My 57 chevy has the 283 with the draft tube. I'm doing away with the draft tube and want to connect the pcv valve and brake booster to the rear of the original Rochester 4jet. My problem is connecting all this together. The port at the back of the carb is 1/2", the PCV hose is 1/2" and the brake booster is 3/8". Any design ideas or pics would be greatly appreciated. Thanks guys
I wouldn't connect the PCV and brake booster to the same vacuum port. A PCV is kinda like a controlled vacuum leak, which will affect available vacuum to the booster if tied together. Kinda like hooking up an electric choke to the + side of the ignition coil. Doing that can affect current available to the coil. Need to find a separate vacuum source. Bill
The Jalopy Journal
