Beaner_88

We are hoping to do a 4.3L swap soon, and we got thinking about how to mount the torque arm to the transmission. There is no spot to mount the front of the arm to the transmission, so we dont know what to do. Are there any LS Swap guys that could have a possible solution to the problem? How are you guys mounting the front end of the arm? Do we have to make a custom bracket, or swap out the very end of the transmission? Any information on the problem would be greatly appreciated. Thanks.

eliofall

the 4l60 you are you are using, what was the donor car it came from?

vetteoz

iTrader: (13)

Swap on a tailshaft housing from a 3rd Gen 4L60 or T700

Or you buy a kit to mount the arm on a cross member
http://www.umiperformance.com/catalo...bdq3liis264de1

skirkland1980

iTrader: (2)

I use a custom arm with its own crossmember.

Time2Fly

This, or if the 4L60E is a later version with a six bolt tail, look for a 4th gen 6 bolt F body tail (check Ebay) and use the 4th gen torque arm mount. Depending on what your 4L60E is out of, you may have to change the output shaft also.

jmd

iTrader: (4)

what transmission are you using?

vetteoz

iTrader: (13)

Hidden in his tittle
Torque Arm to a 4L60E Transmission

Beaner_88

The transmission is a 4L60E from a 2000 S-10 Truck.

Beaner_88

The truck had an electronic speedo as well. We haven't figured out what to do about the speedo yet, as the 88' has a cable and the truck has an electric speedo. Would swapping the tail end of the transmission to a 4th gen Camaro affect this at all as well?

vetteoz

iTrader: (13)

What induction are you running on the 4.3?
If you are running EFI then you will need the signal from the VSS in the trans

fireburdluvr85

get ready to pay for the tail shaft housing.... aint cheap as im in the same boat of looking.

Time2Fly

I believe the tail housing on that (S-10) transmission is the same as what came on a 4th gen Camaro. Below is a 4th gen Camaro tail shaft, yours should look the same.

Do some research, and I think you will be able to find some kind of an interface that will allow you to convert the late 4L60E speed sensor output to mechanical.

Beaner_88

Thanks for all the help guys. Sorry for the late reply been busy. I think that we have a general idea of what we want to do now. As for the speedometer, I will look into that further with the information given.

Beaner_88

Does anybody know the length of the tailstock of a 700R4 transmission out of a third gen? We did not have a motor and trannie with the car and not sure if the driveshaft is fitting into the 4L60E far enough. Thanks

Pocket

iTrader: (24)

700R4, 4L60 and 4L60Es are the same length and use the same driveshaft

With the engine swap you can move the drivetrain forward/back to suit, so decide where you want it and worry about the driveshaft last

The 4L60E will output a 40ppr signal which a newer 4.3 PCM will understand, then you need an electric to mechanical driver box for the speedo. Cable-X comes to mind. IMHO, swapping the speedo to an electric version is better

Personally, I wouldnt worry about the torque arm mount on the tailhousing. Fabbing a simple bracket to attach the factory TA mount to the trans mount flange is not hard

Zeromitch87

iTrader: (5)

having this problem too. could go full red neck and use 2 u bolts to the tailshaft. I'm going to try and fab something I guess.

Pocket

iTrader: (24)

The TA must be free to slide F/R, so pinning it to the tailhousing will bind alot of things

cosmick

I disagree. Locate the 4L60 on the factory 700R-4 mount, so the shifter cable and speedo as well as the trans mount and torque arm will all match up, then the back of the engine will be where it should, and you really don't want to ever move any engine forward of that.

Zeromitch87

iTrader: (5)

I just said screw it and bought Spohn's crossmember mounted adjustable torque arm. I like the design better than tailshaft mounted.

novaderrik

just out of curiosity, you aren't going to try to use a 4X4 transmission, are you? the output shaft is shorter and it has a housing designed to mate up with the transfer case..

Beaner_88

Cant believe this thread is still going. Scraped the 4.3L idea as the computer is not able to run independantly without all the interior circuitry. Thinking LS swap now though, so the speedo stuff still comes to mind.

Zeromitch87

iTrader: (5)

no 4x4 it was a fbody 4l60e, drive shaft fits the same as the 700 did. I wonder how I'm going to get my speedo to work. plug is different on tailshaft and could not swap them. duck tape and GPS speedo on my smart phone will have to work until I figure it out.

Pocket

iTrader: (24)

Dakota digital or do an OBDII conversion

Not sure how you're controlling the 4L60E without one though...