Go one step further and remove the intake/exhaust manifold assembly and the freeze plugs on the driver's side of the block. Then pressure wash between the cylinders with the high pressure wand pointed toward the bottom of the water jacket. Wear a rain suit and a face shield- - - -the blowback will be epic. Replace the pressed-in freeze plugs with the rubber expansion type.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!