My Guess would be to get plugs for a mid year1980's Chevrolet Monte Carlo SS and/or Luxery Sport. Compare those to any trucks of the same model year with to get a heat range to your liking.
http://www.sparkplugs.com/results_app.asp?productTypeID=1&AAIA=1419904 ( 1985 Monte CarloSS) AC Delco Standard plug---R44TS--> came straight from the Auto Zone page using a 1985 Monte Carlo SS 305 HP as my vehicle. From: "John Nasta" <[EMAIL PROTECTED]> Date: 2006/07/28 Fri PM 02:59:48 EDT To: "The Chevelle Mailing List" <[email protected]> Subject: Re: [Chevelle-list] spark plugs Ok, I found out that 14014416 heads are from a 1980-85 305 CID engine. So, knowing that, can someone tell me which number plugs to use? Thanks, John Nasta
