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4.8 L20 Build questions

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Old Jan 11, 2017 | 01:03 AM
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AirborneGreaseMonkey's Avatar
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Default 4.8 L20 Build questions

Hey everyone, i tried to research as much as possible so i dont post excess threads but everything i find on this subject is about the gen 3 4.8's. Im putting my gen 3 LS1 intake, fuel rail, injectors on my gen 4 l20. (ive read about the small loss in power but im putting twin turbos on in a year or so, so thats acceptable to me). I want to know if the WP/TB, tentioner pully clearance issues they had on the gen 3's are to be expected on my gen 4. Also should my fuel rail and injectors fit without fabrication? ive read about brackets on the gen 3's but it doesnt look like anyone has posted a gen 4 thread. Any other advice is welcome, thanks!

Ls1 is out of a 98 cammaro
L20 is in a 2010 silverado
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Old Jan 12, 2017 | 12:25 PM
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Gen 3 and 4 accessories are the same, so any fitment problems you have with an LS1 intake on a Gen 3 will apply to a gen 4.

I'm not sure what you are asking about the fuel rails. It appears you are asking if LS1 fuel rails will fit an LS1 intake, but that seems way too obvious.
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Old Jan 13, 2017 | 12:02 PM
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Use a 5th Gen Camaro water pump. It keeps the truck pulley spacing and the water neck will clear the LS1 intake.
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Old Jan 15, 2017 | 09:34 PM
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Right on, thanks brotha
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