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Old 09-16-2013, 02:07 PM   #151 (permalink)
Join Date: Oct 2009
Location: Fort Worth, Texas
Posts: 2,442

2004 CTD - '04 DODGE RAM 2500 SLT
Team Cummins
90 day: 19.36 mpg (US)
Thanks: 1,422
Thanked 733 Times in 554 Posts
Thus far I haven't read of anybody here who's trying to measure mileage based on pulling 20,000 down the highway on a gooseneck trailer............. Everybody is measuring mileage hauling their solitary butt down the highway!

Yes . . MPG figures around here are mainly a stunt. Lets max out that Honda CIvic to approved weight limits and then see how numbers work out (ton-mile a better approximation).

It's the subject for another thread, but there are a handful of us around who have an interest in "working" the truck. My truck is part of a dedicated combination (with 35' travel trailer) and I know of a couple of other men with the same basic config who I hope will add their experience.

There are plenty who have an interest commercially (hotshot, LTL) using pickups, but few do any mods as the useful life of the truck plus IRS rules pretty much cover what can/cannot be done.

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Old 12-19-2015, 02:18 PM   #152 (permalink)
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Join Date: Jul 2011
Location: NewMexico (USA)
Posts: 9,030

Sub - '84 Chevy Diesel Suburban C10
90 day: 19.5 mpg (US)

camaro - '85 Chevy Camaro Z28

Riot - '03 Kia Rio POS
Team Hyundai
90 day: 30.21 mpg (US)

Bug - '01 VW Beetle GLSturbo
90 day: 26.43 mpg (US)

Sub2500 - '86 GMC Suburban C2500
90 day: 11.95 mpg (US)

Snow flake - '11 Nissan Leaf SL
90 day: 141.63 mpg (US)
Thanks: 215
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Just to update the last fill up I was getting between 19 and 20 mpg on the highway while it was well below freezing with the suburban loaded up with tools towing my 4x8 trailer with even more stuff on it.
That is when the torque converter lock up let go.

The setup was HE351VE being force fed by an even larger T76 with one intercooler.
In my next round of upgrades I actually want to "intercool" the air as it passes from the discharge of the T76 to the inlet of the holset. Then "aftercool" the air again when it leaves the Holset before it goes into the engine.

1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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