34.5 or 25 degree original clutch fan blade & #'s
02-19-2019, 03:23 PM
#1
34.5 or 25 degree original clutch fan blade & #'s
Looking for fan blade part #'s for 65-67 clutch fans, with and without AC. I don't know for sure if there were 34.5 pitch fans available from gm or not, any information of rivets or design of blades. thanks
Last edited by jamesalarson1; 02-19-2019 at 03:24 PM. Reason: change in information
02-19-2019, 04:17 PM
#2
Race Director
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C2 of the Year Finalist - Modified 2020
Welcome to the CF! Have you used the search function here? This fan subject has been covered, some with pics and narrative. 
Dennis
Dennis
02-19-2019, 06:06 PM
#3
02-19-2019, 10:32 PM
#4
Melting Slicks
Take a look online at what Paragon Reproductions has for fan blades. There's a lot of detail and pictures. Whether any or all of the GM part numbers they give are for original fans or for service replacements, I couldn't say.
02-20-2019, 10:17 AM
#5
I have looked at Paragon, as well as Long Island and a few others. I have found that venders are sometimes wrong and just an not clear about which fan blades were used on AC cars vs Non-AC and what was the exact pitch
02-20-2019, 10:23 AM
#6
from the December 83 parts book Have not seen anything regarding pitch of blades,generally 5 blade is no AC, 7 blade is with AC..
61 - 67 EXC. AC. 396,427 3770529 17" 5 Blade
63 - 66 W/AC 3931002 18" 7 Blade
61 - 67 EXC. AC. 396,427 3770529 17" 5 Blade
63 - 66 W/AC 3931002 18" 7 Blade
Last edited by MelWff; 02-20-2019 at 10:25 AM.
02-20-2019, 08:36 PM
#7
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Post the question over on the NCRS Technical Discussion Board (www.NCRS.org) and one of the midyear fan "gurus" over there can probably provide a link to a past "Restorer" article that has the detail you're looking for. The P&A30 Parts Book won't necessarily show what was used in production - it shows what was used to REPLACE production parts, and those were used to "functionally" replace production parts. 