Those production numbers aren't for truck engines, only passenger cars.
I don't know of any records of the number of truck engines produced.
The 1961 passenger car engines are greatly sought after by restorers. Other than that, the most valuable would be the high horse engines. The 1962 409/409, 63-64 425hp, 63-65 400hp.
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63 Impala*66 Chevelle SS*69 Chevelle*69 C10 Stepside*71 Cheyenne 20*72 Chevelle
Parts for sale:
http://www.angelfire.com/trek/mr409/items4sale.html
[This message has been edited by bobs409 (edited March 19, 2002).]