Author Topic: 772 fans and unstamped fans  (Read 20170 times)

ZLP955

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Re: 772 fans and unstamped fans
« Reply #15 on: October 15, 2014, 08:52:52 PM »
Is it worth starting a list of fan numbers and dates versus assembly plant, build date and engine RPO?
The only drawback is that it's virtually impossible to say with certainty if a fan is original to the car, but maybe by contributing our data we can see a pattern (or not) in dates and usage?
Tim in Australia.
1969 04A Van Nuys Z/28. Cortez Silver, Dark Blue interior, VE3, Z21, Z23, D55/U17, D80, flat hood.
Sold at Clippinger Chevrolet in Covina, CA.
AHRA Formula Stock at Lions Dragstrip, NHRA E/MP at Pomona Raceway

ko-lek-tor

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Re: 772 fans and unstamped fans
« Reply #16 on: October 15, 2014, 11:06:16 PM »
I really should not contribute as I am not sure this fan is original, but I believe it is as some stuff was in trunk(engine was gone when I got the car) 12B Nor X22. Here it is :
Hayes-Albion fan, Schwitzer clutch 10-16-68, also an extra Eaton unit FWIW.
Bentley to friends :1969 SS/RS 396 owned 79
1969 SS 350 (sold)
1969 D.H.COPO replica 4spd. owned since 85
1967 302 4 spd 5.13

ko-lek-tor

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Re: 772 fans and unstamped fans
« Reply #17 on: October 15, 2014, 11:08:41 PM »
more
Bentley to friends :1969 SS/RS 396 owned 79
1969 SS 350 (sold)
1969 D.H.COPO replica 4spd. owned since 85
1967 302 4 spd 5.13

KurtS

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Re: 772 fans and unstamped fans
« Reply #18 on: October 16, 2014, 12:45:43 AM »
Guys,
What's the distance between the mounting points on your clutches? This is something I've been meaning to add to the article for a while...
Thanks bergy for the pic to modify. :)

Tim,
As the article says, no pattern.
Kurt S
CRG

ZLP955

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Re: 772 fans and unstamped fans
« Reply #19 on: October 16, 2014, 09:27:29 AM »
As the article says, no pattern.
No worries, no point in compiling data if CRG already established that; so no pattern at either assembly plant?
Tim in Australia.
1969 04A Van Nuys Z/28. Cortez Silver, Dark Blue interior, VE3, Z21, Z23, D55/U17, D80, flat hood.
Sold at Clippinger Chevrolet in Covina, CA.
AHRA Formula Stock at Lions Dragstrip, NHRA E/MP at Pomona Raceway

69Z28-RS

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Re: 772 fans and unstamped fans
« Reply #20 on: October 16, 2014, 01:31:31 PM »
Guys,
What's the distance between the mounting points on your clutches? This is something I've been meaning to add to the article for a while...     Thanks bergy for the pic to modify. :)

Kurt,

I measured mine this morning; it was sort of difficult with the clutch mounted to the fan, but I think I got a good measure at 1.5" (or very close to that).

Sch Prod Date       Model       Fan PN(date)   Fan PItch       Clutch (date)            Mnt Pt. Distance
09C (18Sept69)           Z28        3947772 (H69)     2.25"         EATON CV (H21J)          1.5"
09C 69Z28-RS, 72 B 720 cowl console rosewood tint
69 Corvette, '60 Corvette, '72 Corvette
90 ZR1 red/red #246, 90 ZR1 white/gray #2466
72 El Camino, '55-'56-'57 Nomads, '55-'57 B/A Sedan

HawkX66

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Re: 772 fans and unstamped fans
« Reply #21 on: October 17, 2014, 12:23:34 PM »
I pulled the fan off my motor last night. Here's what I came up with for pics/measurements...

 Kurt, It looks like 1 1/8" for the mounting points distance: (edit, just realized you wanted it with the fan removed from the clutch. I'll try and do that tonight..)



Fan blade height looks like 2 1/2" or maybe 1/16" less, but that could be just it showing it's age... The rest seem consistent.







Dave
69 SS396 X66 L34 M21 BS
Z23 711 U17 Hugger Orange
Semper Fi!

bergy

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Re: 772 fans and unstamped fans
« Reply #22 on: October 17, 2014, 01:15:11 PM »
short shaft = 1 3/8"   Long shaft = 1 5/8"   Big blocks often need every bit of that 1/4" difference!

69Z28-RS

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Re: 772 fans and unstamped fans
« Reply #23 on: October 17, 2014, 01:19:48 PM »
It's hard to measure with the fan installed.. :)   I measured 3 or 4 times and got different values each time...  I may have to remove the fan and do it right.. OR just take your word for the 1-5/8".. :)
09C 69Z28-RS, 72 B 720 cowl console rosewood tint
69 Corvette, '60 Corvette, '72 Corvette
90 ZR1 red/red #246, 90 ZR1 white/gray #2466
72 El Camino, '55-'56-'57 Nomads, '55-'57 B/A Sedan

bergy

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Re: 772 fans and unstamped fans
« Reply #24 on: October 18, 2014, 01:55:36 AM »
Big Block is the short shaft

KurtS

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Re: 772 fans and unstamped fans
« Reply #25 on: October 18, 2014, 04:34:13 AM »
And if the BB has a 4-core rad, it must be a tight fit....
Kurt S
CRG

HawkX66

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Re: 772 fans and unstamped fans
« Reply #26 on: October 27, 2014, 11:23:06 PM »
Here's the measurement pic for you Kurt...

Dave
69 SS396 X66 L34 M21 BS
Z23 711 U17 Hugger Orange
Semper Fi!

BULLITT65

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Re: 772 fans and unstamped fans
« Reply #27 on: October 28, 2014, 04:44:11 AM »
I looked pretty close at mine and I couldn't find any numbers other than the date that I posted. Kurt and I had talked about it quite a while back and his feelings were it was original and he wasn't surprised it didn't have the stampings. Gary, your car and mine are pretty close in dates. Mine rolled off the line on August 22, 1969. There's no evidence that the fan was repainted at any point and I know positively it hasn't been painted since 1982.
I'll take another look when I get home tonight, but I seriously doubt I'm going to find anything.

Sarge your car and my car are "pretty close" my NCRS production date is 8/19 AND I have the same fan as you on my Z.  Interesting....
1969 garnet red Z/28 46k mile unrestored X77
-Looking for 3192477 (front) spiral shocks 3192851 (rear)
-Looking for an original LOF soft ray windshield
-Looking for original Delco side post negative battery cable part # 6297651AV

69Z28-RS

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Re: 772 fans and unstamped fans
« Reply #28 on: October 28, 2014, 12:44:22 PM »
Austin,

Your fan is the same, but not the clutch is it?   ie.  Is your 'fan to pump' distance on your clutch 1-3/8" or 1-5/8"?
09C 69Z28-RS, 72 B 720 cowl console rosewood tint
69 Corvette, '60 Corvette, '72 Corvette
90 ZR1 red/red #246, 90 ZR1 white/gray #2466
72 El Camino, '55-'56-'57 Nomads, '55-'57 B/A Sedan

BULLITT65

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Re: 772 fans and unstamped fans
« Reply #29 on: October 28, 2014, 03:14:26 PM »
I wish I was closer to the car to take a measurement for you. I would only be guessing that it has the longer distance at this point. (My pics don't have a measurement in them for that). My point was that at the least both cars received the same fan. There are other guys out there with 08C cars, but I unsure if they still have the original fan or clutch for that matter.
1969 garnet red Z/28 46k mile unrestored X77
-Looking for 3192477 (front) spiral shocks 3192851 (rear)
-Looking for an original LOF soft ray windshield
-Looking for original Delco side post negative battery cable part # 6297651AV

 

anything