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73-87 Chevy _ GMC Trucks => Fuel Systems and Drivability => Topic started by: bigred on February 10, 2010, 04:23:43 pm

Title: fuel line size?
Post by: bigred on February 10, 2010, 04:23:43 pm

What a size are the supply and return fuel lines for 87 tbi engine? 3/8 and 5/16? thanks

Title: Re: fuel line size?
Post by: Captkaos on February 10, 2010, 05:47:16 pm

yes.

Title: Re: fuel line size?
Post by: VileZambonie on February 10, 2010, 06:29:16 pm

Which lines do you need? I have the GM part #'s for the TBI flex lines

Title: Re: fuel line size?
Post by: bigred on February 11, 2010, 12:13:32 am

I have a short section of rubber hose just before you get to the tbi. I added a fuel pressure guage a few yrs ago ended up cutting the line and spliced with it with rubber. I"m getting ready to put  a new engine in and since it will use a higher flow fuel pump I was going to couple the fuel supply line back together with steel line. Iknow should have did that to begin with ha!

Title: Re: fuel line size?
Post by: VileZambonie on February 11, 2010, 10:35:56 am

If you want the GM part #'s they are 15548993 Return and 15548991 Feed