Uh, I don't know what kind of money you are willing to spend, but to be totally honest it really wouldn't be worth it. I mean, don't get me wrong, the 3.8 is the absolute best 6 GM has ever made, but performance parts aren't readily available. I'd find a Z or an SS (I personally own a 97 SS w/ a 6 speed...www.barncandles.com/Chucks.htm
) to trade your car in for. That'd be your best bet, then put a few dollars into it and run low 13's or 12's without even opening the motor up. I am in the process of rebuilding the LT1 in mine right now so I'm giving it the big "once over". No, I'm not stroking it. I don't want all that low end. The LT1's already have enough low end torque, no need to make it worse. To run them kind of times in the quarter mile you want TOP end. So I kept the displacement at 350 and sent the heads and intake off to Extrude Hone (extrudehone.com) to have them AFM'd. They're process is far superior to even CNC porting (in my opinion) so they are able to get some extremely incredible flow numbers! With the stock 1.94/1.50s they will get my heads flowing 300-310 cfm at a half inch lift! That's some major air flow!! Better then most aftermarket heads with bigger valves... Anyways, that's not all that I'm doing, but the list of mods is too much to list. I wouldn't even know where to start, but I can tell you that I am expecting to be in the 10's on slicks with the N/A bugger. That's enough to waste any jap crap that comes along
Throw on a supercharger and I'd really be bookin...in a daily driver with great street manners!
If trading for a V8 equipped car is out of the question I would consider the following.
1. Better induction. I'd put in a K&N filter at the least! But I do know that there are some nice intake kits out there for the 3.8's. Call Summit at 800-230-3030 and ask them what they have. Normally they are around 200-300 dollars.
2. Granetalli Motorsports MAF (mass air flow) sensor. It flows lots better than stock, plus is has a better chip in it.
3. Good cat-back exhaust. I'd look into a flowmaster. You should be able to bolt their LS1 system up to your car if they don't make one specifically for the 3.8.
4. Headers. A pain in the rear to put in, but if you get a good set the gains are worth it.
5. Cam. I'd look for something with about 220-230 duration w/ around .500 lift, and 114 lobe seperation. BUT, I'm not sure who makes hydraulic roller 3.8 cams so you'd have to shop around.
6. Heads, intake, and throttle body. I'd send the heads and intake off to Extrude Hone. To do my heads it is only going to cost 750 dollars. Not sure with a 6. Probably a hundred cheaper or so.
7. Or you could throw on a turbo, supercharger, or nitrous. I'd stay away from nitrous though if you keep the stock hyperuetectic pistons.
I'm not sure how much you'd be spending total, but it's probably just about as much as you would on a V8 that would go even faster with the same stuff.
Hope this helps
97 SS #1384
68 RS/SS 396 in the restoration process...