How does one backdate the heater?
 

Hi, has anyone seen a tech article for this project? Thanks in advance for pointing me in the right direction.

Normally this refers to using heater tubes that connect to the fan shroud, one right behind the distributor, and another is the analogous location on the passenger side of the engine. The engine fan therefore pushes the air over the heat exchangers and into the cabin. Normally on ~75 on cars, the heat is pushed from a blower mounted over the driver side bank of cylinders.

Backdated:
http://www.pelicanparts.com/pmpre/im...ngine_9-04.JPG
from http://forums.pelicanparts.com/showthread.php?s=&threadid=202761&perpage=20&highl ight=backdated%20heat&pagenumber=2

Look for Superman's post on this thread, it shows stock and backdated heat: http://forums.pelicanparts.com/showthread.php?s=&threadid=196281&highlight=backda ted+heat

Try searching if you need more info.