I installed Pro Comp's 6 inch kit on my F-150. It came with 2 add-a-leafs for both sides. This did stiffen the ride a little bit, but it isn't very noticable and from what I have learned over the years you will need a little extra spring rate to help control heavier tires. If I were using run of the mill 35x12.5 radial whatevers this would be a little to stiff, but my Swamper SXs (36x12.5) are a good match to the rear suspension due to the SXs weight. Some companies do make 6 inch blocks, but when you use blocks at all you will have more axle wrap since blocks act like a lever on the axle. Hope this helps. Laters.

NUFF SAID

 

Less blocks and longer rear shackle??

 

Longer shackles on a ford will drop your truck, not raise it. The shackles are upside down compare to a jeep or whatever. Off Road Design has a shackle flip kit which essentially points the shakle down instead of up and gives you about six inches of lift in the process. This would be perfect as you wouldn't need any blocks at all for a six inch lift. You can also make your own flip kit by cutting out below the shackle on the hanger and flipping the shackles from side to side and then pointing them at the ground. You will have to brace the cut hanger bracket properly or you will experience some serious problems when you break it.

Don't do this if you cannot weld or have access to a welder!!! Buy the kit instead

Hey Ya`ll, watch this!! (famous last words)/wwwthreads_images/icons/cool.gif

 

Thanks guys. This gives me a number of options. I am running 35x12.5 genrals on my truck now so the tire is on the lighter side of things. I will have to ask around about the shackle flip kit. Also no one said any thing about using new leafsprings all together. I am guessing that this is because this option is not worth my while. Please advise.

Beat that sucker into submission!

 

If you want spend the money on the new springs then this is actually the best option since it requires only changing the springs and you can order springs in a number of rates from different manufacurers. A major spring maker like National Spring Co. will be able to build a spring for your vehicle based on it's weight and what you will be doing with it. The reason no one metioned this is probably due to the price-about $3-400 with one of the lift companies and even more with National. A lift with out blocks will also have less axle wrap. Good luck.

NUFF SAID