Author Topic: 4939899 fan clutch????  (Read 424 times)

x66 714

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4939899 fan clutch????
« on: September 03, 2016, 12:09:30 AM »
I have 2 fan clutches stamped 4939899. One is 041-69 & the other is 218-69. Is this a number that was used for a Camaro? Looked on the internet but nothing definitive....Thank you, Joe
See America's First, Chevrolet

1968 Z/28 Corvette Bronze. Black Hounds Tooth. 02E Los Angeles born 3/13/1968 pnt OO
1969 SS396 Yellow/Yellow 08E Norwood born 8/28/1969 pnt 76E

ZLP955

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Re: 4939899 fan clutch????
« Reply #1 on: September 07, 2016, 10:32:49 AM »
Do they have 'Delco Prod Div GMC' and 'Dayton Ohio USA' on the front? I'll have to check my AIM for the number you stated, but recall that was the smaller diameter clutch unit, with the short fins, used on non-solid lifter applications - possibly with A/C or HD cooling. The Julian date codes are consistent with mid and late 1969 production.
Tim - 04A VN '69 z/28 69-69 715 ex-E/MP

x66 714

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Re: 4939899 fan clutch????
« Reply #2 on: September 07, 2016, 11:28:13 AM »
Yes. They both have that lettering. Both are stamped CH & both are on 772 fans.
I know they're not correct for my 69 396 car w/air..Joe
See America's First, Chevrolet

1968 Z/28 Corvette Bronze. Black Hounds Tooth. 02E Los Angeles born 3/13/1968 pnt OO
1969 SS396 Yellow/Yellow 08E Norwood born 8/28/1969 pnt 76E

ZLP955

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Re: 4939899 fan clutch????
« Reply #3 on: September 25, 2016, 12:01:57 AM »
Joe I meant to follow up on this earlier. The '69 AIM calls up 4939899 under RPO K02. Sheet A1 lists the clutch numbers and descriptions as follows:

3937780 CLUTCH ASM "327" ENG
3937782 OPT
4939899 OPT
3946049 "350", "396" ENG
So that appears to indicate that 4939899 would not be for the 327, 350 or 396 engines, although the 2 other 'OPT' versions may be related to another RPO?
Also there is a note '6' against 4939899 on the AIM, but my copy has poor print definition in the revision history, and I can't make out what note 6 says.

The fan is also shown on K02/A2 and there are 2 listed:
3947772 BLADE ASM-FAN
3956684 OPT ("327", "350" ENG ONLY)
So if your fan and clutch were originally together, that also appears to indicate they weren't on a 327 or 350.
Tim - 04A VN '69 z/28 69-69 715 ex-E/MP

x66 714

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Re: 4939899 fan clutch????
« Reply #4 on: September 25, 2016, 02:35:33 AM »
Thank you....Joe
See America's First, Chevrolet

1968 Z/28 Corvette Bronze. Black Hounds Tooth. 02E Los Angeles born 3/13/1968 pnt OO
1969 SS396 Yellow/Yellow 08E Norwood born 8/28/1969 pnt 76E