Upgrading to a 12-bolt differential for your 1970 Corvette can provide several benefits, including:


  1. Increased strength: The 12-bolt differential is stronger and more durable than the factory differential. This can handle more power and torque without risk of failure, making it ideal for high-performance driving.
  2. Improved traction: The 12-bolt differential can provide better traction and grip, especially when using wider tires or racing slicks. This can lead to improved acceleration and overall performance.
  3. Gear ratio options are limited: The 12-bolt differential only offers two gear ratios for the Corvette, 3.73 and 4.10.. 
  4. Better cooling: The 12-bolt differential has better cooling than the factory differential. This can help to reduce the risk of overheating and prolong the life of the differential.
  5. Improved reliability: The 12-bolt differential is a proven design that has been used in high-performance vehicles for many years. This means that it is reliable and has a good track record of performance.

12 Bolt - 373

1963 - 1979
12 Bolt Rear End - 3:73 Gears

$6,499.99 each

12 Bolt - 411

1963 - 1979
12 Bolt Rear End - 4:11 Gears

$6,499.99 each