Holley 650 ultra double pumper

Could someone correct me if I'm wrong, but.....I would think going from a 750 vacuum to a 650 DP would be an instant drop in power. IIRC, a DP will give you instant hiccup-free power from outta the hole @ wide open throttle, but flow is flow. If that 3310 750 vacuum is set up right, I'd think your 340 would HAVE to make more power, 340SwingerBuild.

I also don't see how a 650 could be too much for a 318 either. Geez, they came with 750 Thermoquads on the low-compression smoggy 80's 318's.