Hi all,
Im new to this forum but I have been reading with great interest for a long time and cant help but notice that there is a lot of knowledge in this forum. However, I have read up and down virtually all posts on the UCA upgrade for a long time, and Im struggling to find a conclusion. I read praises of the BMR "ultimate" UCA with spherical joints, I have read that the 11+ longer arm design is for sure the way forward, and that the differential end bushing is to weak and needs an upgrade.
So today I figured Ill add the BMR spherical arm and the diff poly bushings in my basket over at Lethal performance, and in a final search to justify my purchase I stumbled across one of the best threads ever, the project budget 400whp thread... Man.. Now all of the sudden the Roush SHORT 07-10 arm is the way to go and its backed by the a racecar driver. So is that the final answer? Is there no point to use a 11+ longer arm that I thought stabilised the rear end as claimed by.. Well BMR who makes money selling them?
Any help here would be greatly appreciated.
Ill add in a little background information and the problem at hand:
2007 GT500 super snake 660hp
Shelby Eibach suspension system including adjustable panhard bar
Ford Racing 1 pc driveshaft with unknown and potentially incorrect pinion angle
SVE 10" wheels with 275 tires front SVE 11" 295 tires rear
Problem: The car was very unstable in the rear end when I got it. It served little to no confidence, and the rear end was "wobbeling", trailing, just terrible. Pushing it was scary and not fun at all.
Mods:
Ford racing (boss302) LCA and BMR relocation brackets - Top mounting hole is used
Result: Rear end way better, steady state long sweepers etc is now much improved. Still some instability, especially when braking, and bumpy roads when turning, dynamic stuff like right left turns and trailbraking..
I suspect the UCA is causing my problems, but I could be wrong. Ideas anyone?
Im new to this forum but I have been reading with great interest for a long time and cant help but notice that there is a lot of knowledge in this forum. However, I have read up and down virtually all posts on the UCA upgrade for a long time, and Im struggling to find a conclusion. I read praises of the BMR "ultimate" UCA with spherical joints, I have read that the 11+ longer arm design is for sure the way forward, and that the differential end bushing is to weak and needs an upgrade.
So today I figured Ill add the BMR spherical arm and the diff poly bushings in my basket over at Lethal performance, and in a final search to justify my purchase I stumbled across one of the best threads ever, the project budget 400whp thread... Man.. Now all of the sudden the Roush SHORT 07-10 arm is the way to go and its backed by the a racecar driver. So is that the final answer? Is there no point to use a 11+ longer arm that I thought stabilised the rear end as claimed by.. Well BMR who makes money selling them?
Any help here would be greatly appreciated.
Ill add in a little background information and the problem at hand:
2007 GT500 super snake 660hp
Shelby Eibach suspension system including adjustable panhard bar
Ford Racing 1 pc driveshaft with unknown and potentially incorrect pinion angle
SVE 10" wheels with 275 tires front SVE 11" 295 tires rear
Problem: The car was very unstable in the rear end when I got it. It served little to no confidence, and the rear end was "wobbeling", trailing, just terrible. Pushing it was scary and not fun at all.
Mods:
Ford racing (boss302) LCA and BMR relocation brackets - Top mounting hole is used
Result: Rear end way better, steady state long sweepers etc is now much improved. Still some instability, especially when braking, and bumpy roads when turning, dynamic stuff like right left turns and trailbraking..
I suspect the UCA is causing my problems, but I could be wrong. Ideas anyone?