Paddle Shifts

The GTM cockpit is not spacious. My strategy is to leverage technology (e.g. Smart Mirror, inTOUCH screen) to provide space. I would like to have a center console similar to the one in my Corvette.

Gary Cheyne's GTM fitted with paddle shifters to Porsche G50/20 transaxle.

One place to regain some space is to eliminate the gear shift between the seats. The way to do this is to go with a paddle shift solution. The C5 Corvette (base donor car for the GTM) does not have paddle shifts. So I am reading through the blog posts on SEMA (Specialty Equipment Market Association) and come across a post for Master Shift.

Paddle shifter unit. t uses the horn wire to send signals to the controller unit.

Master Shift makes paddle shifters for automatic and manual transmissions (including the Porsche G50/20). The hardware is available for C5/C6/Z06 steering columns. They have already installed the system in a Factory Five GTM. It can be retrofitted to a variety of older and component cars.

Shift hardware that converts the G50/20 from shaft driven to cable driven .

This is how it works:

1. Shift command is transmitted via the horn wire to a electronic controller.
2. Two cables are connected from the controller to the shift hardware mounted on the transmission.
3. Shifts are not executed until the clutch is engaged. 
4. Safeties are built in to prevent neutral and reverse shifts
5. The controller is programmable.
6. A dash display indicates current gear.