Engine swap fuel filter
Thread Starter
Pro
Joined: Dec 2015
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From: colo
Engine swap fuel filter
I am installing a gen V LT1 in my 1978 . I have replaced the fuel tank already , and forgot to figure out where to install a fuel filter in the line. It is now too difficult to reach the fuel lines, so I would like to know if it would be Ok to install a filter between my fuel regulator on the firewall and the connector to the high pressure pump in the engine. I have enough fuel hose length to splice in AN6 fittings for both sides of the filter. It would also make it much easier to replace it in the future.
Ed
Ed
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Joined: May 2006
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I am installing a gen V LT1 in my 1978 . I have replaced the fuel tank already , and forgot to figure out where to install a fuel filter in the line. It is now too difficult to reach the fuel lines, so I would like to know if it would be Ok to install a filter between my fuel regulator on the firewall and the connector to the high pressure pump in the engine. I have enough fuel hose length to splice in AN6 fittings for both sides of the filter. It would also make it much easier to replace it in the future.
Ed
Ed
Thread Starter
Pro
Joined: Dec 2015
Posts: 578
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From: colo
Maybe it should. I'll have to look for a place to install it before the regulator. I figured putting it in the engine compartment would make replacement easier, and would filter anything coming from my 45 year old fuel lines also..
Thanks
Thanks
Race Director
Joined: Mar 2016
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From: Napa Valley California
Some fuel filters are designed to be installed before the pump and some are designed to be installed after the pump.
If it doesn’t state in the instructions I would call the manufacturer.
I would think either way, you would want to install it before the regulator.
Are you running a dead head or bypass regulator?
If it doesn’t state in the instructions I would call the manufacturer.
I would think either way, you would want to install it before the regulator.
Are you running a dead head or bypass regulator?
Thread Starter
Pro
Joined: Dec 2015
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From: colo
I have one that has the return line on it, so any fuel not being used is returned to the tank away from the pump pick up to cool the fuel before cycling again. I think I have found a place to install the filter on the firewall before the regulator.
Thanks for all the help .This forum has the best people on it .
Ed
Thanks for all the help .This forum has the best people on it .
Ed
Drifting
Joined: Oct 2020
Posts: 1,567
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From: Wisconsin
Gen V LT1 fueling requirements have been changing the last few years (from GM). They were originally on the order of 70-72 psi and 45 GPH, not sure what they are these days. Might be worth checking into, if you haven’t already.
Thread Starter
Pro
Joined: Dec 2015
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From: colo
When I started this the requirement was 70 -72 psi , but I read a lot of people were running 58 psi with no problems. My fuel pump is supposed to push up to 90, but with the original lines and length I am sure it drops. My regulator will go up to 90 , but I'll play with it once I actually get it fired up. It's just so weird that there is an internal pump in the engine that boosts it before it goes into the cylinders.
Race Director
Joined: Mar 2017
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From: Virginia
The C5 combo fuel-filter/regulator puts out 58 psi. I don't know if there is a Gen V equivalent to that part.
You should still have access to your fuel sending unit, even without dropping the tank. A piece of Holley Hydramat can double as a fuel filter, in addition to the other benefits.
You should still have access to your fuel sending unit, even without dropping the tank. A piece of Holley Hydramat can double as a fuel filter, in addition to the other benefits.
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