Winter is Coming
Time to think about winterizing your Bolt.
A good Tech Tip WINTERIZING YOUR TRUCK including a link back to the Forums for additional tips.
A pulley designed for a 3/8" belt is 5/8" wide measuring from the outside to outside(yours). A pulley designed for a 1/2" belt will measure 3/4". It looks like you have a 1955-62 passenger car balancer.