A brief discussion on another thread brought up the different HP versions of the 59 and 60 engines. You might find this publication interesting as it describes the new product line at the beginning of the production year. It establishes the fact that the W engine line up was changed in late 58 with the 315 HP Turnpike Cruiser and later, the 300 hp solid lifter single AFB engine both of which carried over to the beginning of 59 production. This publication doesn't discuss the suffix codes for those engines but does describe the internal features used to produce the special high performance improvements. The suffix code for the 315 hp was FB and the 300 hp was FD. apparently there was no FC suffix.
For the engine specific section click here:
http://chevy.oldcarmanualproject.com/manuals/1959npi/59npi23.html
For the entire pub go here:
http://chevy.oldcarmanualproject.com/manuals/1959npi/index.html
For the engine specific section click here:
http://chevy.oldcarmanualproject.com/manuals/1959npi/59npi23.html
For the entire pub go here:
http://chevy.oldcarmanualproject.com/manuals/1959npi/index.html