Zip Corvette sales and customer service representatives are here to serve you during the following hours:
Mon-Thur. 8:30am-6pm
Friday: 8:30am-5:30pm
Saturday: 9:00am-1:00pm
(Eastern Standard Time)
Our showroom is open to the public Monday-Friday from 8:30am-5:30pm (EST). We take orders in our showroom or you may call your order in over the phone and we will prepare your items in advance so you do not have to wait.
Our performance and installation facility is open Monday-Friday from 8:30am-5:30pm (EST). Visit our showroom to setup an appointment to have your Corvette tuned, accessorized, enhanced or more. Read more about our performance and installation facility here. *All work requires an appointment.
Other questions? Contact us here 24 hours a day 7 days a week.
New replacement 1965-1979 Corvette differential carrier clutch preload plate and spring kit. Includes 400lb springs and spring plates that would have been originally installed on all big block and small block Corvettes with heavy-duty differentials. The heavy springs provided more positraction control as they increased the break-away torque for the clutch plates. However, heavy springs can also reduce driveability in cornering situations as the clutches will not slip as designed.