Funny you say it sounds meaner. I usually warm the car up driving it around without the driver's door on it. Once I get the temps up I will punch it a little up to about 4000 rpm a couple of times coming up the return road. I did that yesterday and it 'bout cracked my eardrums.
I rebuilt the motor a few weeks ago and am just getting the tune right. The rear tires are brand new. The first run last night was the 4th on the slicks so they are just now starting to bite plus I'm still playing with the pressure to see what they like. It's the first set of M/Ts I have run and they definately want more pressure than I ran in the GYs. I ran 8 in the GYs and last night ran 9 in the M/Ts and it looks like they want even more.
I have a 454-R intake on the way that I want to try. My Super Vic has done great but still might be just a tad big. I guess I'll find out if I change intakes and the car falls off any.
Take care,
George