First long trip with 4.10's...MPG impressions

[USMCmarauder]

So I took my first long trip with my new PI 3500 converter and 4.10's. I have had them for about four months, but most of my driving is around town, where my MPG basically blows...15 MPG. I averaged 21.5 MPG for a 600 mile trip from San Diego to Vegas and back. This was spinning 75-80 MPH most of the way. I was hoping for 17-18 at best and was pleasantly surprised. It would've been a cheap trip except gas is $3.70 for premium along that stretch of I-15.

[Pops]

I just got back from the Kentucky meet and got 19.4 MPG with the GM and 4.10 gears. Not that bad.

[RF Overlord]

John, for the sake of clarity, folks should know that you have a MM 4V motor in your GM. If you had the 2V motor, I bet your mileage with 4.10s wouldn't be quite as good.

[fastblackmerc]

Last Friday on my ride home from Atlanta after getting my grand exhaust work completed I got 23.4mpg at 8-9miles over the speed limit.... I did hit 100+ a few times when some cars wanted to play :D . With the stock exhaust in place I could only get 19.x mpg traveling the same distance and conditions.