Blower motor help

[noclrnce]

I have an 83 k10 with no ac. The blower motor doesn't seem like it puts out much air thru the defrost vents. When I move it to the floor it blows fairly decent on high. Is there something I  should be checking to get more air thru the defrost?


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[Stewart G Griffin]

i'm having the same issue.  Check this thread out:
http://forum.73-87chevytrucks.com/smforum/index.php?topic=33785.0