ok ok.. working on the cat today trying to make more power. i bought a spacer for the carb. its a 1" Moroso spacer with 4 holes in it. i went to swap it on along with the new 670 Holley Street Avenger i have sitting around in my garage ( it has downleg fuel inets.. will clear the air cleaner ) i bolted it all up and after a snafu with the battery cable.. tried to start and it wouldnt idle at all. would fire, run at a HIGH idle then die fast. pumped the gas before starting it and it would run longer, but then die again. got mad so i threw my old 600 Holley back on with the spacer still on and tried to start it. ran better, but still would die. it would idle longer than the 670 but still died. the exhaust sounded different too... more err... radical ( i cant describe sound ). so i got pissed then came back inside. ill screw with it tomorrow and take the spacer off and slap one of the carbs on to see where i stand. just dont want to get mad and break something in a fit out there. god... ive swapped several carbs in the past... but why is it when i work on MY car everything goes wrong??? sorry.. needed to vent. any ideas as well what im doing wrong? i know its a bit strange to want a spacer too but im on a neverending quest for more power before having to swap cams.