Len.Barron
Observer
The second overdrive on the allison definitely helps on the hwy..
Those are very decent numbers!
Not much better than my 2001 8.1 Litre Gas 4WD Quigley 3500 Express van.
It gets 12.5 - 13.5 MPG all the time trailer or no trailer!
highway or city?
Most that get one don't ever sell it...that combined with the low production numbers make them tough to find (and was a big part of why I built mine).
.I've seen several gas GMC van overlanders but have not seen any with diesels.
I’m glad to hear the Duramax is working out for all of you.
A good friend worked for a tow company... he told me the Duramax they had kept blowing head gaskets. He had a low opinion of the Duramax. 6.0 Fords were even worse.... in contrast the 7.3 truck’s hour meter had been pinned at 99,999 hours for years, and it just wouldn’t die.
Great looking rig. Who did the 4x4 conversion on it?
the 6.5 motors weren’t Duramax, they were pre the founding of the GM Isuzu partnership. It was either a GM in house or a Detroit Diesel, can’t remember.