10-10-2013, 08:58 PM
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Senior Club Cobra Member
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Join Date: Sep 2000
Location: Holderness, NH, US of A,
NH
Cobra Make, Engine: CSX 4772 old iron FE
Posts: 5,499
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Not Ranked
It's all about how much HP you want to support and for how long. A 3/8" or -6AN will feed 500HP unless it's turning 8K on a banked oval for an hour.
The other priority which it sounds like you are addressing is ethanol proof line.
The pump/s in the trunk typically just run reserve supply anyway.
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