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5.3-LS1 intake swap

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Old 05-13-2007, 05:09 PM
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Default 5.3-LS1 intake swap

a friend of mine has a 99 silverado 5.3L and is considering swapping out his intake for the LS1 intake i have sitting in my garage. what kind of gains, if any, will he see?
Old 05-13-2007, 05:13 PM
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he will actually lose some i believe! The LS1 intake doesent give the tq. down low like the truck intake does. Plus its not just a simple bolt on, if i were going to go through the hassle of doing it i woukd swap on an LS6 intake.
Old 05-13-2007, 05:30 PM
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you wil see some gains but only in the high rpm range like 6200 and up,but you will lose down low tq. it is some work to bolt-on the ls6 is the way.
Old 05-13-2007, 05:40 PM
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what kind of gains with the LS6?
Old 05-13-2007, 05:41 PM
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10-15 across the board i think!
Old 05-14-2007, 12:23 AM
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a vic. jr. swap is probably easier than ls1 or ls6 swap. More potential too.
Old 05-14-2007, 07:50 AM
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Originally Posted by Blown06
a vic. jr. swap is probably easier than ls1 or ls6 swap. More potential too.
i'm sure it would be for a setup like yours.

if he's only a basic bolt-on engine, then i see no use in swaping intakes unless it's for looks.
Old 05-14-2007, 09:12 AM
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it is a just basic bolt on truck. he is just getting started on modding it. im just trying to help him figure out his options. thanks for the input guys
Old 11-14-2007, 01:20 PM
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you may have to heat up the water pump to spin the inlet so the tb doesnt hit. thats what i did and it works pretty well but it is close.



Old 11-14-2007, 01:21 PM
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ahh man, i just realized how old this thread is. sorry about that
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