[bigblockv6]

Originally Posted by Okiefromwatonga

Awesome thank you. That's exactly what I was wondering. I read over on stove bolt about different plugs and was in the dark about the vintage of the 432 so I thought I would ask. Does this look right? http://m.autozone.com/external-engin...&showymme=true

I actually have the correct set of AC Plugs with the newer superceeded number at home, Out of town right now but I'll be home Thursday and will get you the number. Also forgot to mention how to determine a magnum engine. It's all in the Cylinder heads, intake and exhaust manifolds. The ports are much larger and the intake manifold will always have a trapezoid base pattern on the manifold but there were non Magnum intakes on 1960-65 401 and 478 engines that also had the trapezoid base but those manifolds were a high rise a nd the Magnum intake is flatter. It safe to say all 432 engines were Magnums.