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Tractor Talk Discussion Board |
Re: OT: 1986 Chevy Truck transmission swap
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Posted by Brokenwrench on November 01, 2006 at 06:33:14 from (69.128.197.135):
In Reply to: Re: OT: 1986 Chevy Truck transmission swap posted by Allan In NE on November 01, 2006 at 03:38:32:
The problem with a 91-92 700 is after 87 they went to computerized lockup. The easiest swap would be to find an 86 or older 700, and if lockup don`t work, pull the solenoid down and put a check ball on top of it. That way it`ll mechanically lock up with third.
But..... like Allen said, good luck finding a good one.
The 87-92s run an auxillary valve body, and a different pressure switch set up. I don`t believe electrically it`d be a clean swap.
Regardless of what you do, if you go to another 700, you have to have a working torque converter clutch lock up system. If you don`t, it won`t be long and you`ll burn up the 3-4 clutches and the 2-4 band.
Another point is that the 700 lives and dies by the throttle valve cable. On the 350 trannys the cable is just a kickdown cable. The 700 relies on the cable to boost pressure as you accelerate.
Alot of 700`s met their doom cause nobody hooked the cable back up or it was adjusted improperly.
Hope this helps Brokenwrench
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