I need to remove the 425 from my 77 so I can replace it. How do I get the block out the car? I would imagine it's pretty heavy and mounted in there good can someone offer some advice? Thanks

nobody knows how to do this?

You just start unbolting everything; exhaust, radiator, transmission and torque converter. I usually take out the disributer too to give me more room to get to the trans bolts. Then you find the 2 motor mount bolts and remove them and lift it out slowly because there may be a few wires and hoses you forgot to remove.