[Stan Weiss]

Originally Posted by Shockwave78

Idle speed is set to 750 and I am seeing about 15" of mercury. With the stock cam, the vacuum was 18-19", I was expecting a drop with the new cam, but I wasn't sure how much it should be.

Originally Posted by Shockwave78

Out of all those, it is closest to late valve and late ignition timing. I am not sure which because I do not know what the vacuum should be with that cam. At idle the Vacuum I saw was 10" +/- .5". I disassembled the carb and the float was bent in the wrong way, so as the fuel level dropped, the needle never opened. With constant fuel pressure, I'm sure the needle was never seating. Everything else looked good so I reset the float and will be putting the carb back on today, if that doesn't fix the issue I will probably end up pulling the cam and reinstalling the stock one.

I am working on a couple of different things and so I don't catch this until now. Which one is correct? After your first post I did a rough calculation and came up with your engine, cam and 8.0:1 CR should show about 14.7" at idle.

Stan