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Old September 26th, 2021, 09:55 PM
Jakehaney Jakehaney is offline
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Default 5/16ths or 3/8ths fuel line

I know it’s kind of a stupid question but did the 1966 1/2 ton pickup with the 250 I6 use 5/16th or 3/8th line? I stuck a 5/16ths wrench around the OD of my fuel lines and it was snug. Is it safe to say I have 5/16ths?
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Old September 27th, 2021, 05:37 PM
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Funky61 Funky61 is offline
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Default Re: 5/16ths or 3/8ths fuel line

Sounds logical to me Jakehaney
1961 GMC Suburban 305A Overdrive
1962 GMC Utility 305D
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Old September 30th, 2021, 08:06 AM
Prowbar Prowbar is offline
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Default Re: 5/16ths or 3/8ths fuel line

My 65 3/4 ton has 5/16" lines.
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