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Old 09-19-2006, 11:00 AM
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Pick me a manual transmission

I am in the process of putting a 302 Ford into a 1979 Mazda RX-7. The car will be used for on track events and hillclimbs. Figuring about 350 hp and equal torque from the engine, road racing tires and 2400 lbs weight. Not sure what my options are in terms of getting the power to the rear end.

A low first gear is a waste because I will never need it and won't ever have the traction to use it even if I did.

I can run almost any rear end ratio.

Top speed needs to be about 140-150 mph with the anticipated 25" tall tire and 6500 rpm redline.

Light weight is important.

Super strong is not needed as the engine is that good and the car doesn't weigh much.

Cheap is good. Real good.

4 speed versus 5 speed not that big a deal as the torque band is wide enough and gas mileage isn't much of a concern.

I am not brand loyal, so if you have a good way to bolt up a GM trans to my Ford engine, I am all ears.

Thoughts, options, opinions?



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Old 09-20-2006, 07:14 AM
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BW t-10

Based on your vehicle and application; I would suggest a Borg Warner T-10. While not a rugged as the Ford top loader they are reliable, come in a number of ratios and quite available as they have been used by both GM and Ford. 65 Corvette and 65 Mustang are sample applications.
Here is a link for about everything you would want to know about them. http://fiedlerh.home.att.net/BW.htm
I have one in my 65 Stang but I have added a Hurst comp shifter. I would recommend that as well.
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