Help with an 83

[dalydude]

Hey anyone please help if you can!

I have an 83 stang with a 351 stroked to a 396. My problem is I disconnected my battery a while back and then just recently tried to hook it back up. The neg. was connected but when I tried to attach the positive, the starter started revving as soon as I made contact. The engine doesn't turn over, but the car's starter instantly starts without the key in the ignition. Before I tear the whole car apart, does anyone have any ideas?

Thanks,
Dalydude

PS The car also has a MSD6A system with an MSD blaster coil. Could this be affecting it in some way? What about the ignition switch in the column?

[GTStang]

Sounds like your starter soleniod is jumped somehow. Or like you mentioned it could be your ignition switch but usually it turns the car off on you all the time.

[knucklebuster2]

Lightly tap the starter solenoid on the fenderwell. See if that helps. Then replace it.

[Mercracer]

If you disconnect the small wire ("S" post) from the solenoid, and it continues to stay active, then the solenoid is bad, which luckily is cheap and easy to replace.