HOLLEY FUEL SYSTEM SELECTION CHART
HOLLEY fuel SYSTEM SELECTION CHARTPart NumberCompatible up to Flow at Rated PSI and Recommendations for Peak PerformanceHolley Recommendations for Peak PerformanceMax HP*Pump Fitting SizeMinimum Recommended Line SizeFuel Filter (Carbureted) fuel Filter ( fuel injected)Recommended Regulator Max Amp DrawNaturally AspiratedForced InductionInletOutletInletOutletReturnPre PostPrePostCarbEFI12-426NoStreetGas/Dies el/Alcohol/E-8525 @ 3 PSI300N/A1/8 -271/8 - 275/165/16N/AIncluded162-524N/AN/AN/AN/A 2 Amps12-427NoStreetGas/Diesel/Alcohol/E-8 532 @ 5 PSI400N/A1/8 - 271/8 - 275/165/16N/AIncluded162-524N/AN/AN/AN/A 2 Amps12-428NoStreetGas/Diesel/Alcohol/E-8 534 @ 7 PSI400N/A1/8 - 271/8 - 275/165/16N/AIncluded162-524N/AN/AN/AN/A 2 AmpsThe pumps below have an internal bypass. A demand style or bypass style regulator can be used if @ 4 PSI425N/A3/8 NPT3/8 NPT3/83/8N/A162-551162-562N/AN/AN/AN/A3 Amps12-802-1NoStreet/StripGasoline95 @ 7PSI550N/A3/8 NPT3/8 NPT3/8 or -6AN3/8 or -6ANN/A162-553162-563N/AN/A12-803/12-840 N/A4 Amps12-812-1NoStreet/StripGasoline95 @ 7PSI550N/A3/8 NPT3/8 NPT3/8 or -6AN3/8 or -6AN3/8 or -6AN**162-553162-563N/AN/A12-803/12-840 or 12-803BP/12-841N/A4 Amps12-815-1NoStreet/StripGasoline/ Methanol120 @ 9PSI750N/A3/8 NPT3/8 NPT1/2 or -8AN3/8 or -6AN3/8 or -6AN**162-553162-563N/AN/A12-704/12-843 or
Individual systems will vary based on fuel system design, regulator type, fuel cell location, launch G’s etc. ** Return line only needed if using a By-Pass regulator such as the 12 …
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