Single Plane M1 P4452898

With the stall speed and gear you have there's no way I'd put a single plane on it. Like Mgunner said torque is your friend and that M1 isn't going to do much below 3500. I went through the learning curve in the 80's when I was young and learned the hard way a good dual plane is the way to go. Recently I had my 408 apart and was considering a single plane on it cause it has an abundance of torque but I conversed with 3 very successful engine builders and all 3 said keep the Air-gap on it since I don't plan on spinning it past 6200