Hey all, I have a 76 Plymouth Gran Fury Sport Suburban with a 440 in it, last fired up about 6 years ago. I've been trying to get it going for the last few weeks with no success. I've replaced the starter with one of the "high power" units (known working) from a running driving 75 Cordoba (at first I suspected the starter was shot), got a brand new battery, replaced the power AND ground wires, as well as got new battery terminals. For some reason, the key doesn't crank the starter, so I have been jumping it with a screwdriver at the relay/solenoid on the firewall (cleaned all the connections there as well). I've taken the plugs out and lubed the cyls through the plug holes as well, and stuck an endoscopic camera down them, they all look good, no rust as far as I can see. It spins over decently with no plugs in, probably not as fast as it should, but it can spin dozens of times no problem. When I screw plugs in though, it turns over very slow and depletes a fully charged, brand new battery after probably 15 revolutions. The wires get hot, which tells me there is resistance, but I'm not sure how there can be. The distributor hasn't been touched, and is in very securely, so I don't think the timing could be off either. The power wire visually "hops" when I crank it with the plugs in. I've got it to pop off a few times and nearly start, but it just won't spin fast enough to run. I've repeatedly checked and cleaned connections, both ground and power, with no issues found. I feel like I've eliminated all the possible issues and am at a complete loss of what to do. The fact that the motor has turned dozens, probably hundreds of times tells me the motor isn't seized, and I feel like I have eliminated all possible weak points in the starting system as well. I also took off the exhaust at the cat to make sure it was all clear, and it is. The oil in it looks pretty good as well, so it is lubricated. If you have any possible ideas, let me know. The car was pretty mouse-infested from sitting, but I think I've replaced and checked everything that could have been effected by them. Sorry for the long post, but I wanted to give you as much detail as possible. Thank you for your ideas, Tyler Wrage.