700-R4/ 200-4R TV cable kit
Bowler Tru-Shift system
When GM designed the TV cable systems they were set up for a specific carburetor/throttle body system on a specific intake with the correct bracketry to continually duplicate the settings they calculated for line pressures. If a change is made, such as a different carburetor installed, the change in geometry could disrupt this balance and proper adjustment may never be achieved. Many times the adjustment gets close enough for proper operation, but it is never calibrated to what it should be, and therefore the performance and longevity of the transmission is compromised. All too often though, you hear the stories of how a newly rebuilt transmission was burned up in only a few miles. This is almost always due to improper TV cable adjustment. It really is that critical.
Many years ago as we were working on more and more 700-R4 & 200-4R transmissions that were being used in hot rods we noticed how common it was to see units with burned up clutches due to improper TV cable adjustments. This got the gears turning and we decided to develop a solution that was so easy to use that there was virtually no way to get it wrong. This led to the creation of the Bowler Tru-Shift system. We spent countless hours developing a correction arm and bracket system that would allow installation of the TV cable onto a variety of popular 4-barrel carburetors without fear of burning up your transmission. By studying the geometry that GM designed for their system and adapting it onto our brackets, we are able to consistently and repeatedly achieve proper line pressure with a one-time adjustment of the cable during installation. This also allowed us to make a few tweaks to the system that creates a little higher pressure off idle to better apply the clutch packs when they are seeing the greatest amount of stress getting the vehicle moving from a complete stop. By creating a non-linear cable pull we are also able to apply the pressures at different rates throughout the entire throttle range producing a much smoother response in the valve body for gear shifts. There is truly no other TV cable kit on the market today that does what our Tru-Shift system can.
We are confident that the Tru-Shift system will produce the results needed to give your transmission the life expectancy and performance you are looking for. The precision of the Tru-Shift system eliminates any need for checking line pressures, further cable adjustments, and worries of burned up clutch packs. It is a simple bolt on solution that comes with all the components needed to get your carburetor connected to your transmission. We even go as far as verifying the length of the cables we send so that we know without a doubt that the system will deliver the results needed. Regardless of your experience with setting up TV cables we can assure you that following our instructions will result in a successful installation. It may be tempting to go with a less expensive cable and bracket system, but those types of kits cannot duplicate the correct geometry needed and those savings will quickly disappear when you are paying someone to rebuild your transmission again after only a short time of use.
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