This charger is based on the factory design Variable Geometry Turbocharger. Airflow output is increased by installation of a larger compressor wheel as well as the matching compressor housing. The turbine wheel is changed to a larger Inconel 10-blade wheel. Modifications are also performed to the turbine side to improve upon the reliability of the variable vanes. Provides more intake/exhaust airflow than any of the factory 6.0L turbochargers. Known to produce a noticeable exhaust whistle on most trucks. This turbo is a good combination for Stage 1 or Stage 2 injectors. Dyno results over 520+ rear wheel horsepower have been recorded with proper fueling. Our Custom Tuning and Torque Converter will improve this turbo's spool-up time. This turbo comes with a new VGT solenoid. Designed for up to 45 psi of boost pressure. Includes manufacturer's Limited Warranty period of 6 months. Please note: This turbo has been used successfully with nitrous to produce high horsepower numbers this type of power is far past the units designed limits and can cut short the life of the turbo by over-speeding it. To help reduce this overspeeding take a look at our wastegated up-pipe.
Compressor Wheel Specs: Inducer 64.7mm/Exducer 88mm
Nowhere does it state that they use a different shaft or modify the exhaust housing except improvement of the vanes, which probably means the unison ring. Doing any kind of exhaust housing modification would involve removal of the pins, which are cast into the housing and are next to impossible to remove without destroying them. I’m not saying it can’t be done (I’m working on it now) but it’s a lot more involved than I ever thought.
It does state they use a larger 10 blade turbine wheel, which my turbo has. I have 3 powerstroke vgt turbos, all of which have different exhaust housings and wheels. I wouldn’t be surprised if there is another combination out there. Ford changed a lot of parts through out the years to make these 6.0 more reliable.
I know from experience that Garrett does not sell parts for these turbos and getting used parts is hard to come by. Unless they are getting custom 1 off parts, which would cost me more that I’m willing to spend..
I would be willing to bet there are no differences.
If somebody has the drive pressure of a vgtss I would like to compare.