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- - Stock amps of an 87 alternator? (https://67-72chevytrucks.com/vboard/showthread.php?t=61166)

C&C Chevy

07-18-2003 08:39 PM

Stock amps of an 87 alternator?

Whats the stock amp rating of an 87 alternator? Mine doesn't have a sticker or anything on it. Probly been replaced. How can I measure the amperage??

C&C Chevy

07-18-2003 11:30 PM

Anyone have a guess? I'm itchin' to put some electric fans in but I need to know the least amount of amps I can have.

CT-Truckster

07-19-2003 11:33 AM

just a guess i would say 60 something, seems like all the stock alternators i ever put on our trucks was i think 64 or something like that, but its just a guess.

78SilveradoSWB

07-19-2003 12:46 PM

If it helps, my 78 C-10 has the optional hi-output alternator which is rated at 55 amps. Just ordered a 180 amp. one to take care of future needs and upcoming dual electric fans.

C&C Chevy

07-19-2003 01:20 PM

O'reilly's has a reman. AC Delco 100 amp. for $44 plus core. Does that fall under the "get what you pay for" slogan?

78SilveradoSWB

07-19-2003 02:29 PM

Depends on the warranty. The one I am buying has a 2 year warranty. $44 is not a bad price.

bigd65

07-20-2003 08:53 PM

i got mine for i believe an 88 and its a 150 amp. serpentine. most of them are of the same amperage. i think you will need at least 100 amp to run electric fans and AC. BTW mine is from AUTOZONE and cost 150.00 bucks with a lifetime warranty.

Grim Reaper

07-23-2003 02:30 PM

Quote:

Originally posted by bigd65
i got mine for i believe an 88 and its a 150 amp. serpentine. most of them are of the same amperage. i think you will need at least 100 amp to run electric fans and AC. BTW mine is from AUTOZONE and cost 150.00 bucks with a lifetime warranty.

88 with factory tow package would have been 105. Just had mine rebuilt last week.

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