I once poured Coca Cola in the spark plug holes of a 59 Chevy with a 348. I waited a couple hours then put the tranny in high gear (stick shift ) and rocked the car forward and back with my pickup until it broke loose. Then I replaced the oil pulled the valve covers and tapped on each valve with a hammer. All but one were free. After a couple more taps it broke loose. Pull started it. It smoked for about 3 days but finally straightened out. Not sure how long it had been sitting. It always smoked on start up though and needed a rebuild. Good Luck Bob H
3/4 Diesel 1/4 ATF Will work the best and rocking the motor back and forth. I did this to a stuck motor in 1980 and it took 3 days but it freed up and i installed it for the customer ( under protest) and damn if it didn,t smoke and they drove it for 4 years before the son blew it up.
Free up the pistons by removing them and replacing them with new unstuck pistons after you bore the block. Not being a jerk, just been there. If you do get the engine to run any other way at best you will have an oil burnning nightmare . The last thing you want running around your engine is iron oxide dust . Thats what they make sand paper with.
Been there done that. I use kerosene myself. Oh and another tip. I usually jack the car up and then put on my breaker bar. Then I let the car down a little so the bar is under pressure. That way when it's ready to move it will do it. I usually come out a day or two later and find it has moved to some degree. Best of luck.
