crankshaft id

my crank has #3941174 can anyone tell me what this crank is from

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A google search revealed this:
http://www.prestage.com/Tech+Info/Casting+Numbers/314.aspx
http://www.kendrick-auto.com/chevrolet_crankshaft_casting_num.htm
http://www.racecheep.com/cranks.html
http://www.camaros.org/l30m20.shtml
Apparently they were used in the 307 or 327 engines.
Hope this helps.
David
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Great info. Thanks very much.

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