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Injectors for Mild 5.3 Build

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Old May 19, 2011 | 11:10 AM
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Default Injectors for Mild 5.3 Build

Doing a mild 5.3 build with 10.5:1 compression, Elliot Lloyd ported 5.3 heads and a Comp Cams 200/212 .527/.510 117 cam. This is a truck motor that's going to see some mild towing. I'm wondering if the stock 5.3 injectors are upto the task. I have access to a set of 28.8 LS1 injectors. Will these fit the stock 5.3 intake or do I have to have a set of LS1 rails? What is the stock 5.3 injector size? I would like to send the ECM in for a tune and need to work out the injector size before then.
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Old May 19, 2011 | 12:32 PM
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Prolly can reuse the 5.3 injectors. Or can use the truck version 42lb. From 8.1 trucks. I think the stock lq4 injectors can be used also. Idk if there any different from the 5.3s though
I have few sets of lq4/9 injectors if interested
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Old May 19, 2011 | 02:48 PM
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Id do a set of ls2 injectors from a gto or something which are 36lb.
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Old May 19, 2011 | 06:28 PM
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Can I put them in using the Vortec injector rails?
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Old May 19, 2011 | 09:14 PM
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28.8 should be more than enough. They are good to around 450rwhp. I have 430rwhp and I am about 85% duty cycle.
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Old May 19, 2011 | 11:40 PM
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I figured the 28.8s would be a good choice but I need to know if they can be installed on the truck intake without mods to the rail.
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Old May 19, 2011 | 11:50 PM
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As long as the truck rail you have uses the taller EV1 injectors they should work fine.
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Old May 20, 2011 | 04:29 PM
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Thanks!
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