Can anyone tell me/give me a diagram of an Edelbrock Performer RPM Vortec intake that tells me what all of the ports on it are for. I know some are for vacuum and water, but which ones are which? And are there ports for other things as well?

 

the ports on the intake runners are for vacuum, the ones on the water passages front and back of the manifold are for water/water sensors, whatever you want.


do you have more ports than this? yellow are water, orange are vacuum.

i have a heaterhose in the front left hole and my fan switch in the rear left hole, the others are plugged

 

On my RPM Airgap, I have a port on the front crossover below the thermostat for a temp sensor/switch. The hole points forward, so I will be able to run the balance hoses front to rear and am going to put a 'T' in the left rear for the heater, which I don't use except for extra cooling capacity while cruising.


I still wish mine came with the "Made in USA" on it. Must be because it's a Vortec. That could also explain the extra port below the thermostat.