[C2] Hard fuel line, fuel pump to carb question

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Mar 27, 2026 | 05:03 PM

bspina

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Hard fuel line, fuel pump to carb question

I want to replace a braided fuel hose with 5/16” OE steel hard fuel line from stock fuel pump to a single feed Holley 4bbl 4160 carb
Can anyone help me figure out what fittings I need for the carb fuel inlet?
Some sources say it’s 7/8”-20 and others say 9/16”-24.. and how to attach the 5/16” hard line to it?

Mar 27, 2026 | 05:22 PM

Nowhere Man

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From: Sitting in his Nowhere land Hanover Pa

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You might be better off getting the 64-65 L76 and L79 set up

Mar 27, 2026 | 06:15 PM

bspina

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Sorry, should’ve stated it’s a 1966 base 327/300.
Trying to keep it as stock as possible… but not NCRS level car.

Mar 27, 2026 | 06:26 PM

Nowhere Man

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From: Sitting in his Nowhere land Hanover Pa

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Then your going to need to source the correct fuel bowl

Mar 27, 2026 | 06:54 PM

bspina

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Do you mean a fuel bowl for a Holley 3367 which is the correct Holley for a 66 327/300 and put it on the 4160?
or is there a fuel bowl for a 4160 that can accept a 5/16 hard fuel line?