The Stovebolt Site Forums The Parking Lot Big Bolts Transmission Parking Brake, 4 Speed Chevy, 1966

Grigg is right, that's a Dual Shoe parking brake.

There will be a pin as big as your thumb on the drivers side and when viewing from the back it's at the 9 o-clock position. The dual shoe lever pivots on that pin and the other end of the lever connects to the linkage hanging down on the passenger side. The deflector ring in the middle of the drum is also a dead give away...it keeps U-joint grease from flinging out onto the inner shoe and drum surfaces...if you have an external band that deflector ring is not needed/used.

Mike B