On My 79 GMC Sierra 4x4 I run 55-60 MPH @ 1900 RPM's. Im running tiny 32 inch tires w/ the 4 speed manual tranny. I drive the highway everyday. And Im not even doing 55-60 MPH more like 47-52 MPH. Sometimes I wish i had a 4th gear in there.
Anyone else with the same setup? Just wonderin what everyone else runs.
I plan on puttin 37-40 inch tires on there in a year or two (when i can upgrade the axles) I read another post that about a similar topic that said put on bigger tires and your RPM's will go down, its true but you aint goin as fast. I often wonder what would happen if i threw on 235's.