Gas Mileage Question

[davbell22602]

What kinda gas mileage would I get on a 72 F100 2wd, 390, automatic trany, and 8ft bed? Dont know if its 2 or 4 barrel carb.

[Ranchero50]

10 is average, loaded or not with some interstate running.

[davbell22602]

Really? I know I could go from winchester on rt7 to purcerville va and back on a quarter tank of gas in my 72 F100 360 2bbl. with a loose timing chain.

[TNIceWolf]

And that distance would be how much total for those of us who are map impaired?

[davbell22602]

And that distance would be how much total for those of us who are map impaired?

24.5 miles one way or 49 miles over and back.

[72BahamaBlue]

Best I could ever squeeze out of my stock '72 F250 360/c6 16.5 x 9.5 tires 60mph, 14.5 mpg.

[BobbyFord]

It all depends on rear end gearing

[tmcalavy]

And that distance would be how much total for those of us who are map impaired?

24.5 miles one way or 49 miles over and back.

So in that truck you traveled 49 miles on 4-5 gallons of gas...do the math, that's 10-12 mpg...right in the ballpark...about what you can expect to best you can expect.

[Montana71-F100]

I took a 1400 mile road trip when I first overhauled my 71 360 4WD. I didn't know at the time that my vacuum advance diaphragm had a hole in it so, with no vacuum advance, the best I got was just under 12 mpg. That's with points and timing set at 6 degrees BTDC. Since then I've put a new vacuum advance canister on, installed electronic ignition and set the timing at 10 degrees BTDC. I haven't taken a road trip with the new setup so I don't know if the mileage has improved.

[MaxKlinger]

There are a lot of variables that can affect your fuel economy. But 10-12 as an average is a pretty good number. Higher numbers ARE achievable. I got an honest 19mpg once with my '72. Highway running is usually 15+ mpg for me, and city driving a deplorable 7mpg.

[BobbyFord]

I get many SPG's (smiles per gallon)

[MaxKlinger]

I get many SPG's (smiles per gallon)

That's a great way to put it. I like that.

[Whateverman]

There are a lot of variables that can affect your fuel economy. But 10-12 as an average is a pretty good number. Higher numbers ARE achievable. I got an honest 19mpg once with my '72. Highway running is usually 15+ mpg for me, and city driving a deplorable 7mpg.

sounds about right
my best ever with the original 360/c6 in my truck was 17on the hwy ,with 15 being the usual hwy mileage