Fuel Economy

[nubuilder]

Actually, the bigger tires didn't affect my mileage at all
They're not THAT much bigger... Stock tires are 28.9" diameter, these ones are 29.5"
I blame two bad o2 sensors

Did you order that TPS yet?

No... Gotta wait until the next paycheque

Dennis, do you guys have AutoZone? If so, its $40+tax there (that's where I got mine). Otherwise, I've found some cheap parts on AutoPartsWarehouse.com. Got a IAC for $17; $60 at AutoZone.

O2 sensors are $39 on Amazon (I had to check for my truck so yours might be different).

Two bad O2 sensors could definitely cause that .

 

[drperry]

Actually, the bigger tires didn't affect my mileage at all
They're not THAT much bigger... Stock tires are 28.9" diameter, these ones are 29.5"
I blame two bad o2 sensors

Did you order that TPS yet?

No... Gotta wait until the next paycheque

Dennis, do you guys have AutoZone? If so, its $40+tax there (that's where I got mine). Otherwise, I've found some cheap parts on AutoPartsWarehouse.com. Got a IAC for $17; $60 at AutoZone.

O2 sensors are $39 on Amazon (I had to check for my truck so yours might be different).

Two bad O2 sensors could definitely cause that .

Amazon.com does not ship to Canada, and Amazon.ca only carries media and limited electronics...

My shopping cart at RockAuto is like $270 with shipping... ACDelco o2 sensors, cap, rotor, 6 spark plugs, and a TPS

 

[nubuilder]

My shopping cart at RockAuto is like $270 with shipping... ACDelco o2 sensors, cap, rotor, 6 spark plugs, and a TPS

I've looked at their site, but never ordered from them. Someday I'll have a HUGE order for them when all the fun begins .

 

[Zembonez]

I'm happy with anything over 15 in a V8 truck. I figure any more is just a bonus since I tend to lean on the go pedal quite a bit.

 

[gmctrucks]

I got 16.3 on my 93 F/S Ext/Cab 5.7 with 3.42 gears going around 67-72 mph im hoping it doesn't get worse now with my 3.73 gears that were installed today with my Auburn posi rearend.

 

[PenguinLTZ]

I got 16.3 on my 93 F/S Ext/Cab 5.7 with 3.42 gears going around 67-72 mph im hoping it doesn't get worse now with my 3.73 gears that were installed today with my Auburn posi rearend.

It will drop a bit at 67-72 mph. It's a math thing.

 

[drperry]

I got 16.3 on my 93 F/S Ext/Cab 5.7 with 3.42 gears going around 67-72 mph im hoping it doesn't get worse now with my 3.73 gears that were installed today with my Auburn posi rearend.

It will drop a bit at 67-72 mph. It's a math thing.

There may be a slight increase in city mileage, however

Provided you can keep your foot out of the throttle...

 

[Mixedbreed]

13 in the new truck.. lots of foot though, should level out in a year or 2..

 

[Darkanion]

13 in the new truck.. lots of foot though, should level out in a year or 2..

Isn't that about when you're set to retire? You think you might actually slow down then?? I wouldn't bet on it...

 

[gmctrucks]

I got 16.3 on my 93 F/S Ext/Cab 5.7 with 3.42 gears going around 67-72 mph im hoping it doesn't get worse now with my 3.73 gears that were installed today with my Auburn posi rearend.

It will drop a bit at 67-72 mph. It's a math thing.

There may be a slight increase in city mileage, however

Provided you can keep your foot out of the throttle...

Don't know how it happened but I got 18 on the way back and I was going faster. Maybe the other tire helped push it easier. LOL No for real guys it did do better and I know the math is correct.