vkh
Full Access Member
- Joined
- May 21, 2015
- Posts
- 436
- Reaction score
- 138
- Location
- Western Montana
- First Name
- Var
- Truck Year
- 1981
- Truck Model
- C2500
- Engine Size
- 454
Mine is an 81 c2500 with 454, th400, and 3.73 at the time. I got 11-12 with everything stock except a set of headers and the timing advanced to about 12° initial (factory spec was 4° iirc). Now I was a dumb teen so I wasn't exactly lite footed.