pacman1969

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.

DaveEstey

iTrader: (2)

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.

pacman1969

looking for a compleat bolt up swap,i have buddys with miata parts cars

DaveEstey

iTrader: (2)

It's not a simple bolt-up swap.

pacman1969

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

DaveEstey

iTrader: (2)

5-speed to 5-speed.

I'd be surprised if you couldn't find an FC N/A gearbox for $150.

Chuck Baader

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.