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Between 15 and 19 MPG.


I had an '86 with 307 4bbl....still computer controlled. Running a TH350 and 2:29 gears it averaged 26 MPG at 70-75 from Flagstaff, AZ to St. Louis, MO. Depends on state of engine, gears, tranny, how you drive it, etc.

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14y ago
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