KRPerf

Hey everyone. I just recently obtained an '03 Cobra. It will see the dyno soon, just to make sure everything is good, and because I'm picky about tunes on modified cars. Anyway, I was wondering if anyone had some good guesses as to how much power the car is making to the rear wheels. The car has a smaller pulley, I believe it is a 2.95"? It also has the "big oval" throttle body and elbow from accufab along with a 95 mm mass air meter from C&L. On the exhuast side, the car is fitted with bassani headers, bassani off-road x-pipe and borla after cat exhaust. I have only had the car for a day and have no idea if it received a tune or not, ......I hope it did considering the mods. But, if anyone has any good guesses about potential power output I would greatly appreciate your input. Thanks

ShaneHayes

I have about the same mods as you, and I too just bought my 03' Cobra. It dynoed 473whp/456ft tq. I don't know what kind of dyno it was though. G'luck.

KRPerf

Nice, thanks

chevysalesman614

this post probably will not help you. but its all i can offer

i had a cobalt with the eaton M62. for every .1" of pulley size you gained 1 psi. on the cobalt 1psi = about 8hp and 6 lb/ft to the tire.(on a dynojet)
i would assume on a cobra, 1psi would be close to double those power #'s

i'm sure someone will tell us different, but maybe that will help you guesstimate. whats our stock pulley size? (i just got mine last monday)


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Blownsvt

i would guess you would be around 470ish being that you have header back exhaust. I mad 447 with a 2.76 intake and mid pipe back exhaust with a stock throttle body. only1 way to know for sure.

AZ SNAKE

Im gonna say 450-460.