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Old 08-03-2011, 04:03 AM   #16 (permalink)
texanidiot25
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Join Date: Jul 2008
Location: Cypress, TX
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Formula - '96 Firebird Formula/Trans-Am
90 day: 19.31 mpg (US)
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Quote:
Originally Posted by Old Mechanic View Post
The 92 F150 has a very tall final drive ratio, 1550 RPMile in 5th gear. On a recent 860 mile trip, I started back on Interstate 20 in SC and accidently left it in 4th gear for 10 miles. It was dark outside and it took that long for me to realize my mistake.

Truck got 20 MPG at 70 MPH which worked out to 1800 RPM in 5th gear (.79 OD with a 2.73 rear, 28 inch diameter tires).

regards
badger
Just imagine if you could get a T56 in there.. .50 OD
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"All I know about music is that not many people ever really hear it. [...] But the man who creates the music is hearing something else, is dealing with the roar rising from the void and imposing order on it as it hits the air. What is evoked in him, then, is of another order, more terrible because it has no words, and triumphant, too, for the same reason. And his triumph, when he triumphs, is ours." -Sonny's Blues
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