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trans help!

Old 03-09-16, 05:54 AM
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Rednek
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trans help!

ok...im running reginal s.c.c.a with a 70 mg midget with a 12a bridgeport and 456 posi i.r.s rear.that being said car is a beast and incredable to (try) and drive! my problem is my 12a came with 2 4 speed trans and the 1 im using shifts farly good from 1st to 2nd an 7,000.......but is a beast to try and get into 3rd an high rpms,especialy with any quick like shifting.so will a miata 1st gen 5 speed bolt up to my 12a? and if so what will i need to change to make it work??? really want a 5 speed but $$$ is a big factor in my build,only 2 weeks away till season starts and my 1st real run on track.
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Old 03-09-16, 08:44 AM
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Are you interested in the Miata gearbox for the ratios?

You can swap the Miata gears into an FC N/A transmission, which should bolt right up to your 12A.
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Old 03-09-16, 09:02 AM
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looking for a compleat bolt up swap,i have buddys with miata parts cars
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Old 03-09-16, 09:27 AM
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It's not a simple bolt-up swap.
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Old 03-09-16, 10:36 AM
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ok....on the inturnals swap.can you use miata 5 speed gears in my rx7 ( i guss thats what it is) 4speed box? or is it a 5 speed to 5 speed only swap? just trying to understand whats used to do what in trans swap
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Old 03-09-16, 10:47 AM
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Originally Posted by pacman1969 View Post
ok....on the inturnals swap.can you use miata 5 speed gears in my rx7 ( i guss thats what it is) 4speed box? or is it a 5 speed to 5 speed only swap? just trying to understand whats used to do what in trans swap
5-speed to 5-speed.

I'd be surprised if you couldn't find an FC N/A gearbox for $150.
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Old 03-09-16, 04:08 PM
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I have a rebuilt FC (with all MazdaSpeed parts) 5 speed for sale. Case is single mount on rear. Email me directly if you are interested. cwbaader at gmail dot com.
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