Vortec 305 fuel pressure

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nauju

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Is 58 psi good enough for a vortec 305 when the engine is idling, key on engine off starts at 35 psi and when I cycle it again it slowly builds up pressure is this normal?
 

Nad_Yvalhosert

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Its low.
60-66 is the spec for the Vortec small block.
Im concerned at the slow buildup at "key-on". Change the fuel filter and retest the pressure.
 

Schurkey

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IF (big IF) the pressure isn't improved by the fresh fuel filter, you'd better verify the power supply to the pump. A pump starving for electrical power could have low pressure, or build pressure slowly.

But that's not the only potential cause of low 'n' slow pressure.
 
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