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08-07-2011, 08:20 PM
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#1 |
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Registered User
Join Date: Jun 2011
Location: Chickasha, Oklahoma
Posts: 99
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Factory fan questions
Guys,
did the factory fans for a 1977 truck use a spacer or where they just bolted to the pulley? I am trying to go back original with my truck and when I bought it it had an aftermarket fan.
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1977 GMC Desert Fox (PROTOTYPE) www.sassnet.com Cowboy action shooting http://67-72chevytrucks.com/vboard/s...d.php?t=470241 Desert Fox Build thread |
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08-07-2011, 08:52 PM
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#2 |
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Registered User
Join Date: Apr 2011
Location: Just outside Sin City
Posts: 239
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Re: Factory fan questions
They had a fan clutch from the factory. The spacer is only used with the flex fans.
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Bruce 73 Stepside, 74 Blazer, 75 1 Ton, 66 Barracuda and a 05 Electraglide DD http://i56.photobucket.com/albums/g1...Rusti192-1.jpg |
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08-07-2011, 09:32 PM
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#3 |
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Registered User
Join Date: Aug 2009
Location: S.C.
Posts: 1,593
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Re: Factory fan questions
IMO, clutch fan. I believe spacers were used to get the correct fan position in the shroud.
My '73 had an old fixed fan and about a 2" spacer.
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'86 C-30 dually, 454/tbh400 '73 K-20 350/350/205 (sold  )I'm kinda like duct tape- no real purpose, but handy to have around. |
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08-07-2011, 09:42 PM
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#4 |
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The One And Only !!!
Join Date: Jan 2007
Location: Hole in the woods Florida
Posts: 4,567
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Re: Factory fan questions
I bought my 74 from the original owner, It came with a clutch fan with no spacers.....
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93 Jeep XJ 88 Buick La Sabra Toys; 88 TA-GTA in the works.... 97 GMC Ext. Cab 502 Crate 5 Spd......Sucks Gas But Haulz Azz !  The primary function of an Engineer is to make it difficult for the Fabricator and impossible for the Mechanic. "Why go out preserved when you can go out beat up, worn out, sliding in sideways screaming, Holy Sh!t What A Ride" !!!
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08-10-2011, 07:21 AM
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#5 |
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78K & 79C Jimmys
Join Date: Nov 2009
Location: Ottawa Ont CANADA
Posts: 7,901
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Re: Factory fan questions
quick question
is it true the old 4 blade fans were on some kinda recall? my 78 burb threw a blade and it went threw the master lines to the valve/frame rail of course after all new lines,heard bang leaving a light,engine shook like crazy,no brakes rolled to a stop......was told about the 4 blade being common for this breakage?
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John 1978 GMCJimmy4X4-350/203 1979 GMCJimmy4X2-305/350 |
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08-10-2011, 08:17 AM
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#6 |
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Registered User
Join Date: Oct 2003
Location: houston, texas
Posts: 1,974
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Re: Factory fan questions
my 76 has a clutch 5 blade fan and no spacer
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2008 Silverado Z71 RCSB 1991 GMC Jimmy 4x4 1976 GMC Sierra C15 SWB |
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