Help with Fuel System design...
07-08-2010, 11:22 AM
#1
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Help with Fuel System design... I am in the process of putting together an LQ4 swap into a 64 Nova.
Are there any good resources for choosing parts for the fuel system components? Like what size fuel line, etc?
I am thinking of running a carb first, but want flexibility to convert to EFI at a later date. Any suggestions on the best way to do that?
Are there any good resources for choosing parts for the fuel system components? Like what size fuel line, etc?
I am thinking of running a carb first, but want flexibility to convert to EFI at a later date. Any suggestions on the best way to do that?
07-08-2010, 11:40 AM
#2
I am in the process of putting together an LQ4 swap into a 64 Nova.
Are there any good resources for choosing parts for the fuel system components? Like what size fuel line, etc?
I am thinking of running a carb first, but want flexibility to convert to EFI at a later date. Any suggestions on the best way to do that?
Are there any good resources for choosing parts for the fuel system components? Like what size fuel line, etc?
I am thinking of running a carb first, but want flexibility to convert to EFI at a later date. Any suggestions on the best way to do that?
https://ls1tech.com/forums/conversio...or-filter.html
https://ls1tech.com/forums/conversio...-fittings.html
https://ls1tech.com/forums/conversio...ilter-fpr.html
https://ls1tech.com/forums/conversio...regulator.html
https://ls1tech.com/forums/conversio...71-nova-4.html
https://ls1tech.com/forums/conversio...ilter-reg.html
07-08-2010, 04:49 PM
#4
07-08-2010, 06:32 PM
#6
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Keep in mind that you will probably want much less fuel pressure than what the corvette filter/reg will let through. Also, depending upon your power goals you might want to step up to a -8AN line (for 500HP+).
07-08-2010, 07:13 PM
#7
Carb vs LSx EFI fuel systems are completely different. Carb is low pressure large diameter designed to pump a large volume of fuel and return the unused portion. LSx is high pressure smaller diameter to send a very consistent high pressure system that uses fuel as it's required
Theres no way to build a carb swap with the C5 regulator
Theres no way to build a carb swap with the C5 regulator
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07-10-2010, 02:41 PM
#8
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What I was thinking is Tanks Inc. in-tank pump, with an inline filter and a regulator from Aeromotive that has swappable springs to change from adjustable 3-20 psi (for carb) and 20-65psi (for EFI)
If I did that then all I would have to do would be to swap the spring in the regulator, and I could use the same setup right?
If I did that then all I would have to do would be to swap the spring in the regulator, and I could use the same setup right?
07-10-2010, 04:00 PM
#9
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If you are going with a carb you can just use a in-line pump such as a Holley Blue pump and be adequate for the bare minimum. A carb'd LS/Vortec is no different than the SBC style electric fuel pump requirements. For line, 3/8" or -6AN is usually enough for a stock displacement engine that is naturally aspirated.
The Tanks Inc setup sounds good if it is dual purpose capable (carb/EFI), I'm not that familiar with it. Seems it will be returning a ton of unused fuel to the tank if you use a EFI pump at carb fuel pressure.
The Tanks Inc setup sounds good if it is dual purpose capable (carb/EFI), I'm not that familiar with it. Seems it will be returning a ton of unused fuel to the tank if you use a EFI pump at carb fuel pressure.
