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post #1 of 2 (permalink) Old 02-28-09, 10:11 AM Thread Starter
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"Shifting" the PowerStroke

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)
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post #2 of 2 (permalink) Old 02-28-09, 02:42 PM
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Re: "Shifting" the PowerStroke

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.

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'06 Pontiac G6 GT 3.5L 220hp; 64,000m
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