Rear Tire Traction

[541 SC]

I am fairly new to posting on this site, but I have been visiting and reading a lot for a few months and I have gotten a lot of good info from here.
I would like to get your input on rear tire traction in general on Cobras, and more specifically ERA's. I would especially value the input of Cobra owners with 650+hp and 600+ ft*lb engines. Do you find that you have addequate traction to put all of the power you have to the ground? Obviously excepting burn-outs and acceleration during hard cornering. I'm talking about when you are going in a straight line and you punch it, or drag racing. Some tire slip can be expected, but if you send the tires up in clouds of smoke, that is counter productive to going fast! I'm trying to determine to how much power you can actually get to the pavement under normal conditions using good high performance street tires. My ERA has 315/35/R17 BFG G-force T/A KD tires in the rear. For those familiar with ERA's, I have the outboard braked IRS suspension, with Jag limit slip diff. I want to get an idea of how much power will be usable and beyond what level is extra power a waste. Also what do you feel is a good balance between bottom end torque and high RPM hp? Having lots of low RPM torque makes a good drivable steet car, but how much is too much? At what point is it better to trade excessive low RPM torque for higher RPM hp?

Roy