[DAVID GAGNARD]

CB;

I'm pretty sure it was Hal that "found" 30 to 40 hp on a chassis dyno with some tuning on his vac sec. carb,just changing out springs........ I have run a vac. sec. Holley for 7 or 8 years and once I got it "tuned" to my engine it ran great,then I was given an old (20+year old) holley double pumper,I rebuilt it myself and jetted it to my motor and love it,do not think I'll run another vac. sec. carb again...................BTW; it works great on the street and contrary to what I was told by many people,my gas mileage stayed the same,if I drove it the same,with your foot in it,the double pumper will burn more gas,but for cruising,gas mileage was NO different and I found the double pumper easier to tune...........Run what you got,but if you could borrow a 750 double pumper to try for a weekend,do it and compare,then decide what's best for your needs....................

David