[Bob Carriere]

Gary get ready for a Saturday night bath.
Nothing beats a heavy spray of engine degreaser in a spray can from CTC.... you will need 2 cans...followed by a good high pressure wash, anything over 2500 psi...... all the heavy greassy crud will come off and I doubt you will have much paint left on the block itself. Make sure the dizzy, fuel pump and carby are removed and the holes plugged tight.

Be prepared to get wet. Consider removing the water pump and sticking the pressure washer wand into the water jacket. Try to remove the pet cock on the carby side bottom RH corner near the bellhousing.... you may need to use a coat hanger to break up the rusted crude that may remain in the pet cock hole of the block. Run the water until it come out clear.

Let it dry in the sun and give it a final hand wash with acetone or Xylene before repainting. You may want to change all the old cork gaskets before doing the paint job... pan, valve cover, side pushrod cover.

I have heard that some guys use OFF oven cleaner with good success which is essentially a diluted lye solution and corrosive to the skin.

Any minute amount of water that gets inside the engine will come out when you remove the pan for cleaning out sludge.... also cleanout the screen on the oil pump.

Good luck with the bubble bath.... no pun intended!!!

Bob C