Quote:
Originally Posted by Javiergarcai
No I know the speedo should be the same but it FEELS the same. like the motor revs the same as before, doesn’t go through the powerband faster than I thought. I’m getting it retuned Friday so i’ll See what my tuner says
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The speedo uses the driveshaft speed to determine MPH and miles traveled.
Until you have the speedometer re-calibrated the speedometer and odometer will show higher speed/more distance than is true.
You gained ~12% increase in rear wheel torque, something you
should be able to notice.
I don't know how Chevy tuned the trans and torque convertor for the difference, but it may be the convertor is locking sooner than it would on an LT that came with the 3.27. Your tuner may be able to change that.