Local East Texas Craigslist ad.
Or at least I think this one is fibbing. I hear a good built transmission helps with MPG.

I'm laughing at the claim, but I have been wrong in the past.

 

Yeah doubt the 31 mpg....but not impossible I guess? Would have to be the perfect conditions though....hwy driving, temps, and combination of tires, and drive train components.

 

and a tail wind.

 

Slight downhill grade. "No boost whatsoever. This thing ain't hardly workin'!"

 

i rather doubt it too , however one of my old mags . called rust bucket i think, they claimed 28 mpg when they were all done. , fairly high horsepower as i recall ...idk

 

A GearVendors had A LOT to do with that.

 

Yeah the white 89 in Diesel power.

 

What's the big deal ?

31MPG ? Hell, that's easy. Just put the truck up on jack stands, start it up, and put it in drive. I bet you get a lot better MPG than that !!!!

 

I'm building this little half ton '03 regular cab short bed right now with a 12v/a518. should be about 700 lbs lighter than a D250 and much better aerodynamically. with some light mods, fresh injectors, advanced timing, electric fan, good tires, and good fluids, my goal is 25 mpg highway. which after talking to another gent who has done a similar swap, is a moderate goal.

now in a 1st gen DRW truck. nope. heck, i'm tickled pink to get over 18mpg in my W250.

 

Yeah the white 89 in Diesel power.

 

But I don't have Drive?

 

Maybe he's using UK mpg.. 26 US MPG = 31 UK MPG

 

I'm building this little half ton '03 regular cab short bed right now with a 12v/a518. should be about 700 lbs lighter than a D250 and much better aerodynamically. with some light mods, fresh injectors, advanced timing, electric fan, good tires, and good fluids, my goal is 25 mpg highway. which after talking to another gent who has done a similar swap, is a moderate goal.

now in a 1st gen DRW truck. nope. heck, i'm tickled pink to get over 18mpg in my W250.
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'93 W250 Getrag, 3.54, 33", HE351cw, 4" exhaust, THD pin, LP piston pump, 366 gsk, 60# springs, Powerstroke IC w/ 3" tubes, 24v intake, hydro-boost. Slow and Ugly.

IN PROGRESS - '03 1500 RCSB 12v/a518. H1C/12cm, 366 gsk, Non-IC, pump tune

"Sir, what about all of those loose rounds on the deck?"
"Combat rounds son! YUUUT"Is that 12cm housing not going to run warm or is that 03 a non tow vehicle? still trying to understand it all

 

i had the same turbo on my '93 before the he351cw swap and it actually ran about 100* cooler on the highway than the stock H1C/18.5cm housing did. spools really nicely as well.

but you are correct in assuming that it is better suited in a lighter, non-towing vehicle, which this '03 will be. most it will ever haul is a motorcycle trailer or flat towing my jeep.

 

The 3.07 gears, street tires aired up to 70 PSI and a lock up 47 RH transmission where a key part of the MPG puzzle as well.