Rebuild it or Leave it alone

[project62]

Bought a torqueflite 727 at a swap meet last summer. The guy i bought off of said it is from 70 superbee. Do we rebuild it or not? If we decide to rebuild it my oldest son is going to take it to school and rebuild it there with the guidance of his instructor. In your opinion what is the best rebuild kit you have used or would recommend? Thanks

 

[WileE]

I would never install an "unknown" quantity.

 

[Fran Blacker]

I agree with WileErRobby. There is an air test you can do. Remove pan and valve body, you pressurize clutches and slave cylinders. If you hear air leaking it's ng. It doesn't help if something else is bad. The plus is if those seals leak you know before you start. If instructor has a service manual your son should read it before he starts tearing into it. If you want to do the air and don't have a manual to show you where to pressurize I can post a picture where do it.

 

[moparnation74]

I wouldn't test a thing......Rebuild it....Period!

Furthermore, what a great learning experience for your son...........

 

[project62]

I agree with you moparnation74. Do you think this book would come in handy? And what kit would you recommend?

 

[moparnation74]

Rebuild kit:
http://www.manciniracing.com/mana7per1.html

or

http://www.turboaction.com/TranzBox.html

Shift kit:
http://www.transgo.com/products.php...id=79&countdisplay=3&start=0&addcountview=Yes

No better reference than the factory service manual......that book above is a good reference as well

 

[khryslerkid]

Rebuild and buy a new torque converter.

 

[dvw]

I agree with you moparnation74. Do you think this book would come in handy? And what kit would you recommend?

View attachment 386016

That's a good book. These are easy transmissions to work on. No need for any special rebuild kit. Rabestoes clutches, a kickdown band, steel ring kit, seal and rubber kit. Have him take his time. I had my son building his own when he was 17.
Doug

 

[aldal]

Let your kid rebuild it, can completely clean it inside out, put in new seals, clutches and such plus learn along the way. Good luck

 

[Xp29h]

Definitely have your son take it to school to rebuild. It will feel a great expirience for him and you'll get a rebuilt 727!! Win Win!

 

[project62]

Update on the transmission. Ordered a complete rebuild kit from Mancini Racing.
http://www.manciniracing.com/ma727trwistp.html
He took it to school a few weeks ago tore it down and put it all back together and brought it back home today. He said the book helped him out some but said it seemed more geared towards the more experienced trans builder. Any way to test it before we put it in the car? He was going to ask his instructor if he could hook it up to the 440 they have sitting in the shop that needs broke in. I'm guessing he didn't ask.

 

[GetX'd]

When I was younger I spun a rod bearing in my GTX. I didn't have a lot of money and didn't trust the local shops cause I was so inexperienced. Instead I took the car to a very highly respected auto mechanics tech school in Minneapolis. They tore that whole motor down to nuts and bolts and rebuilt it. They only thing they wouldn't do for me was put in a high performance cam. I already had a mild cam that was a little worn - but they would only build with stock parts so I had them leave the cam that was in there. I could not have been more happy with the work the school did. It cost me $500 in parts - no labor charges. This was back in the 70's. I wouldn't hesitate to take that tranny to a good school and have them rebuild it. They did my car over the winter which was a bonus because it would have just been stored anyway. They take their time, are supervised and usually do great work. My experience was back in the day but was a good one.

 

[oldbee]

If your son screwed something up there probably would have been broken pieces falling out while doing it. Go for it. My first race trans worked like a charm and I had no experience; just went by the manual(with a few updates added in).

 

[dvw]

Update on the transmission. Ordered a complete rebuild kit from Mancini Racing.
http://www.manciniracing.com/ma727trwistp.html
He took it to school a few weeks ago tore it down and put it all back together and brought it back home today. He said the book helped him out some but said it seemed more geared towards the more experienced trans builder. Any way to test it before we put it in the car? He was going to ask his instructor if he could hook it up to the 440 they have sitting in the shop that needs broke in. I'm guessing he didn't ask.

With the pan and valve body removed the clutches and bands can be air checked for leakage. The hard parts (planets, thrust washers, etc) are pretty straight forward. If he followed the book and didn't mess with the valve body you should be fine.
Doug

 

[project62]

After talking with him. They put shifting rod on and ran it through the gears and he said it shifted fine and with the help of his instructor they did air check and his instructor was very pleased with how everything operated. Can't wait to get the motor done now.