What is difference between G-plus and Cat-5?

[olds87]

I was looking around the Global West suspension site between those two systems for a g-body. I could not figure it out my self.

Can any one explain that to me?

[wickedmotorhead]

FOR THE G-Bodies

The Geometry-Plus control arms are for the factory spindle and give mostly improved caster, better bushings, and some slight camber gain.

The Cat-5 uses a taller OE spindle (B-Body donor spindle). The taller spindle effectively gives you a nicely aggresive camber curve, but reqiures a different UCA that is shorter to prevent ball joint bind and work more effectively with the different spindle. This system also gives added caster like the Geometry-Plus. One complaint that I have heard has been about the steer arm not being in the correct location for optimal bumpsteer. I am just starting to look into the G-Body geometry so I cannot verify that at this time. Maybe Marcus from SC&C will jump in to clarify more.

This swap is easiest with the G-Bodies because it has all the same tapers for LCA and tie rods. It gets more involved for the A-Bodies.

Our spindles give the same benefit with the added height but we are making a specific steer arm to optimize not only the bumpsteer, but ackermann, and steering quickness. We also will have a specific UCA.

Shane

[olds87]

Thanks for clarifying that out for me.

[PTAddict]

B-body spindle swaps, as used by Global and Hotchkis, are the "old way" of modifying these suspensions for more camber gain, but with serious compromises. The "new ways" of doing this are creating an entirely new spindle, as ATS does, or effectively modifying the existing spindle by using tall ball joints, as Savitske does:

www.scandc.com