Sbc starter dragging?

I have a sbc with flat top pistons and a steel crank with aluminum 210 cc runner heads 64 cc chambers 202 1.6 valves and 650 lift springs with .100 longer hardened pushrods i also have a 488 510 lift cam with a procomp air gap intake and a 650 holley double pump carb and a noisy geardrive and a 3000 stall. now here is the problem i am having. It will start runs great when cold after it runs and gets to temp i shut it off and the starter drags so bad it will not turn over fast enough to start until cold again. checked timing at temp and no vacuum advance and it is at about 16 degrees. I also put on a high torque starter it did not help. Any one have any ideas what is going on.