ACZL wrote:
Went past a Ford dealer couple weeks ago and noticed he had 2 SD dallies on the lot. Stopped by the following week to take a gander at them. 1 was a 450 Lariat and the other a 350 XLT. 79 and 70K respectively. Anyways, didn't spend a whole lotta time there, but on the 350 (very well equipped), it was a '21, 4.10 gears and had the 10 speed tranny. So it got me to thinking and perhaps a little drooling too, but what is the RPM difference between a 4.10 6 speed and 4.10 10 speed at 60-70 mph? On my '17 350 w/ the 4.10 6 spd, I'm at 2100 at 70 mph.
With my 7.3L, ten speed and 4.30, I run just under 2,000 rpm at 65 mph. I think the 4.30 and 7.3 is an excellent combination.