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Old 02-05-2013, 09:06 AM
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lg1969 lg1969 is offline
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Holley 390 only require no more then 4.5 psi of fuel. Go above it and the float valve will be forced open. you may have to replace the needle/seat assy. that can handle higher Fuel pressure. I'm using two Holley 390's on my Tunnel ram setup.
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