M
Mikey78
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- Last seen
- Joined
- Apr 22, 2019
- Thunderbird Year
- 1966
Howdy Gang,
I bought some spark plugs for my 66 thunderbird. 390 4 barrel. The spark plugs they gave me were "correct" for the 390 engine but they were smaller than the ones in the block. The ones I bought fit a 5/8 socket(motorcraft plugs) The engine plugs fit a 13/16 socket.
I'm guessing she gave me the wrong plugs.
The plugs in the engine seem to be bigger? Am I having a brain fart? What am I missing here?
I bought some spark plugs for my 66 thunderbird. 390 4 barrel. The spark plugs they gave me were "correct" for the 390 engine but they were smaller than the ones in the block. The ones I bought fit a 5/8 socket(motorcraft plugs) The engine plugs fit a 13/16 socket.
I'm guessing she gave me the wrong plugs.
The plugs in the engine seem to be bigger? Am I having a brain fart? What am I missing here?
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