[all american boy]

'ended up with the same sized engines just by coincidence.'


Probably.Chrysler held there ground though.They had '59 383 in the works.


Then Ford came out with one in '58 before they did and they just kept



working their plan.Would have cost them money to change it.


Then it doesn't matter really.


MEL 383 bore and stroke is 4.30 x 3.30


RB 383 is 4 and 1/32 x 3 3/4 in or 4.013 x 3.75


Different approaches for same displacement.