Originally posted by Jed:
Will,
Not knowing what kind of gearing you have in the rear-end or tranny, it would be kind of hard to guesstimate what kind of mileage you should expect.
I can tell you my trucks, one 235, one 216, and one 250 I-6's, all with original 4 spds, and 4:11 rear ends will barely see 10 mpg on a good day.
Jed,
I have the 3 speed on the column with the Eaton rear axle, I have no idea what the gear ratio is, something pretty low though, that old truck will climb a tree and pull down a house with little effort. Thanks, -Will