Just an update as to what I've been up to... Finally got my service manuals, so now I can get to work constructing a 4t80e controller for my N* project... Well, here's the two most important pages from the manual:
Basically, the 4t80e is no different from the 4t60e, except that instead of the vacuum pressure modulator and all that, line pressure is controlled by adjusting the duty cycle of a 614Hz signal. So, if you wanted to have necksnapping shifts all the time (as if you had a shift kit), just leave that part unplugged. It'll revert to full pressure, and that's it. However, what I am looking for, is to adjust between soft and hard shifts... More than likely, there will be a button somewhere that when pressed, will go into "firm shift mode" by disconnecting that signal. I probably will end up going with the stick-shifter rather than 'paddle shift' buttons on the steering wheel though. So, that button will be in a "fighter jet trigger" location on that shifter no doubt. Anywho, thought I'd share. I know somebody was looking for this info (sorry, I accidentally deleted your PM).
*this is for a 94. other years may or may not vary
------------------
Northstar 87 GT in progress... Engine out, waiting for parts.
[This message has been edited by ryan.hess (edited 03-30-2004).]
