starter bind or stuck
on my 400 sbc is semi assembled as heads and valve-train but no plugs in the motor so theres no compression i have a starter that worked in a car two years ago and now is on this motor. The drive gear pops out hits the flywheel(auto tranny th350) but wont turn over the motor and slides back in but just catches and gets stuck on flywheel going back in. im wondering why it wont spin the motor over theres no compression in the cylinder and the rotationg assembly is all new and spins over no problem. I've already checked all connections and battery tried three different ones looking for ideas on why it wont spin the motor over