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Old 10-31-2011, 08:27 AM   #1
Ozark Tim
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my blue 71 beater gets 16+ mpg

I find myself with a new 72 beater every few years (it's a virus I think)
This year I bought a 71 Custom 10 with a 307 V8, 3-spd manual with optional 3:07 diff and only a few minor options. I guess the optional 3:07 diff really helps on the mileage.
I drove it to the farm 2 weeks ago and brought a different truck home and then brought it back this weekend.
I averaged 62-67 mph and got over 16 mpg on it. I have made the trip back and forth since 1975 so I know the miles and didnt do the wrong math. I guess I am used to my 11-12 mpg 350's.
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Old 10-31-2011, 09:21 AM   #2
dan42
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Re: my blue 71 beater gets 16+ mpg

Sounds like it's great on the highway. Probably not as good around town, but still, 16 mpg is pretty impressive for one of these old trucks.
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Old 10-31-2011, 10:14 AM   #3
domeier
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Re: my blue 71 beater gets 16+ mpg

The difference between 11 and 16 mpg didn't mean too much in 1973, but it sure as hell means something today:

500 mile trip in 1973, $.50/gal
11 mpg = $22.73
16 mpg = $15.63
difference = $7.10

500 mile trip in 2011, $3.79/gal
11 mpg = $172.26
16 mpg = $118.44
difference = $53.82

Hell, $53.82 is almost enough money to get you a down payment on a tire...
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Old 10-31-2011, 12:17 PM   #4
Bears63
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Re: my blue 71 beater gets 16+ mpg

That gear ratio helps a lot. My '71 is rather low geared, I tach 2700 rpm @ 60 mph. If I go 65 (3000 rpm) I get a little over 11 mpg, but driving at 60 I get just a hair over 14 mpg. Dropping the rpm's is a big step in mileage.
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Old 10-31-2011, 12:33 PM   #5
Ozark Tim
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Re: my blue 71 beater gets 16+ mpg

Whatever the case. I LIKE IT.
I wont even mention I fought a headwind when I took it down and a crosswind on the way back. Maybe it gets better in the right conditions???
I dont think my old 250 six sticks got much more than 15 through all the years I had those for beaters.
I guess I got a good'n.
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Old 10-31-2011, 01:40 PM   #6
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Re: my blue 71 beater gets 16+ mpg

My first vehicle was a 71 swb with 307/th350, and it got 16-17 highway before I started messing it up with "performance" parts. I wish I had that truck today. It was so nice.
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Old 10-31-2011, 01:56 PM   #7
Ozark Tim
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Re: my blue 71 beater gets 16+ mpg

been there and done that with a 67 CST/10 with a 283 30 years ago. Oh well, were smarter than that now...LOL!
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Old 10-31-2011, 05:33 PM   #8
72BlckButy
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Re: my blue 71 beater gets 16+ mpg

That's awesome Tim.

What all does your fleet consist of these days? You were selling right and left there for a while.
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Old 10-31-2011, 05:34 PM   #9
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Re: my blue 71 beater gets 16+ mpg

Quote:
Originally Posted by dan42 View Post
Sounds like it's great on the highway. Probably not as good around town, but still, 16 mpg is pretty impressive for one of these old trucks.
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Old 10-31-2011, 09:29 PM   #10
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Re: my blue 71 beater gets 16+ mpg

Nice, it's nice to see a 307 for a change.
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Old 11-01-2011, 06:23 AM   #11
special-K
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Re: my blue 71 beater gets 16+ mpg

Sounds like you have a great little shuttle craft there. I've always stood up for the 307. Sure a 350 gives more power,but that thrifty little engine that could is one efficient little mill and'll get you down the road just fine without a whole epidemic of technology.
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Old 11-01-2011, 10:18 PM   #12
red71cheyenne
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Re: my blue 71 beater gets 16+ mpg

Looks like its in real nice shape for a beater! Wish I could get 16 in one of mine. Maybe I should do a 307 in my next project.

Congrats!
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Old 11-02-2011, 12:35 AM   #13
SS Tim
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Re: my blue 71 beater gets 16+ mpg

My '72 bb Suburban would get a consistent 17mpg freeway on 3.07s. In town it was a whole different matter. The gas guage would turn almost as fast as the tach. But then leaded premium and lots of timing helped.
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