Description
LB7 64mm Supercore Turbocharger
We launched our LB7 Supercore back in 2019 as a better and more affordable way to mildly upgrade the turbo in your LB7 truck with the ability of you being able to retain your factory exhaust housing. Since then we have sold 100’s of units and it has served our customers very well.
Not settling in with the success, our team at Ryan’s Diesel Service began working on ways to improve this already well-built turbo.
Introducing the RDS LB7 Turbo Super Core Gen 2. changes were primarily focused on optimizing component material and design for compressor wheel, turbine wheel, and thrust bearing, resulting in increased component durability and better overall vehicle driveability.
At Ryan’s Diesel Service, we believe innovation leads to better products.
Many new key features of this turbo include:
- 64mm 6 blade compressor
- 62mm 10 blade high flow turbine
- Upgrade 360 thrust bearing and HD bearings
- Brand new – no core
- 1 year warranty against manufacture defect
- For 01-04 Chevrolet Silverado/GMC Sierra 2500/3500 HD
CALIFORNIA WARNING: Cancer and reproductive harm – www.P65Warnings.ca.gov
Vehicle Compatibility
- 2001-2004 Chevrolet Silverado 2500HD/3500HD (LB7 Duramax)
- 2001-2004 GMC Sierra 2500HD/3500HD (LB7 Duramax)
- Retains factory exhaust housing – no housing replacement needed
- Drop-in supercore assembly installation
- No core charge required
Frequently Asked Questions – LB7 64mm Supercore Gen 2 (2001-2004)
What is a supercore and how is it different from a complete turbo?
A supercore is the internal rotating assembly of the turbocharger – the compressor wheel, turbine wheel, shaft, and bearings. This allows you to upgrade the critical internal components while retaining your factory exhaust housing, making it a more affordable upgrade than replacing the entire turbocharger.
What vehicles does this LB7 supercore fit?
This supercore fits 2001-2004 Chevrolet Silverado and GMC Sierra HD 2500/3500 trucks with LB7 Duramax diesel engines. It’s designed to work with your factory turbo housing, making installation more straightforward than a complete turbo replacement.
What improvements does the Gen 2 supercore have over the original?
The Gen 2 features optimized component materials and design improvements focused on the compressor wheel, turbine wheel, and thrust bearing. These changes result in increased component durability, better overall vehicle driveability, faster spool-up, and improved boost response compared to the original supercore design.
Do I need to remove my turbo from the truck to install this?
No, you do not need to remove the entire turbo assembly. The supercore can be installed by opening the turbo housing and replacing the internal rotating assembly while the turbo remains mounted on the truck. This makes installation much easier than a complete turbo replacement.
What are the key technical specifications?
This supercore features a 64mm 6-blade compressor wheel, 62mm 10-blade high-flow turbine, upgraded 360-degree thrust bearing for improved durability, and HD bearings designed to handle increased loads and provide longer service life than factory components.
Do I need tuning to run this supercore?
Yes, custom tuning is recommended to take full advantage of the improved airflow characteristics. While it will physically install on a stock truck, tuning optimizes performance, boost levels, and ensures proper air-fuel ratios for the upgraded components.
How does this supercore improve performance?
This supercore provides noticeable improvements in throttle response, faster boost build-up, enhanced turbo whistle, and improved power delivery throughout the RPM range. Customer reviews mention night-and-day power differences, excellent turbo whistle, and fast spool characteristics.
What comes in the optional turbo install kit?
The optional turbo install kit ($75) includes all gaskets needed for installation: both up-pipe gaskets (at exhaust manifolds and exhaust housing), both drain gaskets, oil feed banjo, and both coolant banjos. These are helpful if you’re doing a complete turbo service or replacing worn seals.
What warranty comes with this supercore?
This supercore includes a 1-year warranty against manufacturer defects. As a brand new unit with no core charge, you’re getting fresh components with full warranty coverage.
Is there a core charge for this supercore?
No core charge required. This is sold as a brand new unit outright – you don’t need to return your old supercore, making this an even more affordable upgrade option for LB7 owners.
How does the turbo whistle compare to other turbos?
Customer reviews mention the Gen 2 makes “unreal nice noise” with a noticeable but not excessive whistle. It’s described as less than a Ford Powerstroke whistle but definitely present – providing that performance turbo sound without being obnoxiously loud for daily driving.
Is this supercore good for daily driving?
Absolutely. This is designed as a mild performance upgrade that maintains excellent drivability for daily use while providing noticeable improvements in power and response. Multiple customer reviews specifically mention it’s perfect for daily driving with improved performance characteristics.









Mario Rocha De Leon –
Good quality
David L –
Best drop in LB7 upgrade for the money. Still need to get on a dyno but power difference is night and day, and the whistle this charger makes sounds awesome.
Chris –
Great turbo for the money. It spools fast ans sounds awesome
Manuel Arambula –
Let me just tell y’all! Some real boost difference! Has a nice whistle everyone enjoys . Not like the Ford whistle but you get a nice tone coming out your exhaust. Easy install don’t even have to take your turbo housing out . Definitely recommend to any LB7 owner who wants the extra bold eagles screeching out the exhaust!!
Levi A (verified owner) –
Well worth the money. These Gen 2 units make unreal nice noise. I wasn’t expecting this good of sound. Definitely can feel a power difference also. Look no further
Ron E (verified owner) –
Great unit for an upgrade! I could immediately feel an increase in my lower back. A very mild whistle once it starts spooling. Nothing crazy, and less than a Ford. I’m not really into the whistle so this works for me.
Customer service was fantastic!!! RJ was a big help as well as the rest of the team (issues with my truck not the product)!!! This team knows what customer service is supposed to be about!!! My thanks and appreciation to all!