Starter motor hot after 30-40 minutes of driving

[Cuda0000]

Still new to owing a Mopar - My starter overheats after awhile (40 minute drive then parked) 10 minutes later and it won’t restart the car until it cools down. The connections look fine, no discoloration, no binding gear sounds, MSD acting normal.​

Are Mopar LA’s starter motors all the same size? I have a 72 Cuda w/ a 1978 360 motor.​

Trying to ascertain if a Speedmaster PCE393.1036 is truly compatible (Mopar and Chrysler SB) 318 340 360 383 440 Mini High-Torque 4Hp Starter​

As always, thank you in advance

 

[Katfish]

Is this a new occurrence, what changed?
Was it working before?

 

[Cuda0000]

First time, but also the first time driving it for distance. Mostly been short drives as I have been working on the suspension, restoring the trunk, and other minor issues

 

[larry4406]

What do you mean by “overheats”?

Won’t crank or sluggish to crank?

Is your timing correct?