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ls3 42lbs injectors

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Old 04-09-2013, 02:03 PM
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Default ls3 42lbs injectors
will the ls3 42lbs injectors be big enough for my 408
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Old 04-09-2013, 08:14 PM
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Are you gonna run on pump gas? According to your sig no nitrous, soo thats out of the question.
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Old 04-10-2013, 02:08 PM
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need way more specifics.... heads, cam, exhaust, intake?
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Old 04-10-2013, 07:42 PM
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For a n/a 8 cylinder engine, 42# injectors will support 550 FWHP on gasoline at 80% dc and 675 FWHP at 100% dc.
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Old 04-12-2013, 09:30 AM
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I'm running those injectors on my 408 with LS3 intake and P/P LS3 heads and put down 475/475 and they work perfectly
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Old 04-12-2013, 12:19 PM
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Whats the duty cycle^?
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Old 04-14-2013, 06:31 AM
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http://www.witchhunter.com/injectorcalc1.php
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Old 04-14-2013, 09:03 PM
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Its a fast 102 and a 408 long block from Thompson motorsports. They are ls3 heads. And yeah no giggle gas. For now maybe a small 75 or 100 down the road just depending on track times and yes pimp gas 93 octane
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Old 04-15-2013, 12:33 AM
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Originally Posted by USMC5811
I'm running those injectors on my 408 with LS3 intake and P/P LS3 heads and put down 475/475 and they work perfectly
Tiny cam and flat torque curve???
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