383 w 671 question

Shouldn't be to hard to do. Make sure you have a good blower cam in it. Underdrive the blower on the street and it's a 20 minute job to change the pulleys and overdrive it for the strip. The blower doesn't really do much until you push the go pedal anyway. At cruising speeds you are not into boost. I have a Dyers 6-71 on my 340 and love it.

Jack