Hey guys, I have a two parter today. The 429 has a Rochester on it right now, my uncle doesn't like Rochester and would like to put a holley on it. I don't have all the details from the previous owner yet, but know that he said it was a 925 (if I remember right) and that he put bigger jets in it.

So questions

1. How do I figure out which carb to get? (edelbrock would probably make him happy too). I found this formula on here

Engine Size (CID) X Maximum RPM / 3456 = CFM @100% Volumetric Efficiency

Where do I get the RPM number from?? (the tach on this thing CAN'T be right since it shows idle ad about 400 and never gets much over 2000, but we'll tackle that another time).

2. I am going to install a power brake kit, which I am guessing will need vacuum. Do I have to get this off the manifold or can I get it off the carb? I saw one on the HOlley site that said it had 4 vacuum ports for those sort of things (I know I need to run the PCV line up to one).

thanks!

Red