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LQ4 injector recomendation

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Old Oct 1, 2012 | 02:35 PM
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Default LQ4 injector recomendation
I have an LQ4 with a TSP 228R cam and the FAST LSXRT intake and 102mm TB in an older muscle car.I am using the 243 heads for a bump in compression.I will have 1 3/4 long tube headers.In searching I see the stock injectors are likely to small to be efficient.Harness ends not critical as I have not bought a harness yet. What is the flow rate that would be required for 400-450 hp.I do also have the FAST rails so I assume I have some choices on injectors.i have heard the 8.1 injector is a inexpencive upgrade.
Last edited by Nova 404; Oct 1, 2012 at 03:09 PM.
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Old Oct 5, 2012 | 07:52 PM
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I'd like to know this as well.
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Old Oct 6, 2012 | 07:10 AM
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https://ls1tech.com/forums/fueling-i...ump-chart.html
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Old Oct 7, 2012 | 10:29 PM
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Does anybody know if all 8.1 njectors are the same?Are there any more desiable than others? I see different part numbers offered or sale
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Old Oct 8, 2012 | 10:31 AM
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Originally Posted by Nova 404
Does anybody know if all 8.1 njectors are the same?Are there any more desiable than others? I see different part numbers offered or sale
there are two 8.1 the marine injector and the truck injector. the trucks are 36@58psi and the marine are 42@58.. both identical bodies and plugs
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