Ok turbo help

[02psd7.3]

This is what i am confused about
the stock turbo says holset than a number

i have a 2007 5.9 6 speed 4x4 qcsb mine says holset 2

truck two is a 2007 5.9 auto 4x4 mega dually says holset 3

truck three is a 2006 5.9 6 speed 4x4 qclb dually says holset 4

truck four is a 2007 5.9 6 speed 4x4 qclb dually says holset 5

My question is what is the difference in them?
Or is the differenc just the casting number?

also the mega dually turbo is much louder than the rest

thanks
tim

 

[Teelo]

also the mega dually turbo is much louder than the rest

thanks
tim

ummmmm:what:

 

[BFD99]

same intakes on all trucks?

 

[Gibson]

Measure wheel diametor....

 

[R.C.inc.]

mine says holset 2 on it.

 

[02psd7.3]

yes same intakes but the only thing different that i can see with my eyes is the number so i not sure i will try to measure tomorrow