure the longer corvette yoke slides freely all the way in. BTW, i think the repro corvette yokes are cast in china and not forged as originals so try to find a good used original. jim o.

I would question any cast yoke. I doubt it would stand one hard shift. Cast steel or iron is somewhat fragile.

[Bruce B.]

Re: Borg-Warner T-10 Advice

Anything made for this car in China is a forgery. I will install no Chinese trash on this restoration.

I wouldn't use chinese trash on any restoration or even on street cars if a U.S.A. made part can be found.