Little info below:: says 99,568 were built 1959 and 1960 only
The 383 cubic inch RB engine was only available in 1959-1960 on the US built Chrysler Windsor and Saratoga (thanks, Ian Smale and Bill Watson); one of Trenton Engine’s lines had been converted to the new RB engine (to make the 413), and demand for the 383 was too high for the remaining line. The solution was to create an RB 383 to fill the gap, until the plant figured out how to quickly switch from one block to the other. American-made Chrysler and Imperial cars used the RB blocks, with the 413 going into Imperial, New Yorker, 300E, and 300F. U.S. Chrysler/Imperial usage for those years was:
Vehicle Engine 1959 1960 Total
Chrysler Windsor / Saratoga RB - 383 47,219 52,349 99,568
Chrysler New Yorker / 300 RB - 413 17,025 20,602 37,627
Imperial RB - 413 17,262 17,719 34,981
Original is at Mopar (Chrysler, Dodge, Plymouth) RB series V8 engines: 383, 413, 440, and 426
http://www.allpar.com/mopar/383.html#ixzz2bsDuDA77
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