3/8 fuel line - The 1947 - Present Chevrolet & GMC Truck Message Board Network

69trk · 12-10-2008, 07:59 PM

I still have my tank behind the seat and the fuel line is only 3/8. I have 3/8 line to the inlet side of my fuel pump, then i changed it on the exit side to a 8 AN up to the regulator. Later when i install my new tank under the bed, i'll run 8AN all the way to the tank. I was told that the 3/8 fuel line is only good for about 465hp. If that's the case how come my fuel pressure still stays at 6.5psi going down the track? He said that i'm not getting enough volume which is costing me some power. Could this be true?

12-10-2008, 07:59 PM	#1
69trk Registered User Join Date: Oct 2006 Location: bridgecreek ok. Posts: 1,214	3/8 fuel line I still have my tank behind the seat and the fuel line is only 3/8. I have 3/8 line to the inlet side of my fuel pump, then i changed it on the exit side to a 8 AN up to the regulator. Later when i install my new tank under the bed, i'll run 8AN all the way to the tank. I was told that the 3/8 fuel line is only good for about 465hp. If that's the case how come my fuel pressure still stays at 6.5psi going down the track? He said that i'm not getting enough volume which is costing me some power. Could this be true? __________________ http://67-72chevytrucks.com/vboard/s...d.php?t=494388 431 big block times, changed to a 6.0 ls with turbo 1.58- 60' 7.18- 1/8th mile@95.18 11.37- 1/4 @115.81 Last edited by 69trk; 12-10-2008 at 09:24 PM.



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