Thread: 406 C3AE-V Cross bolt???

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The recess you see are the crossbolt bosses. Some of the 406's have em and some not. But the crossbolt mains could be original who knows??? Holman Moody did build quite a few 406's for NASCAR and boat racing back in the day so it could be original. Being the 406 was the test mule for crossbolted mains and the 427 casting anything is possible. Books can't dictate what went out the back door...and lots of stuff did. Hard to say. But for free??? Dang bud good deal there!!! Keep us posted and if and when you drill bit the cyls let me know what you find. There were less than 1000 406 cars produced. So there are not many left. And your block is a keeper and very rare. At best maybe half or less of those survived.

G.

Yep - there were some 406 engines built that had cross bolted mains - I had a late '63 XL 2 dr hardtop. The whole engine was a mish mash of strange parts, that included the mains plus 427 long style headers. These were not someone elses add-ons because I bought the car new. Unfortunately, in my infinite wisdom I traded the car for a new '65XL w/390/330 solid lifter interceptor engine - what a big disappointment after the 406 - that entire car was a Monday built piece of junk.