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Author Topic: 3917291 heads  (Read 4952 times)

pjbizjak

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3917291 heads
« on: February 12, 2010, 05:25:46 PM »
Does anyone know if GM had a slow-down period of casting the 3917291 heads? I've been looking for a set dated mid March 68, and it seems like there are lots of 67 castings and 68 May-June, but Jan Feb  and March 68 castings are almost non existant.
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68Zproject

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Re: 3917291 heads
« Reply #1 on: February 13, 2010, 05:50:29 AM »
Try Tracy Performance in MI?  He has lots of castings and dates.  Not cheap though.
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68Z28

opelitis1

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Re: 3917291 heads
« Reply #2 on: February 13, 2010, 12:47:08 PM »
Have a D3 8 bare casting - 1 only..  Close but no cigar..
T.
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pjbizjak

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Re: 3917291 heads
« Reply #3 on: February 13, 2010, 02:40:09 PM »
Thanks, my trim tag says 04A(1st week of April 08) so engine would have been assembled probably 3rd or 4th week of March 68.
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