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-   -   Help: 700r4 Troubles (https://67-72chevytrucks.com/vboard/showthread.php?t=469200)

West Texas Z 06-12-2011 10:56 AM
Help: 700r4 Troubles
 
Asking this for a friend. Its a 79 Chevy Shortbed.

Quote:

Ok, dropped my TH350 and replaced it with a 700r4. Swap went fine, but I am having shifting issues, TV cable has been adjusted and re adjusted, I am pretty certain it is where it needs to be. TCI lockout converter installed.

I have reverse, and first all the time, I have 2nd and 3rd for a stop light or two, then they go away, rarely have the OD 4th gear. I can readjust the TV cable and get 1,2,3, and 4, but 2,3,4 go away after a mile or so. readjust, then they come back for a mile or two, then go away again....
also, shifts are nice, not soft and stacked, they are spread about where they should be.

Hope this is enough info to get some feedback.

Pulling my hair out over this...

ANY ideas???

West Texas Z 06-12-2011 07:49 PM
Re: Help: 700r4 Troubles
 
anyone? please.

Goats86 06-12-2011 08:26 PM
Re: Help: 700r4 Troubles
 
Several ideas, did you just rebuild it? If so, the anchor pin on the band might have missed the hole in the band. If you had the valve apart, sometimes the valves stick even though you might have cleaned them well. When I put mine back together, it was the TV sticking. Pull the cable loose at the carb, and yank it quickly a few times, sometimes that will get it unstuck.

1LowToy 06-12-2011 11:27 PM
Re: Help: 700r4 Troubles
 
You may want to look this over http://www.rowand.net/shop/tech/auto...issionswap.htm

I'm planning that conversion but with an inline six. From what I gather the cable pressure curve is very sensitive to the operation of the tranny.

West Texas Z 06-13-2011 09:16 AM
Re: Help: 700r4 Troubles
 
Thank you guys, I'm going to let him know this info and see what conclusion he can get. I appreciate it. :chevy:

West Texas Z 06-13-2011 04:47 PM
Re: Help: 700r4 Troubles
 
Quote:
Originally Posted by Goats86 (Post 4731838)
Several ideas, did you just rebuild it? If so, the anchor pin on the band might have missed the hole in the band. If you had the valve apart, sometimes the valves stick even though you might have cleaned them well. When I put mine back together, it was the TV sticking. Pull the cable loose at the carb, and yank it quickly a few times, sometimes that will get it unstuck.
Quote:
Originally Posted by 1LowToy (Post 4732223)
You may want to look this over http://www.rowand.net/shop/tech/auto...issionswap.htm

I'm planning that conversion but with an inline six. From what I gather the cable pressure curve is very sensitive to the operation of the tranny.
To answer a previous post, I have not rebuilt it, but i have added the following:

1. B&M shift improver kit
2. TCI lockup converter
3. possibly going to add a "corvette" servo
4. new fluid, filter, and gasket.
5. new TV cable


any thoughts??

ont_guy_38 06-13-2011 05:06 PM
Re: Help: 700r4 Troubles
 
Pm Clinebarger or Transbuilderguy I'm sure they would be happy to help you.They are both some of the awesome people we have on this board


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