4.08 or 3.90 gear questions...

370ZilverZ · 01-18-2012, 12:42 PM

Quote:
Originally Posted by daemon1957
Will a 7AT loose cruise control with a manual differential running 3.9 gears?

This is what I was thinking of doing with mine... From the 7AT ratio of 3.3 I believe? To just going for a Manual pumpkin which is still better than ours, instead of a full 4.08 swap... would this be worthwhile? Or a waste of time... and how does it affect drive-ability?

- Cruise Control
- Speedometer accuracy
- Tire Sizing to Compensate??

Quote:

Originally Posted by daemon1957

Will UpRev take care of recalibration of the speedometer? Is there an option to input your final gear ratio in to make that correction? I was planning on scheduling an UpRev tune as soon as I install my exhaust the end of the week, but will change out the rear diff first if the UpRev will make the speedo correction too.

Any help out there? Please

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