I'm looking for a cummins 5.9 core and I have a few questions about the oem turbos that came on the ISB and the ISB HO's.

First off, are the turbos the same between the regular ISB and the HO version?

Are they HX's or HY's?

Is there such a thing as an HY35 or HY40

Has Cummins EVER used an HX 40 on any 5.9 in a dodge?

What turbo is used on the Gen 3 Cummins?

I'm getting some conflicting info on this crap so I want to find out all I can so I know a little better who I should watch out for!

Thanks,
Brent.

 

you're either going to find an HX35 or an HY35... never gonna find an HX40.

3rd gens use an HY35

do yourself a favor, and find a 96-98 12v 5sp motor

 

Don't get an HY35 turbo. Although they spool up insanely fast, they are very restrictive. An HX35 is slightly better and can be used in a small twin turbo setup. The HY turbos come on either the 99+ or 2000+ automatic trucks. The manuals have the HX35 as does the HO. All the third gens, automatic or stick, have the HY35.

 

Thanks alot guys! I can't believe some of the faulse info floating around out there that people try to pass as "the real deal"

Thanks Again,
Brent.

 

99 auto's came with HX35's.

 

Mine used to be an HX-35 stock, but got upsized. It had a breathing problem.