[BFix] Thinking outload gas mileage and EB....

[Erik Christensen]

gearing has absolutely nothing to do with mileage in a Bronco.  I've tested extensively, from 3.50 to 4.88, and the only thing that matters is your cruise speed. 50mph might get 18mpg. I never beat 17, but some claim to, although set ups vary. Mine was generally with 35" mudders, 5.5" total lift, and SEFI.various transmissions.
 
90-100mph, 10-12mpg. 
70-80 mph 13-14mpg.
55-65mpg 15-16mpg average
50-55mph I got 17mpg the one trip (full tank- hwy) I tried it.  

As far as I'm concerned, I'm going to run out of time before we run out of oil, so I drive fast :)

YMMV  :)
  ----- Original Message ----- 
  From: Jim Lemanek 
  To: mail at broncofix.com 
  Sent: Wednesday, May 07, 2008 8:21 PM
  Subject: [BFix] Thinking outload gas mileage and EB....


  Reading all that we do, it looks like someone with a 5.0 and an OD tranny like a ZF gets maybe 18 mpg.  What gears is that with?

  So if I were to keep the 3.50 gears, install a 5.0 and a ZF, any guess what I could get?

  According to gear calcs, an OD at .75 and 34" tires, at 70 mph I get 18XX rpm at 70 with 3.5 gears and 21XX rpm with 4.11.

  What do you think that would do to mpg? Stock 92 mustang 5.0.

  Just wondering thoughts.  I was gonna ask best mpg setup as an excercise but quickly realized I would get a discussion on 4bt probably.  Thats a bit outside my motivation based on my current resources.

  --Jim


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