Jims86
Full Access Member
- Joined
- Aug 3, 2010
- Posts
- 5,492
- Reaction score
- 133
- Location
- Patterson,Ca
- First Name
- Jim
- Truck Year
- 1986
- Truck Model
- K10 Suburban Silverado
- Engine Size
- 5.7 TBI
Hoping there are some current or retired GM techs out here reading this.
The part number is to the 86 only truck replacement 350, rpo code LS9.
Has anyone else with this engine experienced an un diagnosable(meaning, all the usual been checked over and over) rough idle with these engines, and if anyone has ever gotten one to run smooth, what was the problem? I have heard rumors about mis matched pistons, anyone else heard this?
The part number is to the 86 only truck replacement 350, rpo code LS9.
Has anyone else with this engine experienced an un diagnosable(meaning, all the usual been checked over and over) rough idle with these engines, and if anyone has ever gotten one to run smooth, what was the problem? I have heard rumors about mis matched pistons, anyone else heard this?
