318 heads

toolmanmike said

I just need to walk out in my garage. I "had" 2 sets of Magnum heads with no cracks as well. The cracked stories give those heads a bad image.

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I've had a few sets of each that were not cracked, but I've seen more that were. So, there's something to the "story" I do believe. I'll put it this way, You can see a clear difference between say early to mid 70s LA heads and 302 and Magnum heads as for thickness. It's pretty apparent.