Brian Conway 264 Report post Posted December 23, 2013 Need some help picking the right temperature thermostat for my 69, 428, 4 speed. The shop manual does not clearly say which one to use so asking for a little help here. Bottom of the page; lower left is the section. Thanks, Brian Quote Share this post Link to post Share on other sites
Chris'69Mach 23 Report post Posted December 23, 2013 I would go with a 180* stat. The engine will run cooler and like you better for it :thumbup1: Quote Share this post Link to post Share on other sites
LindenBruce 27 Report post Posted December 24, 2013 Check out this link and scroll half way down the page. There are two temps ratings listed by Motorcraft, a 180 degree low temp thermo and a 190 degree high temp thermo. Take your pic based on your geographical location, engine mods, and radiator efficiency. B. http://www.428cobrajet.org/id-thermostat-housing Quote Share this post Link to post Share on other sites
