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I have had 750 ,850 Holley double pumper's handed to me, i boxes.. They ran wonderful.. Someone loaned me a 750 Quick Fuel 750 d.p....with a choke.. It fouled plugs, on a 550 horsepower 383.., I pulled it apart, swapped the silly four vane P.V . fot a Holley p.v. ...it s still black dry on...

Been a decade,since I tuned anything running anything quick. Usually,a pump gas guy.How nuch ,has reading the plugs changed,with more alcohol added to the pump gas? For what it's worth: Old school analog MSD 6al,and possibly N20 involved,100-125 shot). Magnum 5.9.

I did it,a few times. Someone, showed me a better way. Seen a lot of new FABO members,posting multiple threads on the same car(different projects,all at once)!. My advice: slow down,one day at a time. Share your advice,FABO members,about advice and organization.