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View Full Version : Top Speeds for Road Atlanta



RR
05-04-2006, 03:27 PM
Hi guys, couple of us are heading to RA later this year for a regional and then the ARRC. I have 2 diffs for my car for different top speeds. Can someone tell me what kind of top speeds a good ITS car will hit at Road Atlanta. Thanks for the help

Mazmarc63
05-04-2006, 03:50 PM
All the fast Rx-7's use a 5.12.

Right Kent?

I suspect 130 mph is about right.

seckerich
05-04-2006, 05:14 PM
Some of the alternate rear gears may be better on the back straight but you will get killed out of 7 and uphill into 1. Go with the 5.12. Don't have telemetry from RA to give you speed numbers. Seems like 125-128 rings a bell.

gsbaker
05-04-2006, 06:03 PM
The last time I was there was in a street Porsche 996. 3,000# w/300hp. About 130 braking into T10 if you launch well, FWIW.