Fastcount03

iTrader: (13)

You guys that have swapped to the LS3 intake in a truck, what exactly has to happen for everything to fit? What accessories and brackets are moved or used? Thanks for the info. I have searched and maybe not using the right keywords, but can't find exactly what I'm looking for.

black04

iTrader: (15)

If you use the car throttle body you can use 2007+ truck water pump and then just trim the alternator bracket and relocate the idler.

2doorfury

iTrader: (12)

what!? so a LS3 intake swap isnt just a direct swap? what all do i need to do then..i just picked a intake up yesterday, thinking it was going to be a easy swap..

AndysC3

iTrader: (14)

It is somewhat a direct swap. Since the intake sits lower it will hit the water pump so you will need either the car water pump or one from the 07+ truck. and the alternator bracket will need to be shaved some to get the intake to sit all the way down.

SCOOTER_4.8

yup u cant just swap it like a regular ls1,ls2 intake
these intakes have diffrent heads

2doorfury

iTrader: (12)

what! your kidding me! damn, i guess i thought this all wrong. i swear ive read on here that the intake would still work with the heads..so what LS heads could i get that would make worth the time to change over?

AndysC3

iTrader: (14)

LS3/L92 with rectangle intake ports

Nflddog1000

Google it there's a article with pics and all the mods he done think its ls1 tech I read it

black04

iTrader: (15)

Cant use l92 or ls3 heads on a 5.3L. So if you want a car intake on a 5.3L then get an ls6 intake.

2doorfury

iTrader: (12)

sooo..how is guys using ls3 intakes then??