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Fuel pump questions

TravisLBlair12345
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TravisLBlair12345 New Member

TravisLBlair12345

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Ok, so the suspect vehicle is a 2013 Silverado 4x4 with the 5.3l lc9. I am doing a dod/vvt delete on it and turboing it. The cam I am using is a Howards 190245-12 cam (.561/.578 duration @ .050. 222/225) i am installing the 660 lift dual valve springs from BTR, arp head studs, aftermarket steam lines and 80lb SD injectors. My question is how do you determine the proper size fuel pump? Everything I've read suggest a 485lph pump. Any help would be appreciated.  TIA

CamGTP Senior Enthusiast

CamGTP

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Posted

Pump size all depends on power goals.

 

The stock flex fuel pump on gasoline can do around 500hp give or take. Going to a 340LPH or 450LPH would be the next step up.

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swathdiver Senior Enthusiast

swathdiver

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That camshaft is going to shift your powerband way up there, losing tons of torque down low.  What size turbocharger are you going to use?  

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