There is no such thing as a 310 Chevy truck.
on top of the starter
The starter solenoid is bad.
The starter solenoid is attached to the starter.
About 65.00 $
It is on the top of the starter, It's part of the starter.
between starter housing & block
Need to know what year and model the truck is. 1992 Chevy k2500
No. No such thing.
450
under the engine
Follow the positive battery cable from the battery, it will lead you right to the starter.