Wumbo
Full Access Member
- Joined
- Dec 12, 2018
- Posts
- 1,084
- Reaction score
- 3,997
- Location
- Illinois
- First Name
- Rob
- Truck Year
- 1986
- Truck Model
- C20
- Engine Size
- 454
before / after , what difference does it make anyways!??
serious though.
If your ignition REALLY IS set at 10° before top dead center , that's your problem.
Reset timing to 10° AFTER top dead center, take two aspirin and call me in the morning..
Don't bother posting without a pix.
Hope this helps!