I have an 06 SD extended cab with short bed I put a 6 inch procomp lift and 35 inch pirelli tires and it drives better now than before I lifted it. I did not use any shims.

 

so heres what i bought... 4 inch pro comp front springs and u bolts, skyjacker sway bar end links, pro comp pitman drop arm, superlift adj track bar, superlift 3 inch rear block kit, pro comp es 9000 shocks, and pro comp steering stabilizer, and 16x9 moto 951s and it only cost $1300!! now do i wanna run 305 70s or 315 75s thinkin about fierce attitude mts...?

 

Pulled the trigger on a 4" BDS front and rear leaf (no blocks) 35/12.5/20 Toyo MT on ProComp Xtreme Alloys
I am extremely pleased with the outcome. Im glad I did not go higher.

 

Great! Please post some pics!
set up your gallery!!

 

real nice truck bruce! im definitely a fan of white.

 

Thanks...as you can see, big difference before 33/12.5/18 no lift vs. 35/12.5/20 w/ 4 inch lift

 

Hey all...quick question, i have a 04 250 crew cab that im runnin 37x13.50 with a pro comp 6.5 lift. I keep going back and forth on what gears im gonna go to. 4.10s or 4.56? The truck is my daily driver so Im trying to get the power back that ive lost as well as gas mileage. so what do yall think?

 

You can use the RPM Calculator (link) below to determine which gears you need. Depending on the transmission you have in the truck, the "Transmission High Gear Ratio" is as follows:

6-Speed Manual - .72
4R100 Automatic - .71
Torqshift Automatic - .71

RPM Calculator

 

this is what i think seems to work out fairly well, for every inch in diameter u add go .10 lower in gear ratio. ex if u have 31 inch tires stock with 3.73 ratio and u go to 35 inch tires to get rpms close u would go with say 4.10 gears. if anyone doesnt think this is fairly accurate let me know

 

That method works too!

 

im dying to know what rims are on the 04 white f250 on the top of the two!!!