starters keep getting to hot need help

HEY ALL FABO FREINDS my new motor is in and running thanks to a lot of fabo help .
I built a motor close to a tony sanchez recipe. IT"S a71 360 LA base block built to some wheres around 366 to a 372 this bleeper Rocks backed up by a TSI trans nested in my blue 65 BARRACUDA . So I have always had this problem even with my 340 in it with stock manifolds , I fire the car and it turns over nice and easy ,but when it gets up to 160 temp the starter wont crank the motor until it cools again ,thenit spins free as a bird . Can some 1 tell me where to get a double insulated starter ? or how to address the issue I have tried the heat tapes and a guard today we broke the motor in I got as hot as 170 sitting still for 30 minutes ,I was so impressed with the new radiator and build ,but when I would go to restart it ,its like a dead battery until I get cooled down to 140,then it would spin free again. new battery 4 grounds battery in trunk with 3/4 positive wire ,wich all checks out fine no cracks or problem with wire housing and an 18"3/4 ground to frame + 3 others is any 1 else having this problem ? how did you fix it ? or where can I find a better quality starter . I go threw 2 starters a year in the last 3 years . I hate buying these starters you have to tighten every nut and bolt before you even put them in I spend more
,go to a different auto store and get the same results, junk starters.. Other than a few little changes in the engine combo this is an awesome 425 hp smallblock for any mopar I will post the recipe/combo again soon cost 4500.00 to 6500.00 depends on who you know or what you can do your self ,biggest cost and change was the RHS 2.02 360 X HEADS instead of the eddies . so any hoo can any 1 help me with my starter heating issue ??
Rick,Tony,Screws,E ,Cracked/ FABO PEEPS ALL INFO HELPS most opinions will be gone over . thanx guys .a ton of 64 ,65 barracuda parts here ,to help you first gen guy"s ive just been so buisy with this build have patients if you rite pms add a phone # I would rather deal over the phone rite now so leave your # or get mine thru the grape vine if I cant help you I have a list of some 1 with 64,65,66 Barracuda"s that can . for people that aren't members please join us ,there is so much info to be had in here any problem can be solved with your mopar. THANKS FABO TO ME ITS BUILT ON TRUST AND FREINDSHIPS PEACE PEOPLE will be watching for opinions with my starter problem or parts needs , Jon