70STANG GUY- Stupid question. What is the "EAR" of the starter. I tried to talk to the starter to ask him where is was but he wouldn't answer!

LOL

 

the mounting point where the bolt goes.there are two of of them. and if your engine is loud enough the starter may be deaf or hard of hearing try yelling louder.

 

OK. I Tried connecting from the bolt at the ear of the starter to the neg. post on the battery....same

I put on a heat shield.....same

I guess a spacer is next. Any thoughts of where to buy one?

 

any auto parts store sells a carb spacer

 

any updates on your problem?

I've got the same thing going on with my 351c. When it gets hot, the engine won't turn over. Not even a full revolution, barely a sixteenth. I put on all new cables and still no go when she gets warmed up. Does not turn over

 

More than likely it's the starter. Higher compression engines(especially depending on camshaft timing) can be hard, or in some cases impossible for a factory starter to turn over. Also, those big bulky crappy starters have tight clearances in them, so when they get hot they expand internally and begin rubbing, that's often the reason the car can't turn over when it's hoot, the starter doesn't have enough power to fight it's own internal resistance from 0 clearance let alone that AND starting an engine, especially one with higher compression. The start could be going south as well. It's a good idea to get a smaller higher torque starter anyway, just cuz they're more reliable, way lighter and easier to replace(cuz they don't weigh a ton and take up so much space). I run a late model 5.0 mini starter on mine, haven't ever had any problems with it.

 

my money's on this one(or the positive lead)
Very common problem with Fords, exacerbated by heat (and high compression etc)
anyone checked the battery cranking amps - can be showing full charge in volts but not enough grunt to turn over the starter when its hot (would also show up on cold morning starts).
if the starter is sticking from overheating a quick test is tapping the casing with a hammer to free it up (firmly but not so as to dent it). that'll at least tell you if the problem is there but you may have to jack the car to get at it from underneath. At least it wont cost you anything.