Starter Solenoid Update

That's about double what it should be. I'd start by trying another starter.

I just replaced the starter with a remanufactured unit. I will pull it and have it tested. I have replaced all of the cables as well. I am really beginning to think I may have an internal engine problem.

Try using a beam type or dial type torque wrench to measure how much force it takes to turn the engine via the front of the crankshaft, see if you can compare the results to those from an identical engine that doesn't burn up components.

Got out the torque wrench today and checked the turning torque of my 351W. With the plugs pulled and all accessory drive belts on, it takes 70ft.lbs of torque to start this engine turning. Once turning it drops to about 50 ft.lbs. This is a new short block with less than 1000 miles on it. For that mileage, I don't feel that the torque value is excessive. Any thoughts? I am going to pull the starter on Monday and have it load tested to see if I have a defective starter. After the I'm stumped.