38R or stock turbo?

[PABowhunter]

My dad bought a 2003 450 with a 7.3 a while back and today, as I was going through the paperwork that came with it from the previous owner, I found a 38R installation instruction guide. Now, just looking at it, it looks just like my stock turbo on my 01. Stock intake boot and everything. However, it does whistle louder than mine and seems to make boost quicker as well. Are there any markers on the turbo I can look for to tell me if it is indeed a 38R? Unfortunately the serial number and bar code are worn off. Can a 38r still use the stock intake boot?

 

[ghohouston]

If it has a stock intake all the way to the turbo, its stock. 38r's have a softer black rubber piece, orange inside, that will say garrett on it

 

[ghohouston]

Your dads truck could just be louder inside, my xl truck is ALOT louder in xab than xlt and lariats ive been in

 

[PABowhunter]

Actually his xlt is way quiter inside than my lariat. I don't know if the 03's had more insulation than 01's. I noticed a difference in turbo whistle at idle standing outside by the exhaust. Is it possible for a stock intake boot to fit on a 38r? Or is it bigger?

 

[ghohouston]

No a stock intake would fit inside of a 38rs intake

 

[purpleheart350]

Would or wouldn't

 

[dmd]

Stock WOULD fit inside a 38R intake. 38R intake is much larger.

Looks like the truck had a few go-fast parts in a past life. Is the PCM cover
carved out for a chip?

 

[David N]

The factory turbo intake and 38R intake are NOT interchangable. The 38R tube is much larger.

The louder whistle could be from a wicked wheel or other aftermarket wheel, but you don't have a 38R.

 

[PABowhunter]

Ok. That's what I was figuring. I stuck my head in there further and saw that the compressor housing is 1.00 A/R which I know is stock for superduties. I know the guy spent a lot of money on banks crap. Was hoping he threw a new turbo in too. Oh well.

 

[bad12jr]

Does it have the banks cast dp elbow. Never quite understood that.

 

[PABowhunter]

Yea, it has the banks brake and everything that goes with it. Wires running everywhere for that stuff. Nightmare trying to troubleshoot. It's nice when it works though. Unfortunately that hasn't been for some time.