Quote:
Originally Posted by valentine_viper
Hamrhead, that's a great time and excellent mph for a stock viper. Congrats!
Although I have quite a bit of experience drag racing (but not in Vipers) I can't seem to get anywhere near that. Been wondering if I am doing something wrong. On factory 10 spokes and run-flats, I couldn't seem to do better than high 12s at 113 mph. It was hot out, but that still seems really off. 60' times where about 2.2.
I swithched to light weight CCRs and Sport Cups which knocked off about 72 lbs of unsprung weight and that made quite a difference; 11.9 at 118 mph (still hot out). Although that was much better it still seems off compared to what I see from others and the magazines. 60' times dropped to 1.9. The viper is a tough car to launch. Getting a lot of wheel hop if I try to leave hard.
Part of the problem seems to be the gearing which is not optimal for drag racing. At first I was shifting at redline in 1st and 2nd, then running it out in 3rd to the finish line. I would hit the finish right at 6000 rpm in third. I thought that might be what was limiting my mph, so I tried short shifting 2nd and third a little so I could get into 4th for about the last 2 seconds of the run. I did get a little more mph, but not much. ETs seemed to be about the same.
I had the car dyno'd and the numbers where healthy, so I know that isn't the problem. Could you describe your technique? I am real curious to see wht you might be doing differently.
Thanks!!
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Its amazing what heat and track conditions will do to your times. At VOI9 it was hot in Vegas. I ran a 12.5 @ 115 mph.
Few months later, much cooler, i went to my local track and ran some 12's and then finally high 11's all in the 123-124mph range.
Did a few more mods and changed to PS2's, but it was a little warmer at next visit to track. Ran a best of 11.6 @ 120 mph. Its really funny how much mph can vary with heat and even your launch.