1967 Barracuda fuel lines

[Confusedcuda]

Hello, I was pulling out my old gas tank today and I noticed, that I have a 3/8'' fuel sending unit, a 3/8'' rubber fuel line that goes from the sending unit to a 5/16'' steel line that goes to a 3/8'' rubber fuel line at the firewall. Then the 3/8'' rubber line goes to my mech. fuel pump. From the fuel pump to the front of the carb, is a 5/16'' steel fuel line that goes to a 3/8'' rubber line that goes to the carb. My question is it okay to make these drop downs in size from the fuel sending unit to the carb. The one that I really wonder about is the steel line from the back of car to the font. It is all now pushing a 340 instead of 273? Thanks!

 

[MobileCustoms]

I have the same setup in my 67 and it seems to be keeping up fine so far. have only had the car since October and only got about a month of any driving in before the snow came.

 

[Confusedcuda]

Cool, anybody else? Mine has ran fine foe a couple of years, but I was just wondering if I was starving it.

 

[Russ H]

Cool, anybody else? Mine has ran fine foe a couple of years, but I was just wondering if I was starving it.

You're good with the 5/16 metal line. 5/16 was original equipment for the 340 and I believe the 383 A-Body cars.

Russ

 

[Rob Eppler]

depending on rear axle ratio, 3.91 or more, you will have fuel delivery problems with high rpm shifts. general cruzing..probably not.

 

[Rob Eppler]

my 383 "S" Barracuda, 4.10, did not like the 5/16 fuel line! 3/8, worked well, now 1/2 aluminum line and -8 works real well!