Hello

Has anyone heard of a Chevy HHR SS 2010 being dyno tested at production plant. I recently came across a 2010 SS which was perhaps a project car at GM. This SS had a metal plaque and documents indicating the car was dyno tested at 389 hp.  

On 12/28/2024 at 5:24 PM, Jacob Diana said:

Hello

Has anyone heard of a Chevy HHR SS 2010 being dyno tested at production plant. I recently came across a 2010 SS which was perhaps a project car at GM. This SS had a metal plaque and documents indicating the car was dyno tested at 389 hp.  

Where did you find the car?  I'm not familiar with that.  The Stage kit for the HHR SS brought output to 290 hp and one of our members here got a stage kit for his HHR SS a while back, but 389 hp is nearly a 100 hp jump over what GM ever offered, and the rest of the car would have needed to be beefed up too. 

@Jacob Diana Welcome to C&G, look forward to interacting with you.