I just went over to a family friends house. He converted my stock 84 Quadrajet to a Mechanical secondary. Pretty much just remove the vaccum crap and tune the air screws. Shes got more power for certain, why don't I hear about this here? I have never heard of anyone here doing it. My secondaries before weren't even opening thanks to a fudged up linkage. She hauls in fourth gear now and it never did that before. I still need lower gears and maybe tune them to open a little sooner but its nice so far.