Does the block have two bolt or four bolt mains?
3970010 =
1. A 302ci, 1969 Z-28 Camaro (4 bolt mains)
2. A 327ci, 1969 for trucks and industrial (2 bolt mains)
3. A 350ci, from 1969 to 1980 (2 and 4 bolt main variations)
source =
http://www.mortec.com/castnum.htm
Can't find a reference to the head castings. :-(
-Deano