I have solved one of the custom things I had been concerned about for a while - marrying the Fiero shifter cable to the Cadillac 4T60.

I had heard conflicting statements on the subject.
One was that you will lose a first gear position since the new trans has an additional gear (overdrive).
I had also read that with a little mod you can reach 1st gear just below the "1" in the console providing the cable is set up just perfectly.
I had noticed when installing the new Camaro shifter, than you can move the cable (with it unhooked) one notch below "1" on the console without trouble.
I wanted to be able to shift through the gears myself on occasion, so I took the extra time trying to achieve this.

Here is what seems to have worked for me:

The first thing I needed to find was a mounting location on the newly rebuilt trans.
I found these two 10mm bolts and carefully removed them keeping an eye on the gasket/silicone adhesive and nothing moved.
They were not overly tight and remove easily without problems:




After a test fit, I realized that the holes on the Fiero bracket that seems like it would fit when held up to the bolts, did not align perfectly, so I used a 4" angle grinder to open up the rear hole to a slot:




Next I realized the actuator lever on the trans was much less offset than the stock Fiero TH125c.
I have seen guys sites where they cut and rewelded the lever flater - I just pryed the one off the cable and swapped it with the flatter one:




Here is an overhead shot.
In order to get the best alignment possible, I used a nut as a spacer on the rear mount to get a better angle to the Fiero trans switch that was swapped on to the trans earlier.
You will notice that the cable length is set up as long as possible in the bracket and the whole bracket was bent upward slightly, all in an effort to make it long enough to reach 1st gear / 7th position.
When the cable is shortest it is in Park vs. longest in 1st - P-R-N-D-3-2-1




It did work but I was watching the cable moved as I shifted and they was a tendacy for the cable to bend while trying to reach first due to the cable already being set up to its longest position and partly due to the fact that the alignment still wasn't perfect.
Unfortunately, I couldn't shim the bracket out any further to correct the angle as it would be too short and interfere with the trans bracket to mount.
The solution was to drill the bracket and install a bolt and nut through it to provide the cable housing with a little extra support while reaching 1st gear in its longest position.




This fix allowed all gears to be engaged smoothly without regard to how lightly or slowly you moved the gear selector:

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1986 Fiero2m8 (LT1 NX / 4T60 Roadster Build)
http://www.fiero.nl/forum/Forum2/HTML/071642.html

The second computer to control the LT1 is going to be located in the trunk here:




I made a sheet metal cover and painted it black to match the black / grey carpet that will be installed in the trunk:




I ended up relocating this distribution block to the shock tower as the wires to the 4T60 were a touch short - they were just barely long enough with the old transmission so moving it here solved the problem without having to cut any wires:




When reversing the intake - all the throttle body harness lines were easily long enough as it is closer to the computer now.
The only one that would need to be extended was the EGR, but I'm not using it in my setup so it will be unused and safely tucked away:



Basically, the other than the nitrous wiring, all that is left is running a pair to the fuse box for ignition power and the brake switch.



Fiero2m8

[This message has been edited by Fiero2m8 (edited 07-20-2006).]