79ramp
Full Access Member
- Joined
- May 28, 2017
- Posts
- 53
- Reaction score
- 25
- Location
- Everett, WA
- First Name
- Aaron
- Truck Year
- 1979
- Truck Model
- C30
- Engine Size
- 454
Trying to figure out a part number here. I have a 454 which came out of my '79 C30. The spark plugs I took out (which I did not save because I am a moron) were sized for a 13/16" socket. When I pick-up new plugs, they are sized for a 5/8" socket and the threads don't even reach the hole before the 'shoulder' of the plug hits the head.
I am going to hazard a guess that the heads are not original so I am planning to check the date code, etc. on the head when I get home. In the meantime I was hoping maybe someone here might have an idea as to what # plug I need. I typically run Champion copper plugs in all of my engines but I am not going to be picky here as I am not keeping this one (it is the old motor going back in the donor truck which gave up a fresh motor to my ramp truck).
The 5/8" plugs did fit in the motor I took out of the donor truck so I don't think it was a case of just the wrong plug.
I am going to hazard a guess that the heads are not original so I am planning to check the date code, etc. on the head when I get home. In the meantime I was hoping maybe someone here might have an idea as to what # plug I need. I typically run Champion copper plugs in all of my engines but I am not going to be picky here as I am not keeping this one (it is the old motor going back in the donor truck which gave up a fresh motor to my ramp truck).
The 5/8" plugs did fit in the motor I took out of the donor truck so I don't think it was a case of just the wrong plug.