747 swap - TCC control using kick down output from ECM

[Marc Piccioni]

The transmission in question is a Turbo 350 3 speed. There are pressure 
switches tapped into the valve body that control when the TCC is applied. 
The target vehicle has a ported vacuum operated switch that closes during 
cruise conditions. The vacuum is tee'd off of the EGR port on the Qjet.

On my other vehicle the 4L60 also has similar switches and is factory wired 
to L/U in 4th gear only, the original application for this transmission is 
a '91 Camaro. The valve body is configured to allow WOT operation in 4th 
gear. I bought the transmission direct from GMX ( factory rebuilt).

/Marc

----------
From: 	David A. Cooley[SMTP:n5xmt at bellsouth.net]
Sent: 	August 22, 1999 4:39 PM
To: 	gmecm at efi332.eng.ohio-state.edu
Subject: 	RE: 747 swap - TCC control using kick down output from ECM

Curious what trans your dealing with...
All the GM 200-4R's, 700-R4's, 4L60E, 4T60E, if power and ground were
applied to the TCC solenoid, they would lock up in 2nd gear and up...
None of the shift kits etc, had an option to change the hydraulics to only
lock up in 3rd or higher, so how did you accomplish it?


At 08:51 PM 8/21/99 -0600, you wrote:
>Shanene,
>
>let me complete fil in the details i didn't provide earlier.
>
>The TCC circuit will be wired as follows:
>
>B+ to brake (TCC) switch open when brake pedal is depressed
>
>brake pedal to N.O. relay contact (to be verified after installation)
>
>relay output to trans.
>
>The internal wiring/pressure in the trans. prevents L/U from occuring
>unless the trans. is in 3rd gear.

===========================================================
            David Cooley N5XMT           Internet: N5XMT at bellsouth.net
      Packet: N5XMT at KQ4LO.#INT.NC.USA.NA   T.A.P.R. Member #7068
    Sponges grow in the ocean... Wonder how deep it would be if they 
didn't?!
===========================================================



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