This is topic Fuel pressure in forum Tech Talk at Northern California Ford Owners .
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Posted by kuku93 (Member # 14014) on
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Hi i have a 347 stroker naturally aspirated running 42lb injectors asking what fuel pump lph i need? Can anyone help
Posted by Blow_U_In_Reverse (Member # 12298) on
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255lph should be fine.
Posted by Martinna (Member # 12493) on
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A V8 with 42lbs injectors running at 90% duty cycle needs 190 lph or 50gal/hr. This can get you 600HP NA or 500HP boosted. To make 500HP naturally aspirated, you only need to run the injectors at 75% duty cycle. For a V8, that's 160lph. Looks like you want a 190lph pump. Buy the summit house brand pumps. They're Walbros, just like BBK and other brands that charge you more for the logo.
Posted by kuku93 (Member # 14014) on
:
quote:
Originally posted by Martinna:
A V8 with 42lbs injectors running at 90% duty cycle needs 190 lph or 50gal/hr. This can get you 600HP NA or 500HP boosted. To make 500HP naturally aspirated, you only need to run the injectors at 75% duty cycle. For a V8, that's 160lph. Looks like you want a 190lph pump. Buy the summit house brand pumps. They're Walbros, just like BBK and other brands that charge you more for the logo.
Hmmm interesting. Thanks I'll look it up
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