04-03-2008, 05:57 PM
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CC Member
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Join Date: Aug 2006
Location: San Diego,
CA
Cobra Make, Engine: SPF1715, Roush Built 434 ci Stroker, Dart Block, Ported AFR 205 Heads... 561 hp / 547 tq, Former Roush Show Car, Completed and Prepped By Olthoff Racing.
Posts: 1,066
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Not Ranked
Quote:
Originally Posted by greg schroeder
My Cobra gets to 140 mph in about 12 seconds with 3.73 rear end, 1.0 4th gear and 28 inch tall rear tires. I’ve never tried it, but I think the car might blow off the road if I continued with the .64 5th gear. With about a .45 coefficient of drag the carburetor might become way to lean with the resistance of wind. It's pretty smooth at 140 mph in 4th though.
There's a 1/4 mile pass video in my signature below and a G-tech graph representing a lower DA in my photo gallery for reference.
I don't think it's a good idea to go faster in a Cobra.
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I took mine to 147 in 4th (actually going up a grade) and the car was still pulling hard. The car felt very smooth, but I would not take it much further. I was playing with an AMG Mercedes and after about 120 he was very far behind me and I did not feel the need to push it any further. My car is set up very similar to yours.
Very nice pass BTW. What tires were you running in the video?
Last edited by SP01715; 04-03-2008 at 05:59 PM..
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