The very limited info I can find on a 427TD says torque peak is 405tq@2600 rpm and 260hp@4000 rpm but I don't know how that can be since I'm governed at 3200.
With 4:56 gears and cruising at 65 I would be at 2298 and at 70 I would be at 2682 rpm. Now I have no problems not using the final gear unless I'm on the flats driving. My worry is my spacing between gears is too much for the 427 though it's a torque monster for what it is and it struggling to get to speeds. The difference between my next option 4:88 is minimal. The 5:29s I've pretty much talked myself out of because of the top speed of 72.
