[SactoJim]

I think the key question here is what is your budget? There's a few different directions you can go.....just depends what you wanna spend. Seems it's pretty easy to get 500 streetable HP out of 6.0 LS motors these days, but if you're set on your small block I would build it to give you low end grunt....that's what makes a driver fun. Think extra cubic inches, like stroking your 350 to 383.....or finding a 400 and building it. Put a good set of heads on it and a healthy hydraulic roller cam and you will be smiling every time you push the go pedal! Again.....all depends how deep you pockets are.

Mines a 383 with a little weiand 142 on it that maybe makes only 5lbs of boost, but talk about a fun street motor....and it all fits under my stock hood. I don't have to, but I wouldn't hesitate to drive it everyday if needed. I have a 700r4 trans as well which I would highly recommend for any old school type of daily driver given what gas costs these days. I'm currently finishing up with putting a new hyd roller cam in it as well as porting the Eldy heads and will have it on the engine dyno later this month....should be 525-550hp and a real broad 500 ft lb torque band.

Like someone said above.....roots blowers aren't the best choice and they are the least efficient of all forced induction, but like all positive displacement blowers, they start to develop boost right off idle where as centrifugals and turbos typically build boost higher in the RPM band. A nice little roots (or screw drive type blower) setup will make a 350 feel more like a 500 cu in motor.

There's alot more that can be said about all this as I only scratched the surface.....a few wisely worded Google searches will give you days of reading!