kenglish

I'm new to the blower world, I have a few questions. sbc 350/671

1. how do I deside what pulleys to run? I want to end up with 6 lbs of boost., I think I understand the under and over driven thing, that is changed by putting the bigger pulley on top or bottom right? I got a 40 and a 43 with the used blower.

2. Radiator Im going to run and alum one, but do I run the stock 350 fan or electric?

3. how about fuel pumps, electric or mechanical? I'm going to run a boost sensitive pressure reg.

4. Short water pump, but electric or machanical?

5.roller rockers, the guy who built my motor said I really didnt need them, but I was wondering if I should really have them?

thanks, and help would be great!
PS, I's needing the front snout drive part for my blower if anyone has anything let me know! and a sbc Idle bracket.