fuel line help

[beto101]

I'm installing a 5.3 in my blazer. Gonna use the stock fuel lines from donor truck. I'm planning on cutting and flaring into stock fuel line in the k5. Anyone know what size fittings I need? What type of flare is required? Any help is good help

 

[wazzabie]

What year? For 78 you need a bubble flair. Cheap way to make this is two use the double flair set. Double the length that is says to use and then press it. You will see the double flair form. Main line is 3/8

 

[beto101]

I'm working on an 80 blazer. I'm trying to use all stock parts