sprayedenali

iTrader: (11)

so im about to do an intake swap on my truck. right now it has the bone stock truck intake with stock 78mm TB. its a stock 5.3 with stock heads and 225 581 cam. it already made close to 800WHP on a mustang dyno with alot of boost FWIW.

but my question is if there is gains to be had with a larger TB or if i can get the same power if i just run more boost?

thanks for any help!

kmracer

iTrader: (1)

i'd wait til you build a motor, upgrade the turbo, and im guessing you have 3" IC piping, upgrade that to 3.5 or even 4" depending on your planned power level. i doubt there will be much of gain otherwise, and you're walking a pretty fine line with the stock 5.3...

awesome power, btw. good luck.

sprayedenali

iTrader: (11)

i have twin 70s, and its 2.5" from each turbo into the IC (A2W) then 4" from IC to TB

hitmanws6

iTrader: (20)

The taller the runners then better, id say a proflo or a truck 102

6techniques

iTrader: (7)

that power is through a stick? What is your goal power wise?

I say LS6 intake with a ported factory TB...that combo has seen plenty of 8's.

sprayedenali

iTrader: (11)

No, I have a 4l80 with about a 3400 10.5" stall.

I'm leaning towards the proflo with my 78mm TB.

As far as goals go, idk really... I've never gotten a clean pass out of the truck yet but as it sits now it could probably go 10.5 or so. I'd like to think it has a 9 in it somewhere but obviously that'll take some work. It's not easy to make a daily driver extended cab truck go fast! Haha

hitmanws6

iTrader: (20)

I believe you need and edelbrock 90 mm with the proflo

kmracer

iTrader: (1)

you're running a 4", might as well run the biggest TB possible.

6techniques

iTrader: (7)

pro-flo is a nice unit and you will need a larger tb...I think that will look badass on a truck.

98Z28CobraKiller

iTrader: (17)

Here's a picture of my friend Jeremy's PT94 build in his Silverado with a ProFlo XT and a FAST 92mm TB. Any 90 or 92mm should work with it.

Boosted One

iTrader: (6)

I'm running a stock ported TB on my Proflo. Seems to be making decent power. 3" charge pipe.