Scott Heidt
03-22-2004, 11:51 AM
Hey Guys. Ok here is the rundown.
Just installed a new 502 long block ( I was told this engine requires an electric fuel pump), 425 hp, stock cam, rectangular ported heads, Holley 750 with a Holley intake manifold. The fuel pump that was sent with the engine isn't cuttin it. I need to order a new one. I went online and saw that Holley has a marine fuel pump that might work, but the GPH seems high for what I need. The lowest one I saw was 67 gph at 5psi and the preset is 7 psi. My thoughts were to use that and get a fuel pressure regulator from Holley with a 4 1/2 -9 psi range. Does psi relate to fuel flow (ie. higer psi = higher gph). Does a regulator put a strain on the pump by restricting flow?
I am not familiar with all the aspects of electric fuel pumps and the best way to regulate fuel flow properlly so the engine isn't starving for fuel. I am at work today, but will check the boards before 5:00 pm. I need to get this worked out before The Mount Dora gathering this weekend. Thanks!
Just installed a new 502 long block ( I was told this engine requires an electric fuel pump), 425 hp, stock cam, rectangular ported heads, Holley 750 with a Holley intake manifold. The fuel pump that was sent with the engine isn't cuttin it. I need to order a new one. I went online and saw that Holley has a marine fuel pump that might work, but the GPH seems high for what I need. The lowest one I saw was 67 gph at 5psi and the preset is 7 psi. My thoughts were to use that and get a fuel pressure regulator from Holley with a 4 1/2 -9 psi range. Does psi relate to fuel flow (ie. higer psi = higher gph). Does a regulator put a strain on the pump by restricting flow?
I am not familiar with all the aspects of electric fuel pumps and the best way to regulate fuel flow properlly so the engine isn't starving for fuel. I am at work today, but will check the boards before 5:00 pm. I need to get this worked out before The Mount Dora gathering this weekend. Thanks!