| [GMCnet] New Spark Plugs...AC Delco R46SZ? [message #95347] |
Wed, 11 August 2010 15:51  |
kelvin
Messages: 608
Registered: February 2004
Location: Eugene, OR
Karma:
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Senior Member |
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Back when I installed a new set of plugs the general consensus was that
the ACDelco R46SZ were a good choice. Considering I've had them in
there a bit longer than I should have and the coach still runs great I'm
a believer. About 12,000 miles on these - and yes... they've overdue
for a change.
I remember there was a recommendation for gapping, too. Some suggested
a big gap and others said smaller. I'm running one of Dick Patersen's
HEIs on my '73 455, if that matters. Hard to measure what the gap is
now and I didn't keep good records when I first started on this thing...
And has spark plug technology changed enough that the recommendation is
different now, 7 years later?
Anyway...
What recommended gap for the R46SZ
What plug might be better.
Thanks,
Kelvin
'73 23' in Eugene, OR
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