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2.4L Performance Tech 16 valve 172 hp EcoTec with 162 lb-ft of torque

Matting a 6-speed auto to the HHR someday...

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Old 02-11-2021, 11:13 AM
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Join Date: 02-07-2021
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Smile Six Speed Automatic
4T40-E/4T45-E, 4T80-E, & 6-speed Auto transmission info
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Old 02-11-2021, 11:26 AM
  #12  
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Time Machine! The answer is still: yes if you use the TCM from the donor and can do the ECM programming.. Not a simple bolt on mod.
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Old 02-12-2021, 02:25 PM
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Lightbulb 6T45 MH7 Six Speed Transverse Automatic
This seems to be the choice for a HHR transmission upgrade.

https://gmauthority.com/blog/gm/gm-transmissions/mh7/
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