I read that I could tune my Edelbrock 750cfm 4-barrel carb by hooking it up to a vacuum gauge, is this true? If so, do I hook it up to the 2 ports at the front of the carb and adjust both screws to get the best result? Also, it is recommended that my measurement should read between 15 and 20 in., but I have heavy cam and higher compression (not exactly sure what size etc.) so would I be looking at a measurement more around 10? What do I look for as far as adjusting the screws; i.e. rise or fall in vacuum readings?

Not done yet, stick with me.

Should I attach it to the manifold port, also, at the back of the manifold and check there also? Will the measuremnets be the same? It also has a pressure gauge on the dial.

Thanks again.