You DID install a plug or vacuum fitting in the back of the manifold and hook up the vacuum lines? Yes, I've seen it left out and overlooked.
Robert
It's funny, but not, at the same time, I've seen this as well on a few intake swaps/upgrades when asked to "look" at someones install/tune that's not running/running like crap.... I've also seen where some guys left the PCV hose that Holley ships the sixpack center carb with still hooked up to the bowl vent tube sucking the gas right out of the bowl and they wondered why it ran like crap or even stayed running... the OP should post some pics just so some eyeballs might spot something missed?, as the sixpack can be daunting to some not familiar with it's set up
Mike
