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fuel line fitting size?

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Old 08-01-2012, 10:34 PM
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Car: 1990 firbird formula
Engine: 355ci
Transmission: t56 spec3+ cluch
Axle/Gears: 9 bolt disc brake 2.77
fuel line fitting size?

I am putting a carb on my car and have been trying to figure out what size the fittings on the fuel lines are and what size lines i would need looking to use steel braided line i did a search on here and all i could fined was the tpi line size so i googeled it and found a site saying the inlet line was a 3/8 and the return was a 5/16 ? is this right and if so what size line would i need?

thanks for the help
Old 08-03-2012, 11:01 AM
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Re: fuel line fitting size?

http://z28boy.cz28.com/

Not all on this site is accurrate but above prob is...
Old 08-03-2012, 11:08 AM
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Re: fuel line fitting size?

click on tbi tech. then fuel line info. and you'll see the information you need to convert to carburetor.

and i am talking about on the site listed by Ronny
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