TRCM
NAXJA Forum User
- Location
- Newport News,VA
I did some searching, but what I need to know from those who run it, is what SHOULD my rpm be with 31's and 3.55 gears (88 vintage AW4) going down the road @ 60 mph.
I'm trying to figure out a potential trans issue, and I can't remember what the rpm were. Looking at the various tire size vs rpm charts, even accounting for OD, the rpm they show are higher than what I remember (this truck is only used seasonally, so it's been almost a year since I drove it a much).
I'm almost starting to think my OD isn't working any more, among other things. This might explain my drastic loss of mpg.
I'm trying to figure out a potential trans issue, and I can't remember what the rpm were. Looking at the various tire size vs rpm charts, even accounting for OD, the rpm they show are higher than what I remember (this truck is only used seasonally, so it's been almost a year since I drove it a much).
I'm almost starting to think my OD isn't working any more, among other things. This might explain my drastic loss of mpg.