Perry C
Junior Member
- Joined
- Mar 17, 2013
- Posts
- 10
- Reaction score
- 1
- Location
- tennessee
- First Name
- perry
- Truck Year
- 1986
- Truck Model
- c10
- Engine Size
- 350
I have a 1986 1/2 ton truck it has a 350 engine and it has the big hei distributor with vacumn advance it has the 3 wires that come out and plug into the cap but then it has 4 on the back side that plug in to a plug that goes into the firewall.
Any idea what they do? I know you unplug them and it wont start. Can you put a regular hei dist. in it and it work and run? Reason I ask is it will idle up at times and then back down. Put a vacumn gage on it and it shows late timing and when it idles up it"s normal and at times going down the road it seems like its missing and then it goes away. And it has no egr valve. somebody put an older 350 in it with non egr intake. Just didn't know if it has something controling the timing advance or what?
Any idea what they do? I know you unplug them and it wont start. Can you put a regular hei dist. in it and it work and run? Reason I ask is it will idle up at times and then back down. Put a vacumn gage on it and it shows late timing and when it idles up it"s normal and at times going down the road it seems like its missing and then it goes away. And it has no egr valve. somebody put an older 350 in it with non egr intake. Just didn't know if it has something controling the timing advance or what?
