Join Date: Mar 2002
Location: Austin, TX, USA
Pull the plugs and see if it will turn over. Any chance a cylinder may be full of water, fuel, or oil? If you do this, it's a good idea to disconnect the coil's power feed.
If this doesn't work, either the motor is siezed somehow or you've still got an electrical problem lurking.
68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI