Thread: Cd or weight?
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Old 11-06-2020, 02:19 PM   #39 (permalink)
aerohead
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same era pickup

My grandfather's '62 Dodge D-100, with the 225-CID slant-six,( a decade early ) with 3-spd 1:1 trans, and 4:56 rear diff was good for 50-mph, and 11-mpg.
A nearly- perfect bolt-in of a 1977 Dodge D-100 4-spd OD, and 3:50 rear axle allowed for 16-mpg at 60-mph.
Some streamlining pushed it to 21.5 mpg at 60 mph, and 91-mph indicated top speed.
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