This is a custom Stage Four Holley 950CFM
Blow Through Supercharger carb built by:
I had them powdercoat it with "Flash silver"
PRI JETS:70
SEC JETS: 83
POWERVALVE: 5.5
PRI SQTR: .031
SEC SQTR: .035
IAB: .063
PRI HSAB: .031
SEC HSAB: .022
I thought that the 950CFM would be too big for the two engines that I will run it on .One is a 350ci and the other is a 415ci but the guys at "CarbShop"said that it was the best setup for what I had intended. Well I have to say that they were correct. It does run a little rich when the supercharger is disconnected but it is surprising how well it run. With the supercharger connected it is very well behaved. There is a 3AN hose that balances the two bowls under pressure and a 3AN port that connects to the "carb hat" to pressurize the shafts. There is also a small vacuum port under the bowl to provide signal to the bypass/blowoff valve.
There is no real provision for vacuum powered devices such as power breaks as that port has been capped. There will only be limited vacuum at idle and pressure above idle so what i decided to do was to drill a 0.5" hole on the side of the RPM AIR-GAP manifold on the linkage side and tap it to accept a 0.5mpt to 6AN endura elbow. Then I connected a 0.2 psi stainless steel 0.5" check valve to the elbow and then plumed that into a vacuum accumulator tank to power the vacuum driven power breaks - works flawlessly.
