66 Sat
Well-Known Member
I've recently replaced my Holley carburetor with an Edelbrock and ended up with a fairly long piece of rubber fuel line from the pump to the carburetor. My small block car has 5/16" fuel line as opposed to 3/8".
My confusion arose with the inside diameter and outside diameter of these lines when I replaced the long rubber line with a section of hard line. The rubber fuel line is 5/16" Inside Diameter, which slips nicely over the hard line from the pump and also the fuel filter barbs which are 5/16" Outside Diameter. The Inside Diameter is only about 1/4".
Is this normal for these cars? Are the 5/16" lines measured as Outside Diameter?
As it stands now the diameter is changing 3 or 4 times, every time it transitions from hard to rubber line or from rubber line to fuel filter.
The car runs fine, I was just wondering.
My confusion arose with the inside diameter and outside diameter of these lines when I replaced the long rubber line with a section of hard line. The rubber fuel line is 5/16" Inside Diameter, which slips nicely over the hard line from the pump and also the fuel filter barbs which are 5/16" Outside Diameter. The Inside Diameter is only about 1/4".
Is this normal for these cars? Are the 5/16" lines measured as Outside Diameter?
As it stands now the diameter is changing 3 or 4 times, every time it transitions from hard to rubber line or from rubber line to fuel filter.
The car runs fine, I was just wondering.