Just got RevShift transmission mount installed. Now that I'm finished, I could probably repeat the installation in less than 10 minutes. Instructions:
- Put car on jacks. Don't bother removing the exhaust or prepping your vehicle in any other way.
- Put hydraulic jack under back of transmission (forward of the transmission brace) and lift until vehicle is almost taken off the jack stands. That'll open the gap slightly.
- Lube the RevShift transmission block. Get under the car and use a normal hammer to get the front edge seated equally in the gap on both sides.
- Turn the hammer sideways and jam the head up past the transmission mount into the propeller flange. Now you have a lever. Push the handle of the hammer toward the front of the car, forcing the transmission block into the mount. You might have to re-seat the hammer a couple of times to get the right angle.
: my transmission mount only has 24k miles on it, so it was in very good shape. However, there was a very clear difference between the feel of the car before and after the RevShift transmission block installation. The most obvious change was the fact that by raising the back end of the transmission slightly, more pressure was placed on the shifter plate and consequently, I noticed a mild decrease in shifter slop. It's slightly notchier now that it was before (Katech v2 short shifter + UUC bushings), which isn't appreciated, but doesn't affect my ability to shift. I also feel slightly
more transmission vibration through the shifter and into the car, which I like because my "butt dyno" has more data to chew on. When combined with the Creative Steel differential bushing and block, there was a slight, additional reduction in the infamous parade clunk that we all hate. I presume that disengaging the clutch is creating a torque reversal that causes upward deflection in the transmission, which this block tries to counteract.
In summary, the RevShift transmission block is ridiculously overpriced (it probably costs RevShift less than $5 to mold this), but still represents a worthwhile upgrade over the OEM Cadillac transmission mount. I didn't have shifting problems due to a collapsed transmission mount, so I'm not the primary audience for this part. Still, I don't regret the $50 because of the peace of mind and increased vibratory feel through the shifter that this block provides. For those of you that suspect that your shifting problems are due to transmission misalignment, this upgrade is a no-brainer.