- Joined
- Aug 19, 2010
- Posts
- 28,450
- Reaction score
- 9,401
- Location
- Kansas City, Mo
- First Name
- Jacob
- Truck Year
- 1977/1990/1991
- Truck Model
- C10 longbed/R1500 Burb/R3500 Dually
- Engine Size
- 350/350/454
I know that piston slap is pretty common with them and usually lasts a little bit upon cold start up. Are you sure it's not that?