V6 Discussion and questions about the base carbureted or MPFI V6's and the rare SFI Turbo V6.

injector upgrade

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Old 06-06-2008, 06:34 PM
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Car: 88 IROC Z
Engine: 5.7
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injector upgrade

i got some 4th gen V6 injectors and wondering what #lbs are they and whould they fit on my 2.8 do i have to upgrade anything? would i waste more gas?
Old 06-06-2008, 07:53 PM
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Re: injector upgrade

3.4 or 3.8? Either way they are too big.
Old 06-06-2008, 07:54 PM
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Car: '87 Camaro / '87 Chevy K10
Engine: 3.4L MPFI (soon) / 5.7L TBI
Transmission: 700R4 / 700R4
Axle/Gears: 3.42 / 3.73
Re: injector upgrade

Even if they're the 17lb from the 3.4, they're too big. Your ECM would need to be adjusted to handle them. You'd just be spewing more gas.
Old 06-06-2008, 09:25 PM
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Re: injector upgrade

The biggest that you should run are the 3.1 injectors. I am running them and car runs good, slightly rich though.
Old 06-06-2008, 10:06 PM
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Re: injector upgrade

ok i think im going with the 3.1 injectors. thanks for the help
Old 06-07-2008, 01:05 AM
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Re: injector upgrade

They aren't much of an upgrade. I only have those cause I needed some new injectors ASAP and the JY only had 3.1 Fbodies. Look into the Ford F1ZE injectors.
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