what size injectors?

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Nov 12, 2008 | 09:16 AM

adam120674

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what size injectors?

What size fuel injectors do I need to upgrade to on a stock ls1 running 8psi boost? Will I need to upgrade the fuel pump and fuel rails also? The A/R on the turbo is a .50. I donot know what the exhast side is. Thanks for any help

Nov 12, 2008 | 09:25 AM

BLOWNBLUEZ06

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From: Forney, Texas

42's should cut it, but I would get 60's. They'll give you room to grow.

Nov 12, 2008 | 02:57 PM

FICINJECTORS

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From: Cumming, Ga

60's would be the route to go for sure.

I have the brand new Siemens 60lb injectors which will drop right in, flow matched, viton o-rings installed for $55 each.

Nov 13, 2008 | 03:38 PM

NAVY

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what about 850rwhp f1c 402 c.i.d What size fuel injectors do I need ?

Nov 13, 2008 | 06:58 PM

FICINJECTORS

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From: Cumming, Ga

For that power level you will need to go low impedance 65lb Delphi, or the high impedance 75lb Siemens.

I have both, $79.95 each for the Siemens, $69 each for the Delphi.

But keep in mind, you will need an aftermarket driver box or an aftermarket ECM to use the low impedance Delphi's.