Author Topic: 837 alternator fan  (Read 2720 times)

DT

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837 alternator fan
« on: June 02, 2013, 12:24:34 PM »
Are there any differences in alternator fans???  Did GM use the same fans for #834, #837 alternators??  Thx
Donny

Ed_B

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Re: 837 alternator fan
« Reply #1 on: June 04, 2013, 02:15:18 PM »
The 834 and 837 alternators used the same fan, P/N 1966990.

Ed

DT

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Re: 837 alternator fan
« Reply #2 on: June 04, 2013, 08:18:25 PM »
Once again, thanks Ed !!
Donny

ko-lek-tor

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Re: 837 alternator fan
« Reply #3 on: June 05, 2013, 03:09:31 AM »
Ed, I see many 837 alternators with the "hook blade" , but my 837 had never been apart until I rebuilt it. It has the same fan as my 834(like you said). I always wondered if it was correct as it was not the hook type, but assumed it was because it was all original on my car when I bought it. Another post reply by JohnZ concerning 837 pulley finish started by DT shows the hook fan. Could you clarify why this is? My engine is a 396,not a Z.
Putting you First...Keeps me First. Talent on loan from God. Helping the hobbyist and exposing the fraud
1969 SS/RS 396 coupe Hugger Orange X22 712 bought in 79
1969 SS 350 coupe LeMans Blue 713 bought in 79
1969 307 4spd. coupe Daytona Yellow 711 bought in 85

Ed_B

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Re: 837 alternator fan
« Reply #4 on: June 05, 2013, 01:25:52 PM »
Can you post a picture of the fan you're referring to? Also, have you read THIS and THIS?

Ed

DT

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Re: 837 alternator fan
« Reply #5 on: June 08, 2013, 02:33:22 AM »
Here is a picture of my alt fan.  Does it look like an 834 or 837 ??  Thx
Donny

69Z28-RS

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Re: 837 alternator fan
« Reply #6 on: June 08, 2013, 04:14:26 AM »
It *appears* the same as the fan in my original 837 alternator in the photo...
Gary W / 09C 69Z28-RS, 72 B 720 cowl console rosewood tint
69 Corvette convertible, silver/black 350 hp,
60 Corvette white/red, 72 Corvette coupe, '70 Mach I 
90 ZR1 red/red #246, 90 ZR1 white/gray #2466
72 El Camino, '55-'56-'57 Nomads, '55-'57 B/A Sedan

DT

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Re: 837 alternator fan
« Reply #7 on: June 08, 2013, 01:08:07 PM »
OK, Thx
Donny

zman1969

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Re: 837 alternator fan
« Reply #8 on: April 30, 2014, 12:19:51 PM »
older thread but I was wondering how many 837's had other than the "hook blade" as pictured above? pictures?
Rich

69 RS/Z DZ302 Daytona bumble bee
69 T/A clone LS6/6sp
69 Nova SS 396

JohnZ

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Re: 837 alternator fan
« Reply #9 on: April 30, 2014, 02:12:33 PM »
older thread but I was wondering how many 837's had other than the "hook blade" as pictured above? pictures?

I wouldn't think any did - the alternator part number defined several characteristics, and if any of them changed, the alternator assembly part number changed:

Current output and curve

Physical "clocking" of front and rear case castings

Type of fan

Type of pulley

None of those attributes changed during the 1969 model year run, and neither did the alternator part number.

'69 Z/28
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z28z11

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Re: 837 alternator fan
« Reply #10 on: May 06, 2014, 12:39:46 AM »
How about the 814 from '68 ? I've been chasing one for years - prices keep getting somewhere just above stratospheric and below sub orbital - I've nearly thrown in the towel.
1968 Z28 M21/U17 BRG/W
1969 Z28 X77/M20/VE3 LeMans/W
1969 L78 X66/N66 Cortez/BVT
1969 Z11 L48/M35/C60/C06

zman1969

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Re: 837 alternator fan
« Reply #11 on: June 03, 2014, 12:21:20 PM »
FWIW I just bought a used alternator off C/L was off the guys 71 Nova - it had the hook blade fan on it. apparently it was a common part
Rich

69 RS/Z DZ302 Daytona bumble bee
69 T/A clone LS6/6sp
69 Nova SS 396

69Z28-RS

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Re: 837 alternator fan
« Reply #12 on: June 03, 2014, 01:46:36 PM »
After 40+ years of use and rebuilding, swapping, etc...  any combination is possible in a used part.  I wouldn't put much stock in what I found in an ebay part or C/L part.
Re the 814..  didn't I just see one on ebay yesterday?
Gary W / 09C 69Z28-RS, 72 B 720 cowl console rosewood tint
69 Corvette convertible, silver/black 350 hp,
60 Corvette white/red, 72 Corvette coupe, '70 Mach I 
90 ZR1 red/red #246, 90 ZR1 white/gray #2466
72 El Camino, '55-'56-'57 Nomads, '55-'57 B/A Sedan

68Zproject

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Re: 837 alternator fan
« Reply #13 on: June 03, 2014, 02:48:00 PM »
How about the 814 from '68 ? I've been chasing one for years - prices keep getting somewhere just above stratospheric and below sub orbital - I've nearly thrown in the towel.

I too had/have been looking quite a while.  I found one that needed rebuilding fairly reasonably priced, but it was the wrong date for my car.  So if anyone finds a date that's good for my car, I'd be willing to swap mine if that date works.
68Z28

cook_dw

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Re: 837 alternator fan
« Reply #14 on: June 03, 2014, 03:40:55 PM »
Whats your date you have and the one you need?
Darrell Cook
1967 LeMans Blue SS/RS L35 clone
1968 Rallye Green SS L78 - unrestored original
1968 Matador Red Z28