#11

09-29-2013, 10:32 AM

low63gp

Senior Member

Join Date: Nov 2004

Location: Tracy Ca

Posts: 126

Guys,

I have found that my car speedp is running 95 mph at a true 70 mph and the tach is at 3200 rpm.
I think it is due to smaller tires. Does anybody know the calculation of gain in mph on speedo if I change fron 3:23 to 2:69?
It looks like that is what I plan to do. Im just wondering what my new true mph adjustment would be at 3200 rpm with that gearing increase.

Also, if anyone has a 2:69 from 61-64 I am interested if you are within 500 miles of Central California.

Thanks,
Mike

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