1. 

   jimmy Low-Tech Dinosaur

   Any idea what year 455 head this is? 73 or 74?
   
   #1241860
   
   Thanks

    

   jimmy, Jan 19, 2004

   #1
2. 

   Smartin Guest

   Looks like a transition casting from 73-74
   
   
   1241860 - 73-74 455
   
   
   Here is the page I got it from:
   
   http://buicks.net/shop/reference/bigblock_casting_numbers.html

    

   Smartin, Jan 19, 2004

   #2
3. 

   jimmy Low-Tech Dinosaur

   Thanks, that was quick.
   
   And I saved that page for future reference.

    

   jimmy, Jan 19, 2004

   #3

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