I got a passenger side alternator bracket set and I need and alternator. What year car do I need to tell them when I go to the parts store? Im assuming I should also say the car is non a/c. This is an Olds 350.

 

what year is the car?
what type of alternator did it have?
external regulator on the firewall?


bill

 

I have no idea what year engine the brackets came from. The car is an 86. I bought these to use on my 77 Olds because I am not running a/c.

I am pretty sure the one piece that bolts directly on the head is cast iron if that helps. I dont know how much those alternators changed on the outside so I was hoping I would be able to get one with an internal regulator.

If you need me to post pics of the brackets to help out with identifying them let me know.

 

the '86 car answered the question, you're looking for a '86 alternator. your alternator is a 12si type, internally regulated. without a/c or rear window defogger, you could use a 66 amp unit. better would be a 78 or 85 amp unit. you may need to "re-clock" any other alternator than a non-a/c/non-rear window defogger unit, but that is no big deal. "re-clocking" means you remove the four thru bolts and rotate the back half of the alternator to get the connectors in the right position. you do not disassemble the alternator-just rotate the back half. also, with a higher output alternator, you would want to upgrade the output terminal wire to a larger diameter.
the physical dimensions did not change that much through the years and the brackets would allow the different types without modification.


bill

 

Nope, read the original post again. He has a PASSENGER side bracket. There is no passenger side bracket for an 86. This is an earlier bracket for a 10SI alternator.

 

So I am assuming I need the 10si alt. Should I just tell the parts guys that I have a 75ish Cutlass with a 350 w/o a/c? Would the alt for an a/c car have the same mounting points as w/o a/c so I can get the higher amp. model?

 

Still says the same as it did, when I first read it.

And '86 is still the correct answer.

YES HE DOES.

His '86 has one.

And he needs an alternator that will fit in that bracket.

Which is the same, dimensionally, as the 10dn and the 12si, and all three will physically interchange. Since the difference is in the wiring requirements, he can use either the 10si or the 12si with his existing layout.

'86 is still the correct answer.

Just tell them you have an '86 with a 307 and A/C.

Norm

 

I have one for the car, I will try that. Less money for me to spend.

 

you will probably need to re-clock it if it was from an a/c application. you may also need to address an issue regarding the wiring being too short to reach the other side of the motor. an '86 307 w/ ac should give you an 85 amp alternator, ffr.


bill

 

I'm so confused............he has an 86 but they didn't come with no AC so no pass side alt. OK so it's off a different year. Did Olds have different clockings for different years? I know Chebbys are different.

Nick

 

I found the old one I had for the 307 and it bolted right up. I did not see any need to reclock the alt, the wiring was all accesable and not hitting anything.

I did have a question about what is used to tighten down the alternator and the bracket on the part that allows for the adjustment. On the original setup it used a something to stop the bolt from moving, I did not see any way of this working on the p/s setup. Did it just use a nut and bolt to hold it in place? It looks like it will work but I am not positive it will keep the belt tension tight with out anything keeping it from moving.

P.S. Sorry about the bad descriptions, I am not real familiar with the technical terms.

 

Pictures, if you can.