ET1USN

Trying to find some reference for RPM - to - MPH. For instance, when I am running on the highway at 65 mph, my tach is reading about 2.3 x 1000 RPM. Is this correct/average for the v-10? It seems a little high to me. Any help here would be greatly appreciated.

351w

that sounds about right to me but the determining factors are the ratio of the trans you have and the rear end ratio.
in my other truck with a C-6 auto and 350 gears @ 65 mph i would be running 3,000 rpm.
so my estimate would put you around 2,300 - 2,500 with a 4 th gear not knowing the gear ratio.

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i would rather push my Ford than drive your Chevy !

89F150

Mine with a 5 speed manual, 4.10 rear end ratio sits at around 2500- 2600 rpm (from memory) at 65mph (105 kph). So i reckon 2300 is pretty good.

davidzog

Agreed...with a 4.10 rear end, I am running abour 2200-2300 at 65 mpr, and about 2500 at 70 mph

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2006 F-250 Duper Duty
V-10 6.8 Liter
6 Speed manual
Positraction
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2005 Pilgrim 5th Wheel