speed demon or mighty demon?
I'm going to buy a new demon for my 408 windsor, compression is 10-1, hyd roller cam is 231 242 578 576 @0.50 almost 114 lca, 205 cc twisted wedge heads and a port matched stealth in a 67 must vert, lentech aod stalls about 3000.
I ran a 650 speed demon out of the box and it ran great, got a pro systems carb made and it seems too big, less throttle response and really rich and WOT BOG.
I am going to a 750 annular BG carb, my duration falls within a speed demon but the mighty demon is more tunable but no choke, not that I need one in So Cal. But I in the past I modify it (remove choke blade) but use it to keep idle high until warm.
Mechanical or vacuum? I actually liked the way vacuum runs better and I will be changing rear gears from 3.00 to 3.50 which should lower stall a bit, this car is a weekend cruiser only and never sees the track.