84K30
Full Access Member
- Joined
- Jul 14, 2019
- Posts
- 164
- Reaction score
- 75
- Location
- SWPA
- First Name
- Eric
- Truck Year
- 1984
- Truck Model
- K30
- Engine Size
- 454
I am planning on replacing the ignition control module, rotor, cap, coil, wires and plugs on my K30 this coming Sunday. I would like to verify, and adjust the timing, if necessary.
The truck runs as it sits but I would like to replace them since have no idea when any of these components were last changed. I will not have to worry about finding TDC on the #1 cylinder I do not remove the distributor from the engine or loosen the hold down clamp bolt while replacing these components, correct?
I've spent approximately 2 hours searching this website and the factory service manual for baseline timing specs and idle speed. The manual states refer to "Vehicle Emission Control Information Label" for timing specs. I have read that this label most often appears on the underside of the the hood or on the radiator support. Either I'm blind or someone removed it at some point.
I have read (on various internet forums) anywhere from 4 degrees BTC and 12 degrees BTC at idle. I have also read 36-38 degrees at 2500-2800rpm as a figure for total timing. Are these figures correct? I do have a timing light that displays total timing and engine rpm.
My truck came from the factory with a 454. The original carb has been replaced with an Edelbrock 1406 with an electric choke at some point.
I read to use the manifold vacuum port (drivers side on the 1406) to adjust the mixture screws and should expect to see close to 20 in Hg at the proper setting. Is this correct?
What should the idle and "high" idle speeds be set to? I understand to let the engine get up to temperature and to remove and plug the vacuum advance hose coming off the distributor while setting timing and idle speeds.
Thank you very much for taking the time to read this post and for responding if you happen to know the information that I am seeking. Also, I would like to thank any veterans who read this for their service to our great country.
The truck runs as it sits but I would like to replace them since have no idea when any of these components were last changed. I will not have to worry about finding TDC on the #1 cylinder I do not remove the distributor from the engine or loosen the hold down clamp bolt while replacing these components, correct?
I've spent approximately 2 hours searching this website and the factory service manual for baseline timing specs and idle speed. The manual states refer to "Vehicle Emission Control Information Label" for timing specs. I have read that this label most often appears on the underside of the the hood or on the radiator support. Either I'm blind or someone removed it at some point.
I have read (on various internet forums) anywhere from 4 degrees BTC and 12 degrees BTC at idle. I have also read 36-38 degrees at 2500-2800rpm as a figure for total timing. Are these figures correct? I do have a timing light that displays total timing and engine rpm.
My truck came from the factory with a 454. The original carb has been replaced with an Edelbrock 1406 with an electric choke at some point.
I read to use the manifold vacuum port (drivers side on the 1406) to adjust the mixture screws and should expect to see close to 20 in Hg at the proper setting. Is this correct?
What should the idle and "high" idle speeds be set to? I understand to let the engine get up to temperature and to remove and plug the vacuum advance hose coming off the distributor while setting timing and idle speeds.
Thank you very much for taking the time to read this post and for responding if you happen to know the information that I am seeking. Also, I would like to thank any veterans who read this for their service to our great country.
