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700r4 issues, help Performa or FLT

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Old 10-20-2009, 07:46 PM
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Default 700r4 issues, help Performa or FLT

hey guys, i tried a search, but no luck.. I went thru my first 700r4,.. Ive done alot of 4l60es, but this is my first 700r4.. My issues are, it wont shift out of 1st gear, it doesnt slip at all.. And it doesnt move in the OD position.. The build wen smoothly, but I guess i messed up in th VB some how.. I installed the Trans GO Jr kit too..

Thank you
Old 10-20-2009, 09:57 PM
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wont shift would point to govenor , wont move in OD would point to input sprag
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Old 10-21-2009, 01:16 AM
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Originally Posted by performabuilt
wont shift would point to govenor , wont move in OD would point to input sprag
DOh, if i installed the sprag backwards, would it cause this as well??
Old 10-21-2009, 02:08 AM
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well the no move in od yes it would
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Old 10-21-2009, 07:16 AM
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Franky you must be napping during the day while I'm building transmissions! How do you post 2am and still get rest? I guess a few good cat naps gets you through the day!

As Frank said the sprag and the governor would be two things to look at. It is possible that you have an issue in the valve body. I would check the governor first and make sure the sprag is correct before driving this. Then go from there. Vince Bielanski
Old 10-21-2009, 09:42 AM
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well. looks like i have to drop it again.. Thank you guys, i had a hunch these were my problems. but just wanted to make sure
Old 10-21-2009, 01:54 PM
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well guys. the sprag is correct.. The small splined section freewheels clockwise, and locks counterclock wise.. WHat else shud i look for ?? it wont move in the OD section.. Also, what shud i look for when i inspect the governer
Old 10-21-2009, 06:47 PM
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ALSO, it looks like the 3-4 clutch pack was workin when it was in 1st gear.. The clutches are burned.. Cross Leaks at the Input shaft ??
Old 10-21-2009, 06:55 PM
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are you sure you have the forward clutch accum assembled corrrectly and the transfer tube in place ?
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Old 10-22-2009, 01:05 AM
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the tube was in place. ill check the forward acc. tmw... I didnt dissasmble it tho
Old 10-22-2009, 01:20 AM
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Ok, i did some research, and it seems I am missing the TV exh. check ball ( copper colored)... Wud that cause anty of my symptoms.. Thank you for your time
Old 10-22-2009, 09:32 AM
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help please, ASAP

Last edited by LT1WS6; 10-22-2009 at 07:27 PM.
Old 10-22-2009, 07:27 PM
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ttt ttt
Old 10-22-2009, 11:14 PM
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Update: I think i found an issue.. I have an 87 700r4.. I ordered VB gaskets for an 86.. Right where the Aux VB is, the gasket is missing a hole, where the checkball goes in. If im not mistaken, This would starve the forward clutches and cause my no OD engagement from a stop.. Any input would be nice..


Thanx
Old 10-24-2009, 10:08 AM
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Originally Posted by LT1WS6
Ok, i did some research, and it seems I am missing the TV exh. check ball ( copper colored)... Wud that cause anty of my symptoms.. Thank you for your time
The ball is used as a fail safe if the cable breaks or is out of adjustment. I do not think this is the issue. With some shift kits they tell you to leave the ball out if you are using an aftermarket throttle body.

Originally Posted by LT1WS6
Update: I think i found an issue.. I have an 87 700r4.. I ordered VB gaskets for an 86.. Right where the Aux VB is, the gasket is missing a hole, where the checkball goes in. If im not mistaken, This would starve the forward clutches and cause my no OD engagement from a stop.. Any input would be nice..


Thanx
Definitely sounds like you found a problem there. The reason the trans moved when you went to the D3 range is because the over run clutch was applied and basically aided to the forward clutch and the sprag. Thus it moved.

The part that gets me is why did the 3-4 clutch get hurt? I would get the correct gaskets and also look at a couple of other things. Make sure that you have the ***** in the valve body, case and the auxiliary valve body in their correct locations. Remember to look at the plate where the bath tubs are in the case and VB. Make sure that there is two holes in these locations if you install a ball here. If there is only one hole then a ball does not go here.

Now back to the 3-4 clutch. In the input drum make sure that you have all the seals installed and also that they are good. The one that comes to mind would be the oring that is installed in the input housing for the 3-4 clutch and the forward clutch. If this is missing you will have a cross leak. Good luck and let us know how this turns out. Vince Bielanski



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