MO,,,presently on my Coronet I'm running a 491 lift cam, with "Autolite 63 plugs" with no pings and the 440 responds very good, but on my 69 440 6/pac GTX i was always using "Champion J13Y's" don't know if they still make that plug, and on my 68 383 Roadrunner i used Champion "J11Y's"
These cars all ran super fine,,,but then again,.....They're Mopars.
Jay,
65 Coronet 500.
From: MO <micher@xxxxxxxxxxxxxxx>
To: The 1962 to 1965 Mopar Mail List Clubhouse <1962to1965mopars@xxxxxxxxxxxxxxxx>
Sent: Sun, December 16, 2012 2:26:39 AM
Subject: Spark Plugs
I would like to know what the majority of the list members would use.
iT IS A 440 ENGINE WITH ABOUT 9.5/1 COMPRESSION. ( excuse caps )
about .. .475 lift cam, alum hi=riser and 750 cfm Holley , electronic
ignition. Road runner cast exh. manifolds. Thanks for your
input......................MO
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