What kind of mileage do you get?

[Bearcat91]

I think non vortec or obd2 you have to change some speedo gear to an appropriate ratio...
http://www.transmissioncenter.net/speedometer_calibration_______va.htm

 

[gmcyukondriver]

Depends on how I drive. City is usually 13, highway is around 15 or 16. If I'm driving a lot, I'm a little easier on the gas and get better mileage. If I've been taking the bus and riding my bike, like I have been recently, then I'm a little less worried about mileage.

That being said, I have no idea what my rear gear ratio is, it was replaced a while back, and I don't know if they put in 3.73s or 4.11s.

 

[oohunter04oo]

You know, my bigger tires didn't make it read slower. I put my GPS in there for it to read and the speed matches up. Never had it adjusted either.

Anyhow, if I drive 60-65 MPH I'll get around 16MPG.

Coworker of mine just bought a new dodge and he was asking him about lifts and the salesman told him If he put 35's on the truck the computer automatically knows and adjust the speedometer. So I started laughing when he told me this my coworker actually believed him. So I'm guessing on a 2012 dodge the speedo works on GPS. Lol.


Anyways I get 15.5-16 in my 97 b4 lift. I haven't Recalibrated my speedo after the gear and tire change but my speedo is 3mph slower now.

 

[chevyman0191]

I get mostly 11-12 but its mostly back roads stop and go and curves. A trip to the beach on straight highway i can get up to 15.

edit: but i do tend to have a hot foot at times haha

 

[DonYukon]

i never really cared about this but now its got me wondering , how do i go about recal my speedo with 35s?

 

[Wildbill0088]

Without a cat, the mods to the air cleaner/tbi spacer and some throttle foot control I manage 14-15mpg around town no highway numbers yet.

 

[jdyates]

Forgot to mention my trans has OD and I get amazing mileage when I use cruise on the expressway or on a very very long road. I can drive to my grandmothers house and back and hardly burn any gas. Don't know how far it is, but its Weslaco, TX to Elsa, TX.

 

[Wildbill0088]

The most amazing mileage I have seen was from my 93 W/T 1500 2WD with the 4.3 and 5 speed. That truck averaged me 18 mpg around town and over 20 on the highway. Not sure what gears would be in it but they worked.

 

[97PROSHOZ71]

Coworker of mine just bought a new dodge and he was asking him about lifts and the salesman told him If he put 35's on the truck the computer automatically knows and adjust the speedometer. So I started laughing when he told me this my coworker actually believed him. So I'm guessing on a 2012 dodge the speedo works on GPS. Lol.


Anyways I get 15.5-16 in my 97 b4 lift. I haven't Recalibrated my speedo after the gear and tire change but my speedo is 3mph slower now.

LOL. I guess they are. I've also tested it by driving with another vehicle, last time was Mom in her Mustang and we matched up perfectly.

 

[97PROSHOZ71]

I think non vortec or obd2 you have to change some speedo gear to an appropriate ratio...
http://www.transmissioncenter.net/speedometer_calibration_______va.htm

Must be the Non Vortec and OBD2 trucks, mine never has had a problem keeping the right speed.