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Results in! 4.8L w/ Magnum 76 Exhaust Pressure Test

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Old 09-29-2012, 08:12 AM
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Great info Foose! It's about time someone got into the finer tuning of a turbocharged setup.
Old 09-29-2012, 09:00 AM
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I have a gauge for that
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Good job, looks very similar to the test I did a few weeks ago, and similar results too. I should have some really good info next week after making a couple changes...
Old 09-30-2012, 11:33 PM
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Originally Posted by LS1FREEK
Damn, I knew my Turbonetics 7668 was too small for my 6.0!! But I bought the turbo with the intention of buying a 5.3 for my swap... Oh well!
Add another one.. lol
Old 10-01-2012, 01:24 AM
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well I found a guy local to me who has a T6 S475 with a 96mm wheel with a 1.32 ar housing. The price is right so I going to try to get it this weekend!! Itll be a while till it goes on though
Old 10-01-2012, 02:04 AM
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On the 5.3l? I don't know man, I'm all about some turbine flow but that's a big boy. Think of it like this, the much smaller billet PTE 7675 in a smaller .96 t4 will make 800 wheel with your 5.3l and have a ton of low-mid end to get that heavy truck moving. How much more then 800 wheel/ more turbo do you need?

I think that's more of a high stall/3000 pound car setup.
Old 10-01-2012, 05:52 AM
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Great info Foose and thanks for the write up!

Kinda curious now as to how much different the numbers would be if it was before the T4 flange.

Originally Posted by Atomic
Good job, looks very similar to the test I did a few weeks ago, and similar results too. I should have some really good info next week after making a couple changes...
In case I missed it did you post that info up anywhere?
Old 10-01-2012, 08:57 AM
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Originally Posted by foose04
On the 5.3l? I don't know man, I'm all about some turbine flow but that's a big boy. Think of it like this, the much smaller billet PTE 7675 in a smaller .96 t4 will make 800 wheel with your 5.3l and have a ton of low-mid end to get that heavy truck moving. How much more then 800 wheel/ more turbo do you need?

I think that's more of a high stall/3000 pound car setup.
I know it will be overkill on my 5.3 but it will shine when I build a 408. And it is easyily upgradable if it ever becomes too small. Im just going to pick it up bc its a good deal on a good turbo and I can always sell it and get my money back.
Old 10-01-2012, 09:19 AM
  #38  
I have a gauge for that
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Originally Posted by Spoolin
Great info Foose and thanks for the write up!

Kinda curious now as to how much different the numbers would be if it was before the T4 flange.



In case I missed it did you post that info up anywhere?
I did in my "backpressure gauge" thread.
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