valve cover clearance

I haven't heard of a shorter blower motor. I did see an article once on how to offset the fan inside the heater box so that the blower motor didn't stick out as far. I searched for it on the internet and couldn't find the article though.

check them out
http://www.bigblockdart.com/forum/showthread.php?2092-How-To-for-Heaterbox-Motor-Modification