Coupler Delete Driveshaft Notes

Thank you for the purchase of a HINSON Motorsports coupler delete driveshaft for your Corvette project. Here are some quick installation notes to guide the installation. These are meant to compliment the standard installation procedure provided by GM. If the installer does not have experience with this product or terms used here, it would be wise to seek help elsewhere.

1 - Verify Length

There are variations in length between model years (not trim levels). The installer needs to confirm the length of the shaft pulled from the vehicle matches the length of the replacement shaft going into the car. You will be comparing the length of the stock shaft with couplers attached to the new driveshaft. Contact us if what you received does not match your OEM piece.

2 - Measuring Runout

• GM specifications for an OEM driveshaft with couplers is roughly 0.010” of runout. For our coupler delete variation, the installation should be as close to zero as possible with a maximum value of 0.007”.
• To measure runout, use a dial indicator to check the movement of the input shaft as it rotates. To make adjustments, loosen the bolts and adjust the torque sequence to align the components.

3 - Automatic transmission installations

All model years need to set the locking bolt after letting the engine and driveshaft come up to temperature. The 2014 & early 2015 models should upgrade to the new generation flex plate.

Final Notes - Vibrations are not an issue when properly installed. All shafts are balanced and torque tested. Failure to verify length and set runout could result in engine damage or the need to repeat the installation to resolve a vibration.