Thanks for the reply. Almost done my swap from 3.21s to 3.93s should wake it up some.My 1975 Service Manual says 4.4 PTS, (3 1/2 Imperial). I've got my 8.25 on the work bench redoing the gears to a sure grip and 3.55. Good luck.
Nice. When you do get a chance, that 355 gear set is perfect for fuel mileage and acceleration. I am working on a 73 Duster. 318 3-speed 8.25. Soon to be a 340 4-gear. It was a 340 4 speed originally.Nice, that will work. I'm going from an open 2.45 to sure grip 3.55. I've never had mine on the road except for in and out of the garage in my driveway, so I really don't know what to expect. What A-body do you have?