Re: {Chrysler 300} 300C 392 block plug size

[John Grady <jkg@xxxxxxxxxxxxxxxxx>]

even better , hot hot heads has machined ones with a step held by a SS bolt into a T bar arrangement, like a flybolt anchor . Has O ring 

Today’s mechanics do not know how to set those .Has to be hit  dead center just hard enough, ball peen hammer , (which hit is pretty hard ) if not set they fall right out  

Happened to me twice  , especially the smaller ones in head , very first run , 2 miles from home . Much mayhem ensued . 

On Jul 17, 2025, at 12:14 PM, Ray Jones <1970hurst@xxxxxxxxx> wrote:



IDK. But, whichever size, install Marine Brass plugs. They won't rot like steel ones.

On Wed, Jul 16, 2025 at 11:36 PM 'leslie miklas' via Chrysler 300 Club International <chrysler-300-club-international@xxxxxxxxxxxxxxxx> wrote:

Can anyone tell me offhand the correct size of 300C 392 block plugs ?

1-5/8" ? , 1-41/64" ?

 

Thanks

Jeff Miklas

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Ray Jones. Y'all come on down an see us. Ya hear?

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