Hello again.
I am trying to come up with my fuel system. I like the dual pump setup, and have a few questions.

Is there any reason NOT to run the supply line from each pump up to each rail in parallel? By this I mean one pump supply direct to one rail, the other pump to the other rail.
Then on the other end of the rail mount the regulator and return?

My other question is, what do these connectors fit? It is supposed to be a 93-97 LT1 Fuel Rail to 6 AN fitting, but for the life of me I can figure out where the non-AN end goes.

http://tpiparts.net/inc/sdetail/4892



Now, I saw the thread where someone used easy off to remove the annodized finish, sand the end of the rail and threads off of the AN adapter. Wouldn't these work and save some time?

http://store.summitracing.com/partde...5&autoview=sku



Its only $4.95 and is 8-AN size. I am getting my TIG torch out and changing tanks for aluminum.

The other route I looked at is one several guys are doing, with the HP Walbro in tank pump and the racetronix wire kit (or the whole kit from racetronix) that has the BAP (boost a pump) connectors already in it.

I plan on having (flywheel) 400 HP N/A, ~600 HP ATI Procharged, and maybe eventually try a 150 shot of N2O on top of that, so I need a pump system that can support around 750 flywheel HP.

Would the walbro and BAP fit my needs easily? I do NOT want to deal with the fuel system more than once, and it will be easy to run bigger lines, mount an external pump if I have to, etc while the engine/transmission/driveshaft and rear axle are out of the car.

My son's teenage friends say my car sounds like a truck. They all run ricers with the fart can exhaust. I intend to 'enlighten' them sometime this summer when I am done.

 

They clip on to the factory quick disconnects.

 

Not clear from that if you are proposing to provide two independant FPR's, or combine the outlets of the two rails into a single FPR????

Letting each pump supply a separate rail means you have two lines running to the front of the car, when you only need one. So there's extra expense for something that offers no real benefits, and MAY cause problems. Adding independant FPR's (if that's what you meant) would also added unecessary extra cost for two regulators and an extra return line.

I'd wonder if the pressure control, being handled by a single FPR downstream of the rails, would get a little squirrely causing a slight difference in pressure between the rails, or an intermittent surging. Not sure this would happen, but it seems like a possibility that would be avoided with a single line. Combining the two pump discharges at the tank, and running a single line forward, splitting with a "tee" to the rails would insure that both rails are at identical pressure and that the pressure is stable. Obviously, running two FPR's and keeping the systems totally independant to each rail would offer the risk of different pressure = different injector flows and each side.

 

aka95ta has a very overkill fuel system you may like ask him for pics. it looks very sexy