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Originally Posted by Frank Lee
I couldn't open that link with the zip. For the '85 I6 4-sp stick I see 19 city/24 hwy. Fueleconomy.gov doesn't show a 5-speed nor any model F150 rating 28.
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It's actually 30mpg highway for the 4spd. You just DL the zipped file and unzip it. It pulled 21/30mpg w/ a 24mpg average, and the adjusted version for 1985 was 19/24mpg w/ a 21mpg average.
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Originally Posted by EPA
F150 PICKUP 2WD 300 1M4 19 24 21 21 30 24 $ 892( 4.9L) (FFS)
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Quote:
Originally Posted by Frank Lee
The old EPA numbers ('80's) were bogus, as they were something nobody but Wayne Gjerdes and Basjoos could get. I have never heard of anyone getting anywhere near that.
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Yeah, 50mph cruises aren't common, but they are possible. Like I said before, if the truck can get ~30mpg@50mph, then w/ aeromods it should be able to get the same mileage at higher speeds, say ~60-65mph. If you don't believe the EPA's test results that's fine, but they're still there. Which is kinda odd anyway,
cuz you've posted about a diesel rabbit getting ~60mpg, even though it shouldn't because you just said it's original EPA rating of ~60mpg was bogus. That said, the EPA testing process is consistent across vehicles, even if it doesn't reflect today's driver, so assuming one vehicle can see the old EPA figures while another can't seems contradictory.
Quote:
Originally Posted by Frank Lee
All the same, I don't see a gas F150 busting through 23 without, like Dave says, going to war. I don't think 50 mph cruise will do it, I don't think gears will do it. I would be delighted if someone would prove me wrong though.
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The original FE testing already did. Now, that won't hold up on a typical highway commute of 70mph, but w/ aeromods it stands a good chance of holding up at ~60-65mph IMO.
Quote:
Originally Posted by Frank Lee
P.S. I have recorded a single 22 mpg tank (recently- no cooling fan, some other tweaks) and 2 or 3 21 mpg tanks with my 302 F150 w/3.31:1 axles... over the course of 15 years with that truck. Those were the nice long 50 mph cruises with kickin' tailwinds. Since figures like that are so few and far between and the norm is 18 or less, I consider them anomalies. Fill errors or something could have contributed too.
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I though you had a F250? And wasn't this the same truck that wouldn't take any gearing changes w/o kicking down every other second?