Re: Jeep GC still the best steering box upgrade?
The only issue is what T-bar do they have? The JGC box has the .195 T-bar, so you get better road feel and a little heavier steering. The factory boxes have the .175 T-bar and quite light steering and less road feel.
I had an AGR box with a .210 T-bar. It was very heavy steering, but also defective and wouldn't return to center at all. AGR stood by it even after it was out of warranty and sent me a new one, and they also sent me one with a .204 T-bar instead at no charge. I haven't installed it yet, so I still have a reman stock box with the light .175 T-bar in it.
Once my current to-do list is done, and I have time to mess with it, I'll swap in the AGR box, see if it works right and also check the feel. I'm hopeful, plus the AGR is sunk cost and out of warranty now so if it doesn't work I'll get it rebuilt as it should have plenty of good parts to work with and has the nice billet cap and housing end (I'm not looking for stock appearance.)
So it's not just the fast ratio, it's also the T-bar size and thus road feel.
1972 Chevelle, 454, 200-4r non-lockup, 12 bolt 3.73
1981 Camaro Z28, 355, TH350, 3.73