I'd just slap on a cold air kit and call it a day.

 

to easy, everyone does that,

I'm starting a full build on the truck [prerunner], and trying to think outside the box.

if headers are the same, tuners are the same, cai are the same, why wouldn't the intake fit, or does anyone know any issues I might run into?

 

First let me start by saying that 5.3 parts will bolt right up to a 4.8. Now there is some differences, the 4.8s are round and some 5.3s are oval. But just doing that will not make that big of a gain. If you really want to see true big gains; bolt on heads, intake, throttle body, headers, and then get yourself a cam. But depending on how old your rig is, get ready for the lower end of the engine to fry from the increased engine pressures and torque. I started down this road already, but then decided to shift gears in to a diffrent idea. My planed build is huge for my truck, but im not spilling the beans till I start it.

 

First let me start by saying that 5.3 parts will bolt right up to a 4.8. Now there is some differences, the 4.8s are round and some 5.3s are oval. But just doing that will not make that big of a gain. If you really want to see true big gains; bolt on heads, intake, throttle body, headers, and then get yourself a cam. But depending on how old your rig is, get ready for the lower end of the engine to fry from the increased engine pressures and torque. I started down this road already, but then decided to shift gears in to a diffrent idea. My planed build is huge for my truck, but im not spilling the beans till I start it.

I HAVE A NBS, what about some porting and polishing in addition to the intake, so the 5.3 has a bigger throttle body as well? when i make the changes i was already planning on ARP rod bolts, that's what my dyno buddy told me I would have to do.

 

yea its all the same from a 5.3 to a 4.8 except the bottem end 5.3 has dif crank pistons and rods but everything eles is the same its a 78mm throttle body if u want a good flowing intake ive heard the ls2 and ls6 fit on there too and flow air easier

 

Took my K&N intake of an 03 5.3 and fit right onto my 'new' 00' 4.8

 

id be more interested in knowing if an LS6 intake can fit and how that can be done?

 

I know im a little late, but I would get a holley efi manifold, make sure its cathedral port heads though. that'll make a big difference in the higher rpms. and since its aluminum it can handle boost, if your gonna go that route

 

yea its all the same from a 5.3 to a 4.8 except the bottem end 5.3 has dif crank pistons and rods but everything eles is the same its a 78mm throttle body if u want a good flowing intake ive heard the ls2 and ls6 fit on there too and flow air easier

Winner winner

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