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Old 01-25-2020, 12:11 PM   #1080 (permalink)
gumby79
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Join Date: Dec 2014
Location: Butte, Montana
Posts: 725

little jona - '91 Dodge D 250 first gen cummins LE
Team Streamliner
90 day: 23.4 mpg (US)

Little Jona airo modded - '91 Dodge RAM 3/4 TON D 250 2×4 AUTO
Pickups
Team Cummins
90 day: 18.5 mpg (US)

The Salted Hound Jenny. - '87 Dodge Ram 50/D-50 5sp 4X4
90 day: 20.24 mpg (US)

Jona Allison aero - '91 Dodge Ram D-250 Le
90 day: 20.76 mpg (US)
Thanks: 208
Thanked 427 Times in 278 Posts
Quite impressive on the math. 1350lbs is definitely worth 12mpg.
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Regear
Re gearing/trans swap had a 16mph effect on top speed. 87.14mph with 2.44:1 final Vs. 103 with 2.16:1 new top gear.
@2350 the defueling matches the load. And will not accelerate past 103 over a 10mi test at WOT.
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Quote:
Originally Posted by wyatt View Post
I went 70 with mine routinely. 12 inch tires rated for 55.
It more of a legal thing many states have a 55 for 3axels OR towing.
Dark Aero beats the when towing but falls on its face on the 3 axel part ,unless the 3rd is off the ground 55 is the limmit.
ID, MT, UT, NV, AZ, NM, CO, WY, and KS over 55, some up to 85mph, is allowed when towing . Im shure there are others but I haven't been there, or don't recall.

Dreem Big Chisel Down To Reality
__________________
1st gen cummins 91.5 dodge d250 ,HX35W/12/6 QSV
ehxsost manafulld wrap, Aero Tonto
best tank: distance 649gps mi 24.04 mpg 27.011usg
Best mpg : 31.32mpg 100mi 3.193 USG 5/2/20


Former
'83 GMC S-15 Jimmy 2door 2wd O/D auto 3.73R&P
'79 Chevy K20 4X4 350ci 400hp msd custom th400 /np205. 7.5-new 14mpg modded befor modding was a thing
87' Hyundai Excel
83 ranger w/87 2.9 L FI2wd auto 18mpg on the floor
04 Mitsubishi Gallant 2.4L auto 26mpg
06 Subaru Forrester XT(WRX PACKAGE) MT AWD Turbocharged 18 plying dirty best of 26mpg@70mph
95Chevy Blazer 4x4 auto 14-18mpg
04 Chevy Blazer 4x4 auto 16-22mpg


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