Arch,
I solved this same problem this past summer when I was trying to figure out
how to get better cooling at idle. One mine the shroud ended just at the
front of the fan blades. After querying the group I found that mine was
missing an essential part of it's shroud. I found two easy ways to correct
it without spending big bucks. The first was to purchase an extender block
to extend the fan shaft so the fan blades would stick far enough into the
existing shroud to create the necessary ducted fan effect. This method
would have worked just fine but would have cost about 10 bucks. I then
looked around the shop for some rubber or plastic of about the right degree
of stiffness and found that I had a leftover piece of formica which was
just right (but it wasn't quite the right shade of green). I then cut a
strip about 2 1/2" x 3' and wrapped it around the existing bezel to extend
it to about even with the rear of the fan blades. I found that I wouldn't
need to remove it to change belts so I just fastened it in place with some
sheet metal screws.
All that's necessary to get full cooling is to have the blades enclosed
within a duct so do it the easy way and save your dollars for something
important like a new dash or efi.
Enjoy
Dick
>
>Date: Wed, 20 Oct 1999 11:56:19 EDT
>From: Gcbr
>Subject: GMC: Parts question for the day
>
>GMCers
>
>OK the burning question for the day. Has anybody replaced the rubber
>piece thats attached to the radiator fan shroud. Part $# 410807.
>Cinnabar tells me they dont have it and to replace it with a $390
>one piece fiberglass shroud. I would also like a new band and spring
>but I can make that if I have to. Any thoughts will be listened to
>with open ears.
>
>Take Care
>Arch
>
>------------------------------
>
>Date: Wed, 20 Oct 1999 12:19:27 -0400
>From: "Bartz, Paul"
>Subject: RE: GMC: Parts question for the day
>
>Arch:
>
>Contact Frank Jenkins and see if he can help you:
>
> Frank's Auto & Fleet Service, Frank Jenkins, 18214 N.E. 21st Street,
>Gainesville, FL 32609 (352) 485-1397 - GMC Fiberglass & Aluminum
>Fabrication. Dash, Fan Shroud, Lower Dash Gauge Panel, Grill, Fender Flares,
>& Aluminum Bumper Tool Boxes, Front and Rear.
>
> Paul Bartz
>
>From: Gcbr [mailto:Gcbr]
>Sent: Wednesday, October 20, 1999 11:56 AM
>
>GMCers
>
>OK the burning question for the day. Has anybody replaced the rubber
>piece thats attached to the radiator fan shroud. Part $# 410807.
>Cinnabar tells me they dont have it and to replace it with a $390
>one piece fiberglass shroud. I would also like a new band and spring
>but I can make that if I have to. Any thoughts will be listened to
>with open ears.
>
>------------------------------
>
I solved this same problem this past summer when I was trying to figure out
how to get better cooling at idle. One mine the shroud ended just at the
front of the fan blades. After querying the group I found that mine was
missing an essential part of it's shroud. I found two easy ways to correct
it without spending big bucks. The first was to purchase an extender block
to extend the fan shaft so the fan blades would stick far enough into the
existing shroud to create the necessary ducted fan effect. This method
would have worked just fine but would have cost about 10 bucks. I then
looked around the shop for some rubber or plastic of about the right degree
of stiffness and found that I had a leftover piece of formica which was
just right (but it wasn't quite the right shade of green). I then cut a
strip about 2 1/2" x 3' and wrapped it around the existing bezel to extend
it to about even with the rear of the fan blades. I found that I wouldn't
need to remove it to change belts so I just fastened it in place with some
sheet metal screws.
All that's necessary to get full cooling is to have the blades enclosed
within a duct so do it the easy way and save your dollars for something
important like a new dash or efi.
Enjoy
Dick
>
>Date: Wed, 20 Oct 1999 11:56:19 EDT
>From: Gcbr
>Subject: GMC: Parts question for the day
>
>GMCers
>
>OK the burning question for the day. Has anybody replaced the rubber
>piece thats attached to the radiator fan shroud. Part $# 410807.
>Cinnabar tells me they dont have it and to replace it with a $390
>one piece fiberglass shroud. I would also like a new band and spring
>but I can make that if I have to. Any thoughts will be listened to
>with open ears.
>
>Take Care
>Arch
>
>------------------------------
>
>Date: Wed, 20 Oct 1999 12:19:27 -0400
>From: "Bartz, Paul"
>Subject: RE: GMC: Parts question for the day
>
>Arch:
>
>Contact Frank Jenkins and see if he can help you:
>
> Frank's Auto & Fleet Service, Frank Jenkins, 18214 N.E. 21st Street,
>Gainesville, FL 32609 (352) 485-1397 - GMC Fiberglass & Aluminum
>Fabrication. Dash, Fan Shroud, Lower Dash Gauge Panel, Grill, Fender Flares,
>& Aluminum Bumper Tool Boxes, Front and Rear.
>
> Paul Bartz
>
>From: Gcbr [mailto:Gcbr]
>Sent: Wednesday, October 20, 1999 11:56 AM
>
>GMCers
>
>OK the burning question for the day. Has anybody replaced the rubber
>piece thats attached to the radiator fan shroud. Part $# 410807.
>Cinnabar tells me they dont have it and to replace it with a $390
>one piece fiberglass shroud. I would also like a new band and spring
>but I can make that if I have to. Any thoughts will be listened to
>with open ears.
>
>------------------------------
>
