My problem, when changing the fuel pump the line that goes from the sender to the rubber line got bent when I was trying to free the fitting.

My solution, drill out the hard line and put a bulkhead fitting, preferably -6an.

My question, I was wondering if I replaced my whole feed line from the bulkhead fitting to the filter with -6an will the pump be able to keep the line pressurized since it is bigger then the stock line?

My research on the Tuners site has shown me that a -6an line is about 2x bigger the the stock line so a 255walbro might not be able to keep the pressure up so if I were to get one of those new Jay Racing Pro Series PT341 Drop-in Fuel Pumps would that alone be able to keep the pressure up.

Also I know there would be no point to it but what about replacing the whole line with -4an line with the regular 255? Not much of an upgrade but more of a solution. -3an would be stock size according to the quote below.

References:

Jafro said:

The lines delivering the fuel on the factory system are called 5/16" lines, but the outer diameter of those lines is only used as a point of reference when you're standing at the parts counter. Their inner diameter is about 3/16". Since AN lines are spec'd by their inner diameter, -6 is about twice the size of the factory lines.
http://www.dsmtuners.com/forums/bolt-tech/341786-fuel-system-upgrade.html

Click to expand...

AN Fitting Thread Size Chart


Thanks