[604birdman]

ok, so i found a master cylinder im interested for a 4wheel disc brake. Power brake conversion for 1967-70 Mustang with 4 wheel disc brakes

It says it requires 15 lbs of engine vacuum pressure, and a factory motor puts out 18lbs.

I've given myself 2 choices of cams, however i dont know which one or if both will give me enough vacuum.

First choice: edlebrock cam p/n#2122 Lift (.448/.472)
Second choice: edlebrock cam p/n#7122 Lift (.496/.520)

Engine is a 302, and hope to buy edlebrock intake p/n#71214

hope this helps, any help will be much appreciated thanks guys.

[The Greek]

Valve duration and overlap effect vacuum. The amount of lift isn't really a factor. If you find that engine vacuum is too low, a vacuum reserve canister can be installed from a parts car.

Call Edelbrock about this. They should have an idea of the amount of vacuum your engine will produce for accessories with their camshafts.