Hi guys, a question for all you guys running stock fuel lines with big hp. whats the max whp acheived with stock fuel lines and upgraded fuel pumps,

ive called a dozen local performance shops 11 said upgrade the lines for more power but 1 shop who specialises more with fuel systems said dont bother changing unless your after 1000hp or more.

im running standard lines with 1 walbro pump and t61 masterpower turbo @1.3bar, i need to upgrade my fuel system to support the new t-64 masterpower @1.5bar so ive installed a second walbro intank. not sure if i can just t into the one line or run a seperate line to the motor for the new pump.

Has anybody had success with the single stock fuel line? ie 500-600whp

 

i did just went to a dual walbro set up, i ran a seperate line . one fuel pump for each rail, i think this way would be much better than using a tee and having only one line for two pumps

 

im hopeing it doesnt come to that. getting under the car to put in a new fuel line isnt a lot fun.

 

The stock lines are the same size as AN -6, which is good for about 550-600HP. The Walbro pump will do 400HP easily, so if you have two you'll be fine for almost anything.

 

Good man! thats the answer i was looking for. thanx a bunch!