Good info 413!An easy way to spot a poly with hemi potential is the existence of a bolt on lifter valley tray under the intake.The 318 poly and it's earlier variants use the intake manifold as a lifter valley cover(similar to later LA small blocks).When you find a poly with a valley tray,you can further ID it by either the stamped pad in front of the intake and by casting numbers.Most if not all block casting numbers are on the back of the block in the bellhousing area.This can be difficult to see if the trans is attached!You can find casting numbers at Thehmi.com or hot head website,some poly and hemi blocks carry the same casting number.The actual use of the engine is on the stamped pad. http://www.thehemi.com/castings.php
RT