Zip Corvette sales and customer service representatives are here to serve you during the following hours:
Mon-Fri. 8:00am-5:00pm
Sat-Sun: Closed
(Eastern Standard Time)
Zip’s showroom will be unavailable for walk-in shopping or order pickup. Local customers are encouraged to call us at 1.800.962.9632 to place an order with your favorite Zip salesperson. All customers can continue to shop securely online 24/7 at zip-corvette.com. Orders are shipping as usual. All in-stock parts ship same-day when your order is placed by 3pm ET Monday-Friday.
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.