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leftybass209 · 11-03-2015, 03:45 PM

You should use the 4.5 to 9. Up to 4 sounds really low, like for a 1 or 2bbl. carb. Anything 4 or less, or 8 and up and i'd say you're asking for trouble.

11-03-2015, 03:45 PM	#3
leftybass209 Registered User Join Date: Feb 2011 Location: Modesto, CA Posts: 2,189	Re: fuel pressure regulator question You should use the 4.5 to 9. Up to 4 sounds really low, like for a 1 or 2bbl. carb. Anything 4 or less, or 8 and up and i'd say you're asking for trouble.