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Discussion Starter #1
Is it possible to change my 75 vette's transmission into a 4 gear instead of 3.

What would I need to do this ?

Or do I have to get a complete other transmission ?

Sory for the stupid question but I am verry new to all of this.

Thanks for your time.
 

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DC Crew
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There are no stupid questions! :whip:

I will move this post over to the C3 section so those guys see it.:thumbsup:
 

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if i'm correct, you probably want the 700r tranny. it has an over drive and you can have it installed with minor changes.
 

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You can do nothing with your present transmission to change it from a 3 speed to a 4 speed.
YOu will need another different transmission. The 700R4 just about bolts right in but you need to fabricate a rear mount and shorten the drive shaft plus make a stand alone torque convertor lockup.
The other alternative is the 200 R4. It can be make just as strong and is even easier to install. It is becomming more popular for swapping.
Both bolt right up to the motor without any modification and both clear the tunnel.
The 200 also has a better spread of gears then the 700.
 
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