My experience looking for an "original" AC 4656 fuel pump has been enlightening to say the least. Corvette Central sent me a rebuilt "original" 4656 and it is very close, but it does not exhibit all of the characteristics of an original 4656. Since my car is a driver, I am going to keep the CC pump; actually already installed it.
I have learned that AC fuel pumps parts can be mixed and matched in many different ways, part stamps ground off, re-stamped, steel rocker arm pins used, copper rocker pins used, some mounting flanges have parting ridge, others do not, most say "AC Made in the USA" on the bottom, some do not. If you know exactly what characteristics to look for and you can see the pump in hand, you may be purchasing an original 4656; otherwise, you will probably purchase a vendor's interpretation of an "original" AC 4656 fuel pump.
I have learned that AC fuel pumps parts can be mixed and matched in many different ways, part stamps ground off, re-stamped, steel rocker arm pins used, copper rocker pins used, some mounting flanges have parting ridge, others do not, most say "AC Made in the USA" on the bottom, some do not. If you know exactly what characteristics to look for and you can see the pump in hand, you may be purchasing an original 4656; otherwise, you will probably purchase a vendor's interpretation of an "original" AC 4656 fuel pump.
Comment