Do the torque arm and LCAs push up or towards the front?
03-05-2005, 11:59 AM
#1
Do the torque arm and LCAs push up or towards the front? Do the torque arm and LCAs push upwards or towards the front of the car on a hard launch? How much of the lifting action is applied by the torque arm versus the LCAs? In laymans terms, how does the f-body suspension work (at the dragstrip)?
Shawn
Shawn
03-05-2005, 02:10 PM
#2
Based on the assumption that you're talking OEM stock components:
The torque arm,because of its length,just keeps the rearend housing from rotating.If it was shorter and attached to the frame/body just forward of the rearend(as on the Buick GNX),it would have a lifting action against the frame/body,thereby having a pushing down action for the rearend and tires.
The LCAs push forward.Unfortunately,they push down at approximately 3 degrees and this causes a loss of traction.The lower hole of relocation brackets changes this to an upward push of 6 degrees(9 degrees total change).Frame/body pushed up=rearend/tires pushed down.It seems that GM purposely designed in a loss of traction upon hard acceleration to keep the weaker than should be rearend internals from breaking.
You also need good/decent shocks to keep the rearend from doing unwanted up/down movements.
The torque arm,because of its length,just keeps the rearend housing from rotating.If it was shorter and attached to the frame/body just forward of the rearend(as on the Buick GNX),it would have a lifting action against the frame/body,thereby having a pushing down action for the rearend and tires.
The LCAs push forward.Unfortunately,they push down at approximately 3 degrees and this causes a loss of traction.The lower hole of relocation brackets changes this to an upward push of 6 degrees(9 degrees total change).Frame/body pushed up=rearend/tires pushed down.It seems that GM purposely designed in a loss of traction upon hard acceleration to keep the weaker than should be rearend internals from breaking.
You also need good/decent shocks to keep the rearend from doing unwanted up/down movements.
