HELP!!!! info 1957 fi fuel pump
04-19-2013, 09:13 PM
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HELP!!!! info 1957 fi fuel pump
Hi needing to know is there a special fuel pump for the 1957 fi corvette can not find any information so ant would be appreciated thanks for your time
04-19-2013, 10:05 PM
#2
Race Director
Since the FI units are almost the same since the 1957 Chevrolet cars, I would say the AC #4656 fuel pump which I have a couple left with the rubber hose could/will be correct
04-19-2013, 11:38 PM
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2016 C1 of Year Finalist
The correct fuel pump used on 57 FI Corvettes is a 4346.
The number is stamped on the edge of the flange the 2 mounting screws go through.
This pump has the long screws holding it together and a "AC" on both the top and bottom.
The number is stamped on the edge of the flange the 2 mounting screws go through.
This pump has the long screws holding it together and a "AC" on both the top and bottom.
Last edited by ohiovet; 04-19-2013 at 11:41 PM.
04-20-2013, 09:49 AM
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C2 of Year Finalist (track prepared) 2019
In general what you want is called the "long screw" pump because the pump is held together with very obvious screws of unusual length. It looks very similar to this aftermarket pump:
Inlet and outlet are 180 degrees apart and, for an original pump, are threaded 1/4" FPT.
As the picture suggests you can buy modern replacements which bear a striking similarity to an original '57 FI pump. Google "six valve pump" and you'll see lots of sources. The modern replacements have either 3/8" FPT or 1/2" FPT inlets and outlets.
Jim
Inlet and outlet are 180 degrees apart and, for an original pump, are threaded 1/4" FPT.
As the picture suggests you can buy modern replacements which bear a striking similarity to an original '57 FI pump. Google "six valve pump" and you'll see lots of sources. The modern replacements have either 3/8" FPT or 1/2" FPT inlets and outlets.
Jim
