About 40 years ago a friend out in California ran a sandblasting rig with a compressor-converted flathead V8 on it. We installed a 4" stroke 49-53 Mercury crankshaft to replace the 3 3/4" Ford shaft, to give it a little more volume.
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!