Swapping to an hx35 turbo for 6.5 diesel trucks

If you've been looking to swap an hx35 turbo for 6.5 diesel engines, you probably already know that the stock GM-X series turbos leave a lot on the table. The factory turbo on the old Detroit 6.5L was "fine" for its time, but let's be honest—it's a bit of a hair dryer. It generates a ton of heat, creates massive backpressure, and starts to choke out just when the engine feels like it's finally getting into the power band. ...

February 27, 2026 · 6 min · Kircalioglu Rachel