How common or rare were the 42 amp 881 alternators shows as a 2nd production run part in books? Dated 8 M 06 has big block pulley on it and a 6 spoke front.
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Re: 1100881 42 Amp Alternator
Very rare and if you find one it will be very $$ -
Re: 1100881 42 Amp Alternator
I spoke with john pirkle before he passed about a 42 amp alt and he said they are very hard to find and he estimated that if one was found and rebuilt it would be well over $1,000.Comment
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Re: 1100881 42 Amp Alternator
All------
I've yet to figure out what possible difference, other than part number, there could have been between an 1100833 and an 1100881. However, the 1100833 did not include a pulley or fan as part of the assembly. It MAY be that the 1100881 assembly included a pulley and fan. I doubt it, but it is possible.In Appreciation of John HinckleyComment
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Re: 1100881 42 Amp Alternator
Anthony------
1969 was a year of "transition" as far as alternator fans were concerned. Different applications may have used a few different fans.
There were MANY different pullies used for different applications. Some were used on both small blocks and big blocks depending on specific engine and other installed equipment. Some alternators were supplied with a pulley and, thus, could only be used for a specific application. Some alternators were supplied without a pulley and the correct pulley for the application was installed on the assembly line.In Appreciation of John HinckleyComment
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Re: 1100881 42 Amp Alternator
Dick------
I've considered that but with respect to clocking there should not have been any difference between early and late. So, with respect to early and late that should not account for a difference in part number.
However, there is something related to this that I've always wondered about. I believe that big blocks with and without power steering used different clocking for the alternator. But, there is no reported difference in alternator part number for cars with and without power steering. Could it be that the 1100833 was used for non-power steering applications and the 1100881 for those with power steering?
If the above is true, there would have needed to be 2 different alternators for 61 amp applications, too, so maybe these are the 1100825 and 1100882?
In any event, I'm far from certain that power steering and non power steering big block cars did use different clocking for the alternator. It just seems to me that they would have due to the completely different orientation of the alternator in each application.In Appreciation of John HinckleyComment
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Re: 1100881 42 Amp Alternator
In my book it shows
1 61 amp
1100825 alt as A/C or mag pulse
2 42 amp
1100833 427 base unit
1100859 350 base unit
1100881 2nd production 42 amp
2 61 amp* alt
1100882
1100884 as 2nd production
The asterisk by the 61 amp says that all 61 amps were used interchangeably. So what Joe stated above would seem to make sense about 2 different units for power steering and non power steering. Does anybody know if they had issues with the earlier built cars just using the 825 alt on both applications due to the alternator clocking? So which of the 2nd production alternators are for what application power steering and non power steering?Comment
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Re: 1100881 42 Amp Alternator
Anthony----
I have no information that different alternators were used for power steering or non-power steering big block applications. I'm just speculating that there might have been a clocking difference between the two applications. If so, there would have been different part numbers as assembly line folks did not get involved in "re-clocking" alternators.In Appreciation of John HinckleyComment
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Re: 1100881 42 Amp Alternator
Thanks Joe for all the info. Just wondering if any one else has anything to add? Would really like to know why they had 2 61 amp alt?Comment
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Re: 1100881 42 Amp Alternator
The "extra" 881 laying on my garage shelf is dated 9 B 12, it's off a 390 hp auto car. Has original pulley, etc., and is unrestored.Comment
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