Corvette Performance - C6 questions

My friend just put a supercharger, longtubes, and full exhaust on his C6. He took it to the track and ran 7.60's@95-96 mph. Is this about right for his mods? He said that it had a 3.15 gear and he was thinking about going to a 3:42 or 3:73 and putting a small stall in it but doesn't want to hurt the drivability. I told him that I would go with a 3:73 and a 25-2800 stall. Do you agree with my reccomendations or would you go with a different setup, if so why? Thanks for any info. :)

I'd leave the gear alone and do a 3200 stall (actual stall speed behind the blower) for a street car and a 4000 if he's looking to run 10's.

I'd leave the gear alone and do a 3200 stall (actual stall speed behind the blower) for a street car and a 4000 if he's looking to run 10's.

I agree, the gear is not bad and a nice low 3X00 stall would be great. The numbers seem right, but he had to have traction issues? :jest:

If he insist on gears, I wouldn't go any higher than 3:42 for driviablity. I know guys running the 3:73, but that is just to much if you ask me.

Actually, he said the car hooked and bogged. He hasn't had it dynotuned yet so I know he's got a little to gain there. So if he goes with a 3200 stall what kind of gains do you think he will see? Thanks.

Did he ran at Ohio Valley ;) I usually run out at Clay City myself its 1/4 mile :D.

With a low 3XXX stall would work great in there, a 3.73 gear in that car would be bit much IMO. Maybe a 3.42 but with the cost of the rears, unless he does it himself, I realy do not see it really being worth the work. With that 3.15 and a stall he should be right under boost at the line of that stall, he will launch like a feakin ape. But I tell you this, that he has any thought of changing that convertor and the rear definitly do it at once. I hate working the drivtrain in those cars takes forever lol. One thing about these cars though they really start to pull up to and after the 1/8 with centri type blowers. Mine pulled the hardest going into late 2nd and into 3rdgears in the C5.

Actually it was at Kanawah Valley, I'm gonna see if he wants to go to Clay City next time I go. Thanks for the info. :)

Let the converter manufacturer know you are looking a converter to put in a blower car. Converter will help more since you would have a looser converter and the car have a better power band. More gear will help you accelerate, but a converter will help more. Remember the LS1/LS2 is a 5500-6500 rpm machine, so you want a converter that will get you to your power band as soon as possible.

I run a 4500-5000 stall now. I run 116mph in the 1/8th.

:eek2: Damn! My car traps 103 in the 1/8 th on a shitty 2.1 60' I'd love to know what 116 feels like. Mabye one day. :(
Since I don't mess with alot of auto's I don't know who to recomend to him, I hear alot of people talk about Fuddle, is that who you would go with? Thanks again for the info.

Actually, he said the car hooked and bogged. He hasn't had it dynotuned yet so I know he's got a little to gain there. So if he goes with a 3200 stall what kind of gains do you think he will see? Thanks.


He definitely needs a good safe tune!