WOT manifold vaccum
 

Probably discussed previously but I got tired searching.
What is an ideal manifold vacuum at WOT? I read some online blurb where a guy was using manifold vacuum to size a carb. That is a WOT vacuum of 3" would indicate the carb is too small and is creating too much restriction. Currently my vacuum goes to 0" when I go WOT. 825 Demon on a 461.
Frank

0.5" or less is ideal

As stated in the above, for maximum wide open throttle hp .5 hg.
Attaining this though can leave you with degraded torque production in lower rpm ranges .

For pure street motors only that are making 500 hp or less out of 400 cid or less I would live with 2 inches hg .