Gears...

[Smokin_GMC]

I been thinkin about it and i'm pretty much gonna go through with it anyways but, how much with swappin to some 4.10s from 3.42s cut my gas mileage??

[banker099]

how much u drive on the hwy?

i went from 3.42 to 3.90 and it wasnt much of a difference in mpg

but gets off the line much better now

[ff_jeff]

You should not see a big difference. Some say you get a little better MPG because engine is in a better spot on the powerband. I wouldnt worry about it much though.

[Smokin_GMC]

run it every day. 34 miles to work and 34 miles back home. i'll prolly get a one of those hydrogen kits in the near future anyways. maybe that'll bump it back up if i lose very much

[Smokin_GMC]

motive or richmond gears?? what do you suggest?

[ff_jeff]

I suggest Rons machine service... here---> eBay Motors: GM 8.6 CHEVY 10 BOLT 4.11 RING AND PINION INSTALL PKG (item 330263169396 end time Oct-17-08 05:58:54 PDT)
Comes with install kit, or look at his other auctions for just the gears for $119

[Slimsilverado]

thats really cheap i would be a lil concerned where they are made at. Might be Chinese knock off there Jeff. Both Richmond and Motive make great gears that will last forever

[yellowdemon327]

i had 3.42's and went to 4.10's. love the extra torque, but wrecked my gas mileage.

[ff_jeff]

They are made there in house I believe. Allot of people have used rons. I havent heard anything bad about them yet.

[Show&Go]

I run a 4.10 in mine and i am averagein over 20 mpg running between 75 and 80.