my friends car ha sbeen sititng all winter and we tried to start it recently, it wouldnt turn over, its not the battery, we tried jumpstarting, how would i start it? im was thining get a wrench on the crank and move it a little bit to get it unstuck

ummm its siezed?? That means the pistons are pretty much stuck to the cylinderwalls, well thats if its seized really bad. Goodluck.

Probably not seized.

Try turning the crank

i have the same problem with my 91 Blazer 350, it wont turn over...

im goign to take out all the plugs so there not compretion and then try turning it over...

Take all the plugs out and shoot bust-rust (not WD40) down the cylinders. Let it penetrate for a few hours. Then hand-turn the crank.

My battery sits in my room if I know I'm parking the car for more than 2 weeks untouched.

But I would definantly try what alec b said. Also, when you try to crank it by hand, try and crank it in reverse to the normal running direction (probably counter clockwise). Chances are that theres just enough of a rust ring in the cylinders it can't get past.

Turn it backwards until it stops or you can't crank anymore, or until you get tired, what ever maybe the case, and then try hitting it with the starter. Turn it back should gain you enough motion to hit the starter and at least get the internals moving enough that maybe the torque from the starter can bust the internals through the **** you have built up. I had the same problem with the engine when I put it in my truck. Good luck.

would i be able to some kind of test with an inductive pickup or something to test if the starter motor is good withotu actually removing it?

Remove the main lead and check the continuity with an ohm meter to ground, should read low <250 ohms.
If it reads open, its toast.

Try to turn by hand as mentioned above and if siezed open the plugs and put in some oil, 2 cycle will work too.

Way back in ancient history, when I was in college, the guy I worked with during summer break worked on small engines. He said that he used white iodine in the cylinders of seized engines. He'd let it set a couple of days, and said it never failed to work for him. I've never had the need to try it, so I have no idea if it really works, or why I even remember it.