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Old 03-13-2018, 03:38 PM   #6
BigRandy
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Join Date: Jun 2017
Location: San Antonio, Texas
Posts: 156
Re: Spark plugs 1974 \ 454 HEI?

Quote:
Originally Posted by Wrenchbender Ret View Post
Use the extended tip plugs. They are a big improvement over the old style recessed tip plugs. They are used in o-head valve engines only & will clear in all the normal o-head valve engines. Set the gap at .045. If they are tapered seats use R44ts or R45ts. Older engines used a flat seat with a gasket. R44S or R45S.
George
Well crap. I just received a set of R45T plugs that I ordered a few days go. I appreciate the note. It's exactly what I was looking for.

I'm waiting on the cap, rotor and wires to arrive and in no hurry so I'll see if I can exchange the plugs.

Many thanks.
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