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info about these PRESTOLITE plugs

Started by Nacho-RT74, September 07, 2012, 08:41:21 AM

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Nacho-RT74

I found on an old dealer shop some NOS PRESTOLITE spark plugs and CAN'T FIND any info about IT. Stamped on it, reads 14E22.

some clue ? looking at the porcelain cone, inside, they look to be colder than RJ12YC, but dunno
Venezuelan RT 74 400 4bbl, 727, 8.75 3.23 open. Now stroked with 440 crank and 3.55 SG. Here is the History and how is actually: http://www.dodgecharger.com/forum/index.php/topic,7603.0/all.html
http://www.dodgecharger.com/forum/index.php/topic,25060.0.html