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8.1 liter injectors into a 5.3 liter engine

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Old 09-10-2008, 08:48 PM
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Originally Posted by southern_chevy
Well that is about what mine is now around 10x and I have some 8.1L injectors on the way. From what I have gathered most say if you are in the 90's and higher it is a good thing to change them. I am waiting to see how much they drop my IDC.
hey if you wouldnt mind, let me know if you see any improvements from the injector swap! Post up a thread when they go in
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Old 09-10-2008, 08:54 PM
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Originally Posted by 00ChevyScott
When me and BlackGMC logged my truck after the cam swap, I was running about 105% IDC at high RPMs. You think it'd be worth swapping injectors yet?
Yes, you won't gain any power unless it's going lean, but it will be safer and easier on your injectors.
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Old 09-10-2008, 09:51 PM
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I was told 85%+ IDC and they are considered Maxed out..

my 44# injectors are maxed out.. so I'm waitin to save up some money for some 65#s
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Old 09-10-2008, 09:52 PM
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I run 8.1L injectors. I got them for $24 plus shipping off ebay. If you're not in a hurry you can probably find them for under $100.
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Old 09-10-2008, 10:01 PM
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Will do man, ya I got mine from ebay as well. Hey randomhero what kinda IDC are you seeing?
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Old 09-10-2008, 10:14 PM
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Originally Posted by southern_chevy
Will do man, ya I got mine from ebay as well. Hey randomhero what kinda IDC are you seeing?
I haven't logged in a while but I believe it was in the 70s with the mods in my sig.
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Old 09-10-2008, 10:17 PM
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Good deal I was just hoping that the 8.1L injectors would be big enough to get me back below mid 80's.
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Old 09-10-2008, 11:30 PM
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Originally Posted by nonnieselman
I was told 85%+ IDC and they are considered Maxed out..

my 44# injectors are maxed out.. so I'm waitin to save up some money for some 65#s
shoot me a PM about those 44#ers if you wanna get rid of them
what injectors are they?
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Old 09-10-2008, 11:57 PM
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Originally Posted by 00ChevyScott
shoot me a PM about those 44#ers if you wanna get rid of them
what injectors are they?
haha ok...
I dunno, i bought them from Justin. all i know is they are 43.8#s
They been workin fine for me for well over a year now.
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Old 09-22-2008, 08:17 PM
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Well with the 8.1L's I am around 70% at 5800 running a little rich.
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