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I hope this seems relevant to the question and isn't hijacking the thread. I have been wanting to ask this; I remember hearing some 440's were prone to overheating. Was this a particular production year and what was the cause. Thanks!



None more than any other. 440 never really changed much. Head design changed a bit and compression ratios went up and down but other than that no real remarkable changes to the block, only stuff that really changed was the bolt on stuff.



There was a stiffening rib added to the lwr rh side of the block at around 1969. The #3 main bearing was machined for a larger trust surface in the mid 70's (1973?). Then there's the larger cooling passages added, known as the "figure 8" as seen by the bigger passages/port at the cylinderhead deck surface. Most importantly is the varying amount of cast iron at the "saddle support area".............

OR, just go here and read all about it..........

http://www.440source.com/blockinfo.htm


Nice link, bookmarked it.