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#1
10-07-2024, 11:41 AM
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Radiator fan for 66 GTO
Im looking for a radiator fan for my 66, manual trans, No AC car. My original fan is beyond repair, bent and dented. Would a standard 7 blade 19.5 inch fan from the late 60's or early 70's car work? If so, is there a particular part number that would be ideal? I would prefer to find an original GM fan as opposed to a new aftermarket fan. I will be using the original pulleys, 8 bolt water pump, but a new cold case radiator.
Thanks |
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#2
10-07-2024, 05:43 PM
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If your car did not have a 7 blade fan then Ames performance engineering ( sponsors of this site) have a 7 blade 17.5” fan.
It does not seem like a 19” will fit, but I would call their tech line tomorrow to confirm that. I believe a 7 blade 17.5” is better then a 19” five blade.
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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#3
10-07-2024, 05:49 PM
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You need the taller 17.5” heavy duty radiator core to have enough room to use the 19.5” fan.
If you have the 15.5” standard radiator core you’re probably limited to about an 18” fan. Years ago I scavenged a couple of 7 blade 19.5” clutch fans from various 1970s B and F-body cars, I’m using one on my ‘64 Le Mans with the 17.5” radiator and matching steel A/C shroud.
__________________
1964 Tempest Coupe LS3/4L70E/3.42 1964 Le Mans Convertible 421 HO/TH350/2.56 2002 WS6 Convertible LS1/4L60E/3.23 |
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#4
10-07-2024, 05:53 PM
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Thanks, Ill quit looking for a 19.5 and go back to looking for a 17.5 fan. 19.5's are probably more common, but I'm sure I'll run across a 17.5 that works.
Thanks! |
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#5
10-07-2024, 06:14 PM
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468/TKO600 Ford thru bolt equipped 64 Tempest Custom. Custom Nocturne Blue with black interior. |
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#6
10-07-2024, 07:01 PM
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Quote:
Aftermarket is an option, but I would prefer original GM. Does anyone know which cars 17.5 or 18 inch fans would have come on? I have a junkyard not too far from me with a decent inventory of older cars, might be something there. |
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#7
10-07-2024, 08:48 PM
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There are 2 others made by OER with different hub measurements. I think I linked the wrong one
__________________
468/TKO600 Ford thru bolt equipped 64 Tempest Custom. Custom Nocturne Blue with black interior. |
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#8
10-08-2024, 04:25 AM
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#9
10-08-2024, 08:19 AM
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Did you look at the fans that our host offers for GTO's?
I see two options in the catalog.
__________________
"Artificial intelligence is no match for natural stupidity". 1966 GTO Post Coupe, 467ci. N/A Pump gas, best 1/4 11.6 118mph 1966 GTO Post Coupe, "The Bright Idea" 535ci. N/A Pump gas, best 1/4 9.56 139mph |
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#10
10-08-2024, 08:21 AM
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#11
10-20-2024, 06:09 PM
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Just to revisit this quickly, my 66 GTO only has the fan guard, not a shroud. Even with just the guard, the 19.5 wont work?
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#12
10-20-2024, 07:24 PM
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Without the limitation of a shroud the 19.5” fan should work.
Even the 19.5” shroud can be notched at the bottom to clear the bottom hose and transmission lines.
__________________
1964 Tempest Coupe LS3/4L70E/3.42 1964 Le Mans Convertible 421 HO/TH350/2.56 2002 WS6 Convertible LS1/4L60E/3.23 |
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