Updating the 4l60e
I've added a new Signal Converter and replaced almost all of the BOSE amps.
Half of them were rebuild/restored original parts and the other 1/2 of the AMPs were removed so that newer ( & more powerful ) units could be installed in their place.
This is frequently the case with new automotive enthusiasts, who are often so stoked with their new toys, they can scarcely imagine any way of improving upon them.
Chances are, if it was a recent edition, you were fairly bowled over by its performance capabilities, even as a stocker.
Stock mono-leafs with Caltracs bars and subframe connectors.
I just pulled out my old 350 SBC and I'm starting to collect parts for this swap.
I own a mint condition 1988 GMC 1 ton 4 wheel drive pickup (not a duallie) which I bought brand new on Feb. Turned out to get 15 to 16 on the highway, not great, but what an improvement.
While I am not able to respond to everyone on a daily basis like I used to,.....
Other automatic overdrives were available for General Motors cars, their success never equaled that of the T700 and those were eventually dropped.