Any tips to get more air from blower motor?

[79gmcc15]

Originally Posted by 875.3CHEVY

whats wrong when you can floor it and it gos to floor air.also i blocked off the passenger duct cause im miising it and the far left one,and man what a diff in flow.so i to am looking for this more aggressive blower motor.

Did you have vacuum hooked up to the ball on passenger side? I heard that if you don't,it can cause the change.

[nikwho]

Originally Posted by 79gmcc15

Did you have vacuum hooked up to the ball on passenger side? I heard that if you don't,it can cause the change.

Any way you can elaborate or show us a picture. my blower barely blows in heat or defrost mode. The vaccume line that comes out through the fire wall is hooked to nothing. Where does your's go?