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Drivetrain => 1964-1967 300CI Engine => Topic started by: BuickGS65 on October 21, 2024, 01:14:25 PM

Title: 300 V8 rubber fuel line size?
Post by: BuickGS65 on October 21, 2024, 01:14:25 PM
What is the correct rubber fuel line size (i.e. after the fuel pump, heading to the carburetor) for the 300 V8? 5/16" or 3/8"?

Same size for both 2bbl and 4bbl carbs?

I was unable to find this in the service manual or the parts book.

Thanks for any info.

Dan
Title: Re: 300 V8 rubber fuel line size?
Post by: Aussie Skylark on October 21, 2024, 05:02:57 PM
Hi Dan,
 
I cannot remember off the top of my head, can have a look tonight when I'm home and report back.

Regards

Marcus
Title: Re: 300 V8 rubber fuel line size?
Post by: telriv on October 21, 2024, 06:52:55 PM
5/16ths.

Tom T.
Title: Re: 300 V8 rubber fuel line size?
Post by: BuickGS65 on October 22, 2024, 11:43:09 AM
Quote from: telriv on October 21, 2024, 06:52:55 PM
5/16ths.

5/16" was the "universal" OEM fuel line size for 1965 Buicks, whether 2bbl, 4bbl, 300, 401, hard line or rubber line - were ALL 5/16" in 1965, correct?
Title: Re: 300 V8 rubber fuel line size?
Post by: BuickGS65 on October 26, 2024, 12:18:25 PM
Quote from: BuickGS65 on October 22, 2024, 11:43:09 AM
Quote from: telriv on October 21, 2024, 06:52:55 PM
5/16ths.

5/16" was the "universal" OEM fuel line size for 1965 Buicks, whether 2bbl, 4bbl, 300, 401, hard line or rubber line - were ALL 5/16" in 1965, correct?

Bump. Is 5/16 fuel line the universal size for ALL 1965 Buick models and engine sizes? Thanks
Title: Re: rubber fuel line size 5/16 for ALL engine sizes in 1965?
Post by: BuickGS65 on January 10, 2025, 02:38:14 PM
Quote from: BuickGS65 on October 26, 2024, 12:18:25 PM
Quote from: BuickGS65 on October 22, 2024, 11:43:09 AM
Quote from: telriv on October 21, 2024, 06:52:55 PM
5/16ths.

5/16" was the "universal" OEM fuel line size for 1965 Buicks, whether 2bbl, 4bbl, 300, 401, hard line or rubber line - were ALL 5/16" in 1965, correct?

Bump. Is 5/16 fuel line the universal size for ALL 1965 Buick models and engine sizes? Thanks

Just wanted to triple confirm that 5/16 is the correct rubber fuel line size for ALL 65 Buick models regardless of engine size (300 all the way to 401/425). Is that correct? Thanks