Cammed and Sprayed Or Supercharged
The supercharger is nice but its much more expensive. You also have to think about your transmission, rear end, and fuel supply. This can add up quick and is obviously a lot of money.
I love the sound of superchargers...especially rooster style...but...when at idle...nothing beats a big beefy cam. I drive mine every day just about...and you like driving it with the bigger cam since you have a m6.
Nitrous is just as risky. With the press of a button BOOM there goes your motor. They are both risk factors on a stock block. Its all about doing it the right way the first time.
I went 441/407 on h/c through a 9 inch and 56x/60x on just a 100 shot. Nitrous is very easy to make power..... I love the sound of the whine on the supercharger, and its so much more UNIQUE.. every ls1 has nitrous.......
The Best V8 Stories One Small Block at Time
for your application (street car), i would do procharger.
I say cam and N20 or heads/cam/N20. That is if you dont mind a slight lope. Though it may not be exactly "stock" drivability, It will get the point across that you arent stock, and with a tune a large cam can feel much more docile that its profile suggests. That said, if you do want stock Drivability and idle by all means take the procharger. i bought a D1 for my 85 monte SS with a 358 and couldnt have been happier. its all in what you want. Nitrous and cam will be a beast when you want it to, whereas a D1 would be slightly more "refined". like i said though, IMHO Heads/Cam/N20 is a hell of a ride
Heads 1200-2000,
cam 350,
gaskets, oil pump, pushrods, lifters, timing chain 500
FAST 90/90 900-1100
Nitrous kit with all acessories 1000
Lid 100
Your already at $4000-5000 for a decent HC +N20 setup plus the additional labor on tearing the entire engine apart +40 per N20 refill each track night
(Go to the track once a month for a year and you've used Just under $500 worth of nitrous)
Procharger kits start right at 3500 used to 5000 New
Choose your poison Both setups will require full exhaust, fuel system, trans rear, suspension etc...
If I had to do it again I'd go with a 8 Rib D1 tuner kit right off the bat
8-10 hours after you open the ATI box you go from 350RWHP to 500-575RWHP@7-9PSI
HC+N20 Is capable of 430-475RWHP on Motor and 550-650+RWHP on N20


Hell the heads cam can make more then 5-6lbs SC 

