VPC20HD
Junior Member
- Joined
- Jan 16, 2024
- Posts
- 21
- Reaction score
- 13
- Location
- California
- First Name
- Vincent
- Truck Year
- 1982
- Truck Model
- C20 HD
- Engine Size
- 350/5.7/LT9
Hey everyone,
I have an 82 C20 that originally had a "M code" 350 sb with all the emissions stuff (California).
After research, my understanding is that you were only supposed to put 89 unleaded with that engine.
When my dad first purchase the truck, he didn't know this. He always put 87 and eventually had to replace the engine.
In 2006, he put in a new 350 crate engine from Chevy and hasn't really been driven since.
My question is, Do I still need to put 89 in it or am I good putting 87?
I have an 82 C20 that originally had a "M code" 350 sb with all the emissions stuff (California).
After research, my understanding is that you were only supposed to put 89 unleaded with that engine.
When my dad first purchase the truck, he didn't know this. He always put 87 and eventually had to replace the engine.
In 2006, he put in a new 350 crate engine from Chevy and hasn't really been driven since.
My question is, Do I still need to put 89 in it or am I good putting 87?
