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Spark plugs?

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Brownie289

Contributing Member
Was looking at crusader plugs the AC Delco MR43T look shorter than the MR43LTS which ones would be right for a 80s era 454 model 350?

Thanks!
 
I was introduced to them by a mercruiser master mechanic decades ago.....and haven't had an issue with them in any boat engine
 
I have used the NGK's for years in my '95 454's with no issues. Currently i'm using the AC Delco just beacuse they are stainless. A little more $ but less rust.
 
I doubt the Delco plugs are stainless....they used to have a nickel coating which did very well repelling the corrosion....

:eek:
 
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