Equal length is nice, but a good trade-off if you don't have time/skills/money to do equal length is to use heim/rose joints on one side and a bushing on the other. Like the old battleversion and Cusco Jr link, 4-link replacement arms. Having the bushing on one side (urethane/stiffer than stock) and solid joint on the other allows for a very stable/predictable movement without the problems of binding, vibration, and noise you normally see with both sides being solid on an unequal length setup. The vibration and noise will still be present even with equal length if it's present in the rear diff (ie wont change), it will just have less chance of binding.
I've had solid/solid and solid/bushing setup on my car back to back trying things out and there is a definite difference between how the rear end articulates between the two. If running stock/unequal length I'll probably NEVER go back to solid/solid.
Pinion angle on our cars does NOT gain any traction on our cars, or at least the gains will be so minimal we shouldn't be able to tell (afaik). With a 4-link (or link style susp) the forces on the arms stay pretty much the same and transfer directly to the chassis. That's only something you worry about with leaf springs, slicks and drag racing. If you want more traction run traction brackets.
Andrew
Reply With Quote