Yellovette

Hello all. New to this Forum since I got my 04' Super Duty F-250. Looks like I'll have a lot of useful information available here.

Q. My truck has the manual transmission. Can any of you out there who are also running the diesel through a manual tell me what RPM's you're shifting at on level ground? I'd like to be sure I'm not overreving.

Thx.
(Ed)
Yellovette

360ci

There's no need to shift above 2500rpm unless you're towing and need the pulling power. With the low end torque I'd shift around 1800-2000rpm and that'll put your next gear down to around 1200-1400rpm which is plenty to keep going without having to worry about engine lug and heating up the transmission. On a level surface with no load or trailer you can cruise at 1000rpm easily to get the best mileage. I had a Cummins 5.9L that I used for work occasionally with the old 5 speed. PS 7.3/6.0L are similar in torque & rpm peaks.

__________________
'00 Durango R/T 360ci 290hp (modded); 138,500m
'06 Pontiac G6 GT 3.5L 220hp; 44,000m
'12 Chrysler 200 Limited 3.6L 283hp; 13,000m
'99 Taurus 3.0L 2V Vulcan 145hp; 154,300m - Traded
Amsoil in all vehicles!