How can I tell if I have a 455 Oldsmobile engine?

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Sharpshooter
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I've got a few engines lying around that I'm going to sell and one of them is a 1970 455 Oldsmobile, but I'm not sure which one it is. Is there a way to identify it by the casting numbers on the head or the block or something?
 

cyberslider

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The head casting "numbers" should be letters (like "C" or "E") if they are 455 heads, I believe the smaller blocks (403, 350, etc) have actual numbers (like "3" or "8")

Edit: Also - a big block (400, 425, 455) measures 14" between the heads at the manifold base, small blocks (330, 350, 403) measure 12"
 

HMFIC

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I've got a few engines lying around that I'm going to sell and one of them is a 1970 455 Oldsmobile, but I'm not sure which one it is. Is there a way to identify it by the casting numbers on the head or the block or something?

When you run it over 6000 RPM for about a half hour and end up spinning a main bearing and luckily not blowing the whole bottom end out.

At least that's what I did...

Olds motors are notorious for blowing all the oil up to the top end at higher RPM. But I still love 'em. Great torque.
 

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