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Rail type fi plumbing

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Old Feb 16, 2013 | 12:05 AM
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Burning Brakes
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Default Rail type fi plumbing

Need help here please, Im starting to plumb up my Big block Fuel injected blown engine. But I cant find a good place to put the Y block or the return pressure regulator.
If you have a rail type fuel injected vette, maybe a supercharger, I need to see how you plumbed it and where you mounted the Y block, reg. and lines. not many places to mount this stuff on a C3.

Engine Specs;496ci
BDS blower
BDS electronic fuel injection
Look at this pic of the green truck on my photobucket, its like my setup but I think its plumbed wrong at the Y block and regulator.
http://s583.beta.photobucket.com/

Last edited by TOM B1; Feb 16, 2013 at 12:24 AM.
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Old Feb 16, 2013 | 07:00 PM
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No One has pics?
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Old Feb 16, 2013 | 07:13 PM
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I have an EFI 454, but there's no Y-block. The rails have cross over lines. The regulator is mounted to the pass side rail. I can post pics, but not sure it will help?
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Old Feb 16, 2013 | 07:47 PM
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Use a y-block or crossover line to feed the fuel rails. Come out of the rails and into the regulator. Return out the bottom of the reg back to the tank.

Rob
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Old Feb 16, 2013 | 09:37 PM
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Sounds like its easy to do, I have a Y block but cant find anywhere to mount it and the lines coming out of the Y hit everything.
So I can use a T fitting in both the fuel intake rails and one in the return side of the rails, So this wont starve for fuel or restict the return?
If I can do away with the Y block and just add 2 T fittings that will clean up things alot.
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Old Feb 16, 2013 | 09:57 PM
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Depends on your power level. Mine makes a little over 500 hp. It has 2x 3/8" cross-overs that use 90s and T-fittings. At one point I had the fuel tables rich enough to blow black smoke at 6000 rpm WOT so it can fuel more than what I have. But if you're building one of those 1000+ hp deals you may want to call BDS and ask their advice. Another one to call would be Aeromotive as they are the big name in EFI fuel systems.
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