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Old May 28, 2012 | 11:08 AM
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Default ls3 stock injector

If I'm completely na but worked heads and a pretty decent size cam my question is will my stock injectors be ok??? Or if I can should I upgrade to the zr1 ls9 injectors which are 52 lb??? Basically my question is what hp are the stock injectors good to and is there any potential gain in upgrading
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Old May 29, 2012 | 06:44 PM
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Stock LS3 injectors are pretty oversized for an LS3...they're actually LS7 injectors...you'll probably be ok with them.
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Old Jun 2, 2012 | 07:08 AM
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LS3/LS7 injectors are good well into the 400+ rwhp range. Dont use LS9s, they spray fuel at an angle because the have a different location on the supercharger. So they angle the spray to shoot it back at the valve. When you add these to a standard LS engine, your just going to shoot the fuel into the port wall instead of at the valve.
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Old Jun 2, 2012 | 07:44 AM
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Good to know sir!!

You can also get them resized to a higher flow rate and not have to spend 4-8 hundred on a new set. Just my .2 though
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Old Jun 2, 2012 | 10:31 AM
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Thanks guys
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Old Jun 2, 2012 | 12:27 PM
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FAST has LS3/LS7 injectors in 50/65/85 lb/hr, Im sure most of the vendors here have them avaliable!

http://www.fuelairspark.com/Products...rs'-1.aspx
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