TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

What size are the TBI fuel lines?

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Old May 23, 2007 | 10:33 PM
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Parts4sale's Avatar
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What size are the TBI fuel lines?

i would like to know what size the return and main fuel line is that is going to the TBI unit, any help would be great! thanks guys!
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Old May 24, 2007 | 11:17 AM
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bilms01's Avatar
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From: Illinois
Car: 89 Firebird
Engine: 350 Ramjet
Transmission: 700R4
Axle/Gears: GM 9 bolt 3:27
Re: What size are the TBI fuel lines?

3/8 and 5/16.

I believe I have a set if you need them took them off my 305 after 350 swap.
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