8hp70 vs 8hp90 - Choosing the Right ZF Transmission
Deciding between the 8hp70 vs 8hp90 usually starts with one simple question: how much power are you actually making? If you're deep into a project car build or just trying to figure out why your Hellcat has a different gearbox than a Scat Pack, you've probably realized that these two ZF units look remarkably similar from the outside. However, the differences under the skin are what dictate whether your transmission lives a long, happy life or ends up as a pile of expensive metal shavings on the drag strip. ...