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.
The model would be C20 or K20. The 3rd member is a direct interchange, the '4.10 ratio was used '68-'72 om 3/4 ton. No need to swap the ring and pinion, as the entire 3rd member bolts right in.