What Turbo Do I Have????

[bmx0964]

I just recently bought a 2000 F350 7.3L.

It has a Garrett turbo but it definitely is not stock. It makes about 24psi at WOT (wide open throttle) the guy said it makes 28psi but I can't get it above 24psi. Does anyone know the stampings on these or any way that I can figure out exactly what it is. He said it was a Garrett stage 2 but that doesn't tell me what model the turbo is because Garrett doesn't make a turbo called a "stage 2."

Any help would be greatly appreciated.

[HVAC SuperTech]

whats the A/R on the compressor side and does it have a wastegate, and whats the A/R on the exhaust side? can you take a pic of the compressor wheel? all these things will help with identifying the turbo

[bmx0964]

Sorry kind of new to the diesel world been a gasser for ever and now opening my eyes into the future lol. But anyways what is the A/R and also do you want a pic of the compressor wheel with the turbo apart or just pull the tube off and snap a pic.

[HVAC SuperTech]

no, just pull the tube off and snap a pic.
the A/R should be stamped on the tag or on the housing near the top of the turbo where the Y pipe clamps on to.

it will say A/R 1.10 or A/R .84 or something of the like

[HVAC SuperTech]

snap a pic of the turbo as a whole from the front of the engine. that will help also.

[bmx0964]

Alright I will get those tomorrow its too dark out tonight to get a good picture.

[Tampa450]

You do know that a stock garrett turbo is capable of making that much boost right?


There is a bolt on Garrett GTP38R Ball bearing turbo.
You can easily see if its that because it has a 4" opening insteaed of a 3" like the stock intake. They come with a black rubber boot to adapt to the stock intake that is very easy to spot.

Im guessing its a stock turbo..... If the previous owner bought a new/ upgraded turbo he'd remember it...... they aint cheap

Sounds like he was BSin you.... or maybe just dumb

[bmx0964]

I am almost 100% sure its not a stock turbo. The truck has a larger aftermarket intercooler also. This turbo that is on mine also looks larger (from the outside) then my buddys stock turbo. I could be wrong though, I usually am lol. But Ill look into it some more, I know the exhaust side of the turbo is 4" because the downpipe reduces from 4"-3" and the guy gave me a 4" downpipe with the truck that he hadn't put on the truck yet.

[ZombieWeinerDog]

my early 99 turbo(the smaller one) makes 25+ psi no problem.

[bmx0964]

I understand that stock turbos can make the boost, my issue is I am pretty sure mine isn't stock I need to find a way to identify the turbo.