I loved everything about my 8V92, except the fuel mileage. Lots of other people I know got good service from them too. Mine would out-pull my Dad's 3406 Cat or any 400 BC Cummins he had.

But under 4 MPG almost killed me then, and would be worse now. Then I calculated I would have saved $500 per month on fuel with a Cummins. Now?

My first truck was a Chevy Titan 90 with an 8V71. 90 injectors and 2600 RPM, row that RTO 913 like there's no tomorrow.

8V detroits self lubicate every thing thing get near. if you wan't to go broke in the least amount of time, buy it. You probably can't find a bigger money pit.

Just so you know it is a 2 cycle motor with a turbo and a blower(supercharger) with a very complicated gear train on the front. Great fuel and oil eater.

maybe he can find a nice 903

Funny you bring that up, saw the Moving on truck in the late 70's at the local KW dealer, had a 903 in it.

2 CAT dealers checked everything and couldn't find any problems. I did an oil sample and it came back clean: no metal residue. Top set done twice. I guess I'll just continue testing my oil every time I service the truck. Just in case this is something serious that CAT cannot figure out...

I have found that when a problem is difficult find or diagnose, it is usually something simple. If it were anything serious I am sure that CAT would have found it. I agree with keeping an eye on it.

I looked at the truck over the weekend and its in real good condition for being a 84. Practically the whole truck has been rebuilt from front to back including the engine and trans. I'm going to look it over again this week sometime.

What do you guys think about running that truck for about year, saving money for a down payment for a newer one with a sleeper? After all the guy will let it go for about 5-6k. :D

Have you looked on Ebay yet ??? You really would be better off to stay away from that big Detroit. If you buy it --it will be yours forever with that Detroit in it !!! You've got the right idea and your looking at a decent truck except for that motor !!!

That 92 will burn so much fuel it will bankrupt you in a year.