Add another 100 or 175 and pick and pull a GM 3800 supercharger (eaton), its the real deal and good for at least 10 lbs boost. It'll give up the goods, been looking to see if anyone had hung one on a 4.0 yet. I think since it is a roots type (and yeah you lose a bit in mechanical loses, but the gains are still pretty nice) it should have grunt and start building boost right off idle. Just a thought and I'm sure not original others have put it on other motors with pretty good success. I hear past about 10 lbs they don't have much and at that point your probably better with a turbo.
Regards,
Don
Ps: Sorry I forgot how old this post is, I did'nt remember what page I was on since I'm browsing post that could almost be considered archives at this point.
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