Dedicated to the Promotion and Preservation of American Muscle Cars, Dealer built Supercars and COPO cars. |
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#20
02-07-2018, 09:27 PM
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The T stands for taper....the spark plug itself is tapered to match the taper of the spark plug hole in the head where the plug screws in and there for does not use a crush ring to seal tight to the head like an R43 or R44 does.
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 1970Camaro Z28 
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Threaded Mode