What size fittings for stock rails?

[Boston GN]

I was thinking of going with an external aeromotive pump and swapping all my fuel lines over to braided lines. What size feed and return with I need if I keep the stock rails?

TIA

 

[Nick Micale]

Take your fuel rail and modify it. We run -10 to a "Y" at the front of the engine. From this use 2 lines of -6 to each side of the fuel rail. This requires cutting off the regulator. [Should have another reg anyway.] Mount this on firewall or fender.

The fuel rail needs to have 2 fittings welded on the front to accept -6 lines from the "Y". On the rear of the rail another -6 needs to be welded for the return line to the reg.

Presume you are doing this in planning for 700+ HP? Unless you are into serious 10 sec running, stock lines work ok. For your external pump, you must also have a sump welded in or a fuel cell.

 

[Mac in SD]

The alternative is to use -8 feed line, and use your stock feed line as the return. You can get adapter fittings for the o-ring Saginaw fittings on the fuel rail to -8 AN male. Not sure if you really need to sump the tank and run -10 lines...maybe for an Aeromotive, but I've got dual Walbro 392's with dual (fabricated) pickups feeding a -8 line to the rail. Flows like a firehose. Nice and quiet, too. I figure they'll flow around 800 pph at 70 psi, hotwired. That oughta do it.

Neal Steward runs an in-tank double pumper using the stock lines and rail, and it got him to 10.30's @ 136.

 

[galoush]

fittings

Check Ramchargers , i got those fittings from Modern Muscle car about 2 years back they may still carry them.