Engine Modifications??

[BIGASSZ71]

I have also got a K&N but i am looking into a programmer. Is ther anything else I need to do to turn 39'' tires besides gears?

[snoman]

I have also got a K&N but i am looking into a programmer. Is ther anything else I need to do to turn 39'' tires besides gears?

Gears, Gears, Gears!!!! Try about 5.13.

[Rookie]

I would think about upgrading axels.

[txpkup]

gear that puppy up and enjoy your 9-10" FLIGHT! And don't forget to share the love with some pics

[snoman]

I would think about upgrading axels.

Yes, most definately if it is a 1/2 ton. 39's are well beyond stock axle capacity especailly if lockers are used. A 14 bolt 9.5" semifloater axle for rear would be the minimum I would recommand for that tire size. They can be found with 6 lug hubs that would make transplant easier. In the 14 bolts, 9.5" tops out at 4.88 and the 10.5" tops out at 5.13 but does not come with 6 lug hubs. To go beyond 5.13 you will need to switch to dana axles.