Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - 700R4 Line Pressure
View Single Post
  #8 (permalink)  
Old 12-28-2012, 05:18 PM
Crosley's Avatar
Crosley Crosley is offline
Global Moderator
Last wiki edit: T-350 rebuild tech
Last journal entry: 1962 Morris Minor 1000
Last photo:
Join Date: Nov 2002
Location: ... USA
Posts: 9,277
Wiki Edits: 1659

Thanks: 963
Thanked 301 Times in 265 Posts
Originally Posted by Edgar86 View Post
Thanks Crosley, I'll check the cable tonight. I had no idea that the large check ball was a line pressure "fail safe". I did re-install it during rebuild... my question is (if you don't mind) why do think some builders remove this check ball? Would it not provide protection in case the TV cable broke or became disconnected?

Yes the fail safe check ball works well in most situations. When folks started installing the 700 - 4L60 trans in to various applications, geometry of the carb linkage would often be incorrect.

Folks could get a tight cable at WOT , but the minimum setting would be loose on the cable and the trans would go into 'fail safe ' mode.

You may also have a worn TV valve bore in the valve body.. the oil can get behind the valve and move the valve to full apply.

Dont worry how old you are... it is the mileage on your body that adds up.
Reply With Quote
The Following User Says Thank You to Crosley For This Useful Post:
Edgar86 (01-03-2013)