C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Fuel injector recommendations?

Old Nov 14, 2002 | 09:41 PM
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Default Fuel injector recommendations?

Take a look at my sig for my current mods and then let me know what injectors you think I can get away with. I'm currently running a duty cycle of 95-100% on my stockers, this is not good. Stock LT4 injectors are 28lbs/hr, is anyone running 30's? I don't want to go up to 38's if I don't have to as they're much more expensive.

Thanks,
Sam
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Old Nov 14, 2002 | 10:14 PM
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Default Re: Fuel injector recommendations? (LT4Sam)

You should not be maxing out 28lb/hr injectors, something is up, if those are in fact 28lb injectors. I thought they were more like 22 or 24 stock.
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Old Nov 14, 2002 | 11:40 PM
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Default Re: Fuel injector recommendations? (vader86)

The LT4 injectors are 28lbs/hour. The LT1's are 24.
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Old Nov 15, 2002 | 11:30 AM
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Default Re: Fuel injector recommendations? (Dan Parker '96)

You should not be coming too close to maxing out the stock 28#/hr injectors with your mods. If you really wanted to upgrade though (I would not if I were you), the best option would be the SVO 30#/hr injectors. I am running a set of them and they are at anywhere from 85-95% DC at 6300 rpm on my setup and that is making around 12.5:1 air fuel. You will need a program change to swap injectors.
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Old Nov 15, 2002 | 11:31 AM
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Default Re: Fuel injector recommendations? (LT4Sam)

Easy way to get the DC down, install an adjustable fuel pressure regulator and increase the operating pressure 3-4 psi. ;)
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Old Nov 15, 2002 | 03:27 PM
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Default Re: Fuel injector recommendations? (Vette92)

The pump won't have a problem with the AFPRP? I don't want to ignore the injectors then start maxing out the pump...

Sam
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Old Nov 15, 2002 | 03:47 PM
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Default Re: Fuel injector recommendations? (LT4Sam)

I don't think it will make much difference to the pump if you up the pressure to 48 from 45psi. If there is any doubt, you can always throw a Walbro in there for ~$125 for the part.
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