im at roughly at 2100 at 70 with 3.73

 

i couldnt remember mine exactly so i just went for a drve.
60mph 15rpms
70 19
80 2k

thats pretty good. i think i have the 3.42s, my tire is 285/60/18 according to a tire calculator thats 31.46

but its time to quit takeing a dump of the line

 

33" Tires, 3.42 Gears, 4L60E, about 2k RPMS at 83 or so

 

im around 2200 with 4.10 gears and 295/40/20 29 inch tire

 

2000 rpm @ 70 with 4L60E, 3.73, 265/75-16

1900 rpm everything the same except 6L80E

 

I'm around 2100 - 2200 at 75mph w/ 3.73s. I average just under 17mpg, mostly around 16 but as high as 17.5 taking it easy.

 

275/60/16 - (TT3000 stall) 4l60E - 3.42s- 68mph was 2000rpms 14.5 town/ 21 interstate (70mph)/ 24 highway (60)
275/60/16 - (Stock TC) 4l80E - 3.42s- 71mph is 2000rpms 15.5-16ish town/ 21 interstate / 24 highway

Still gets bout the same gas mileage except in town

 

Factory 4.10's, 285's and just a smiggin over 2,000rpm

 

With the 265's it was around 2,200rpm

 

4.56s 30inch tire around 2600? at 70, pretty sure have to double check tomrow dont get on the highway much.