LT1-LT4 Modifications 1993-97 Gen II Small Block V8

FUel Questions??

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Old Mar 24, 2010 | 09:36 PM
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WARDOG's Avatar
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Default FUel Questions??

Hey guys i have a 97 t/a full bolt ons cc503, fresh rebuilt engine and transmission. My car is tuned for stock injectors and i would like to add 30lb injectors.

1. Im about to replace my stock 140k fuel pump with a walbro 255 hp, Do i NEED an Ajustable fuel pressure regulator? Or would a New Delphi stocker will do for my power level?
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Old Mar 24, 2010 | 09:47 PM
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You will need a tune for the 30lb inj. and an Adj. FPR is not NEEDED.
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Old Mar 24, 2010 | 09:55 PM
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OK thanks , ill just stick with the stock injectors for now. Im installing the walbro 255 hp, new Delphi fpr, and new front Denso Oxygen sensors for now.
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Old Mar 24, 2010 | 10:04 PM
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The stock fuel pressure regulator will work fine. There are several very high HP builds using the stocker.

Like sepno77 mentioned, you're going to need a tune for the injectors, but in all likelihood you won't NEED THEM. The 503 is fed all the time by stock injectors just fine. Save your money and put it elsewhere.
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