Is there an after market floor shifter made for a GM 700R4 transmission?

While there isn't a widely available, off-the-shelf aftermarket floor shifter specifically *designed* and marketed for a GM 700R4 transmission in the same way you might find for a more modern automatic, you absolutely can adapt and use various aftermarket shifters. The key is understanding that you'll need to select a shifter compatible with the 700R4's cable-operated linkage.

Here's what you need to consider:

* Cable-Actuated Shifter: The 700R4 uses a cable to control the transmission shifts. You need a shifter that works with a cable, not a direct linkage or hydraulic system. Many popular brands like B&M, Hurst, and Lokar offer cable-operated shifters. They won't be specifically *labeled* for a 700R4, but they will be compatible.

* Cable Adapters: You might need a custom cable or adapter to properly connect the shifter to your transmission's cable linkage. This is common because the shifter's cable attachment point may not perfectly match the 700R4's. Lokar is a common source for custom cables and linkage components.

* Shifter Linkage: Proper adjustment of the shifter linkage is critical for smooth and accurate shifting. You'll likely need to adjust the cable length and possibly fabricate or adapt some components to get everything aligned correctly.

In short, you can't just buy a "700R4 floor shifter." You buy a cable-actuated shifter from a reputable brand and then likely need to source or fabricate the correct linkage to adapt it to your vehicle. The process involves some mechanical aptitude and possibly some custom fabrication.