I don't have the slightest clue how fast my truck will run. All I know is it's balls to the wall if I want it to, but speedo only goes to 85, so here are some details, and maybe someone can clue me in what top speed might be. Or, is there a site out there that can give me all the details?
18 speed
Max RPM set to 2100
355 rears (Peterbilt), atleast I'm thinking 355's. It's 35* something
24.5 lo-pro's
70 mph and I'm sitting around 1400 rpm
What yall think?
How fast will my truck run?
Discussion in 'Trucks [ Eighteen Wheelers ]' started by JSmitty, Mar 30, 2009.
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97 mph (assuming 0.73 ratio in top gear)
RoadRanger Road Speed Calculator -
Um....my speedo buries at 85 mph, which about 1700......that leaves me 400 rpm to go.
Guess I need to find out the ratio of the tranny then. Tell you waht, I know it's gotta be around 120 or more, because it actually scares the hell outta me, lol -
100mph + or - a few if U got .73 OD in the big hole.
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Maybe it just feels faster, lol. I never do it, but I have had it there a time or 2, just to see what it would do, lol
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Engine RPM x 60 / (Axle Ratio x Tire Revolutions per Mile x Transmission Ratio) = Top Road Speed (MPH)
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Cool! Thanks for the formula. Wonder how I go about finding out what ratio the tranny is? Run the numbers on it?
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2100rpm,0.73 ratio in top gear,2.64 rear ratio,24.5 lo-pro tires gets U 134.87 mph + or - a few.It would probably have a he!! of a time tryin to get out of its own way tho.lol
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