Rear axle question

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Nov 17, 2011 | 04:23 PM

blake29

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From: East TN

Rear axle question

Are the rear end ratios different on a automatic FD and a 5 speed FD????
Thanks

Nov 17, 2011 | 04:32 PM

tafkamb2

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Yes I don't remember right off hand you might try the faq.

Nov 17, 2011 | 04:42 PM

RustyGent

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3.90 Automatic
4.10 5 speed
4.30 Later model (The fancy spancy versions) 5 speed.

Nov 17, 2011 | 07:23 PM

blake29

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Thanks

Nov 17, 2011 | 08:57 PM

blake29

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I'm swaping a 5 speed into an automatic car.
Should I leave the auto rear end on the car or change out to the 5 speed rear end.??
What would be the +'s and -'s of either way??
Thanks

Nov 17, 2011 | 09:02 PM

RustyGent

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https://www.rx7club.com/showthread.p...ic+manual+swap

Nov 20, 2011 | 02:23 PM

cewrx7r1

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From: In A Disfunctional World

Quote:

Originally Posted by blake29

I'm swaping a 5 speed into an automatic car.
Should I leave the auto rear end on the car or change out to the 5 speed rear end.??
What would be the +'s and -'s of either way??
Thanks

It depends on the power your engine is making and car usage.
Mine is around 400 whp and a street car. I went 3.90 to reduce tire spin in 1st and 2nd gears. Which it helps. But I also went with the .806 5th.

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Rear axle question

Rear axle question

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