...apparently, he was intrigued by my statement, re the "390" and was interested in knowing more about them. I mis-cited data, re the 390---I should have said a "390 hp 351 Cleveland". I do know that 390 Clevelands did exist in quantity---being used in Jersey sea-skiffs, crackerboxes and such race-boats. Good engine---upwards of 450 hp and a real "winder". Good luck.
