richmod

I'm thinking about doing Roush rear springs on my 06 GT. I've read the millions of threads and debates on the need/no-need for adj. panhard and lca's. So that got me thinking- the Shelby GT is lowered, but I have never read anywhere that it has upgraded lca's. So if the Shelby GT is lowered and still uses standard GT lca's, doesn't that pretty much mean that Ford/Shelby feel the pinion angle change is minimal and acceptable? I have no problem with the adj panhard, but I don't really want to mess with the lca's if I don't have to - I don't race, and this is my daily driver, so I don't want to increase NVH if I don't have to.

08 Bullitt 2310

Both use the same parts.

richmod

Well, to me, that seems to seal the deal - with regards to pinion angle, adj. lca's are not necessary when lowering the car by 1.5 inches or less. Anyone care to convince me otherwise?

howarmat

most people dont correct the pinion angle for spring changes, some do........they get new LCAs because the factory ones are **** and if you get a new DS, you will need to have adj then, so if you get LCAs you might as well get adj for all future mods too

richmod

So, if I'm not planning on a new driveshaft, and I'm just lowering 3/4 - 1 inch in rear to even out the wheel gap, no adj lca's needed in your opinion?

timothyrw

that's the same logic i used. shelby gt has same lca's, don't need to change mine. for me the stockers are fine.

but howarmat makes a valid point, too.

howarmat

for 3/4 to an inch no i wouldnt get them for the PA.......i would replace them for the simple fact they are weak and new ones help stop wheel hop and help put power to the ground

slvrstang2007

I have new DS and non-adj LCAs, that a bad thing?

howarmat

http://www.cherod.com/mustang/HowTo/LCA%20_adj.htm

This is a great post written by CrazyAl.....you dont have to have adj LCAs, you can also use adj UCA

Your PA might be ok for the 1 piece DS with stock suspension, in the write up you can see where you PA should be and if yours is correct......now if you do not have any vibrations up to 120 with the new DS then yours is probably ok. This is the reason more people need to change the angle, they get vibrations from the new shaft

richmod

It's good to knowI don't NEED them, but I get your point and woudn't mind getting them anyway for performance. But the NVH issue is still there for me. I know the BMR adj lca uses only one poly bushing, the other being steel if I'm not mistaken. I've read many threads where after installing these, there is more vibration, clunking, etc. Again, I wouldn't care if I were racing, but this is my daily driver. Are there any adj. lca's that use poly bushings on both ends? How is the NVH with the non-adj poly BMR lcas that use poly on both ends?