7 Degree 8mm Std Install Height Chromoly Valve Locks Keepers [LS] The Speedmaster serpentine belts are

The Speedmaster serpentine belts are manufactured from a synthetic neoprene compound that resists heat

Ford rear-end housings

They provide higher power and torque transmission

Speedmaster pushrods are available in both 5/16 in

plus a reserve

7 Degree 8mm Std Install Height Chromoly Valve Locks Keepers [LS] The Speedmaster serpentine belts areSpeedmaster valve locks are designed for stock or performance engines using 7 degree valve locks. They are manufactured from machined steel and offer excellent valve spring location, so it is not necessary to change to a 10 degree retainer. Whether you're rebuilding a stock engine or changing to valve springs that have more seat pressure, these Speedmaster valve locks will provide the reliability that you've been looking for.