That's nuts, I managed to get 22 mpg in my old 79 Cordoba back in the day. I was also making about 450 hp as well. Having 3.73's didn't hurt either.

 

Ummm 6.7 now

 

i get 14 mpg city, and no joke 17-18 highway, she has 200800 miles....runs perfect


my oil psi is very high now as well...the needle is past the 0 in 40

 

i seen yous all joing around couldnt resist, im getting an average of 8.4mpg ALL the time lmao

 

I'm suprised I haven't joined this club already. 1997 5.9 Sport.

 

hey all, have a question here. I have a 94 2500 that is pretty much a yard truck but I do put some highway miles on it. I was on the highway the other day and the truck started surging/sputtering until I got it down under 40-45mph - hard to tell since my speedo doesn't work.
I put the truck in neutral and gun the engine and it seems fine. Put it in 1st, 2nd, or drive and once I get over 2K rpm it starts to surge/sputter again. Don't think it's the tranny but I could be wrong...

Clogged cat? speed sensor? tps? fuel filter?

 

sounds like speed sensor to me

 

One day I hope to be in the same boat as you

 

It really is a nice boat

 

97r/tram #64 welcome to the club