Thread: 9" Ford center sections

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Originally Posted by rumrumm

I have a 3.89:1 Detroit True-Trac is my 3W and I think it is a great combination with my 700R4 and 30 inch rear tires. The True-Trac is like driving with an open rear end, but when it senses spin, the worm gears engage and give you bite with both rear tires. No noise, and no issues that I have noticed. If you are going to use sticky tires and go to the drag strip a lot, a locker would be a better choice. But if you are driving primarily on the street using street tires with just an occasional trip to the strip, a True-Trac would be a good choice.

With a 3:89 does it feel like it is spinning a lot of rpms at highway speeds, I was thinkin something like a 3:50. I looked at your pics you have linked, very nice car. Edd

Originally Posted by uppster

With a 3:89 does it feel like it is spinning a lot of rpms at highway speeds, I was thinkin something like a 3:50.

I turn 2200 rpm at 70 mph thanks to the overdrive.