I am redoing a 1957 olds 98 and the 371 is locked up. I have the motor pulled. I have all the pistons out but one is stuck.. I been soaking it with blaster for about 2 weeks but it still wont move.. Does anyone know of a way to get it out ? Thanks Rob

 

turn engine upside down. Use a wooden broom handle or dowl and poke down to the wrist pin and tap on the dowl with a hammer not hard just firmly enough to provide shock force to break it loose.