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#1 |
Registered User
Join Date: May 2007
Location: Norway
Posts: 8
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Small 700r4 wiring question
I'm about to finish installing my 700r4 transmission and I'v run into a small problem. I used the Bowtie Overdrives lock-up kit, and this kit comes with a new 4th gear pressure switch. The instructions tells me to replace my old one with the new. The problem is, that I can't seem to find the old pressure switch. I'm including a picture of my old wiring, a picture from the manual and also a few pictures of my attempt to solve the new wiring. Is this correct? Or maybe anyone knows if the pressure switch is located somewhere else? Thank you!!
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#2 |
Senior Member
Join Date: Apr 2005
Location: Joppa, Maryland
Posts: 4,408
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Re: Small 700r4 wiring question
You have it in the right position. That is the 4th gear clutch switch. The plug just to the left in the 3rd picture is for 4-3 downshift.
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1997 GMC Sierra Ext 1965 Mustang Last edited by 70GMCer; 03-10-2008 at 04:36 AM. |
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#3 |
Senior Member
Join Date: Apr 2005
Location: Joppa, Maryland
Posts: 4,408
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Re: Small 700r4 wiring question
Is that tranny rebuilt? While you have that cover off, did you look into the 1-2 accumulator housing to make sure that spring inside is not broke? That's the housing in the lower right corner of picture 3. That spring inside has a bad habit of breaking. Have you did any other mods to it?
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1997 GMC Sierra Ext 1965 Mustang |
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#4 |
Registered User
Join Date: May 2007
Location: Norway
Posts: 8
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Re: Small 700r4 wiring question
Thanks for the respons. No, I'v done no modifications to the transmission. It comes from a -86 Camaro, and I took the car for a ride before the seller removed it from his car. Everything seemed fine and it shifted smoothly. Could be that the previous owner of the Camaro may have rebuilt it, but I don't know. What puzzels me is that I can't find the pressure switch described, but as I understand there were several options on wiring in these cases.
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#5 |
Sisyphus was my mentor!
![]() Join Date: Sep 2002
Location: Carleton Place, Ontario CANADA
Posts: 984
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Re: Small 700r4 wiring question
Put in a high pressure boost valve in the pump as long as you at it. It's only a snapring to change & that is THE KEY to long 700r4 life. It's the best $33 you'll ever spend.
http://67-72chevytrucks.com/vboard/s...d.php?t=276045 http://www.hotrodders.com/articles/T...ification.html http://purplesagetradingpost.com/sum...o/700R4p1.html http://links.chevelles.net/links/Wor...l_Auto_Tranny/ http://www.geocities.com/crosley_az/4l80e.htm http://www.geocities.com/crosley_az/700id.htm http://www.hotrodders.com/forum/chev...R4+Information
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passthebuck ![]() #5642 -TWO 1967 GMC 910's. One with L6/3-on-the tree and the other with 355 w/435hp & a 700r4. -a 2013 Honda Civic as my "sensible" car Last edited by passthebuck; 03-10-2008 at 09:25 PM. |
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#6 |
Registered User
Join Date: May 2007
Location: Norway
Posts: 8
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Re: Small 700r4 wiring question
Thanks for the links.
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