Which is better from a performance standpoint? I don't want to rip my leaf springs out because of some crappy shackles, and I don't want to pay 1500 dollars for the roush kit if I don't have to. I have a good amount of horse power on my truck, and I go to the track. I want a 2 and 4 inch drop but I will settle for a 2 and 3. No flip kits for me. The kit I am looking at now is the groundforce 2 and 4 complete kit for about 700 dollars. I have two issues with it. It uses shackles, and it comes with a new carrier bearing for the drive shaft. Since I wont have the stock drive shaft at the end of this week, I'm pretty sure the carrier bearing wont work for me or be strong enough for my application. Is a new carrier bearing required for that big of a drop? Does it mess up the geometry of the drive shaft that badly? I'm pretty lost having never lowered a vehicle before, but my truck just sits way too high. Any input would be greatly appreciated. Any body have any kits to recommend?

 

the carrier bearing (and CB relocation kit) is only for 2 piece driveshafts. Sounds like you are upgrading to a stronger one piece, so you shouldn't need the carrier bearing kit stuff anyways.

Leafs will give you a better ride. but shackles are much cheaper. The shackles will lower your payload more then the leafs will, so that is something to consider if you ever haul stuff with your truck.

Glad you dont want a flip kit because they encourage wheel hop in higher HP applications.


Let me know if you have any other questions.

 

Thanks pat. The big issue is I have to have a two piece. Truck is too long for a one piece or so I've been told. I just ordered a new one from www.thrashshafts.com.

As to the payload, not really concerned with that. The biggest thing I haul is a cooler of beer for me and a cooler of ice for my truck when I go to the track ( I drink the beer after I'm done running )

I don't know if I should be, but I'm worried that shackles might be too weak for me and snap or break during launches. I want to do this right, no ghetto or hillbilly tricks to accomplish the goal.

Do you think I could use the roush leafs with a ground force kit? Piece them together?

 

yea you can mix an match. I had Eibach coils/hangers and ground force shackles on my silver 03.

The shackles will be strong, but probably will be too soft for hard launches.

why not set up a 3 or 4 link for the rear?

 

your speaking chinese to me man. This is my first in depth build on any vehicle I have owned. Nothing but your most common bolts ons on my other vehicles. Whats a 3 or 4 link suspension?

 

basically eliminates the leaf springs, offers a more controlled suspension for launches




Probably more work then you are looking to do if you want just a simple bolt on mod, so forget i mentioned it

 

You mean like IRS like on the 03-04 cobras?
Knowledge is power

 

technically wouldn't be IRS tho because you would still have a solid axle

 

Doh! lol I knew that. Ya, I think a 3 link would be too much $$ and effort right now. Guess I'm going to piece together a kit.

 

like i said piecing together is no problem, get the best of both worlds from different kits.

And btw ive heard really good reviews about the Eibach Pro Dampener shocks

do you have any drag radials yet? Do you have traction bars?

 

My GF 2/4 drop (9949) is coil springs and leafs, no lowering shackles. I don't know of a GF 2/4 kit that uses lowering shackles.

I'm running the Eibach pro damper kit with the GF 2/4 and it is perfect.

 

http://www.andysautosport.com/ford/2.../ground_force/

That's what I'm looking at.

I don't have drag radials yet, or traction bars. My power train is done for now, so I'm working on the suspension before I mangle something else.

 

That's a list, which one are you looking at? Those are good prices.

 

The 2 -4 drops.

9944
9949

maybe even the 2-3 drop if i'm going to use the roush leaf springs. Any suggestions with mixing and matching?

 

The ground force 9949 and 9944 are coil/leaf drops, no shackles.