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#1
10-11-2012, 08:31 AM
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80 amp alternator idler bracket
I need the idler pulley and bracket for the 80 amp alternator for a 1974 Trans Am.
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#2
10-12-2012, 05:22 PM
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I think I have one, will look tomorrow and let you know.
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#3
10-13-2012, 08:02 AM
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Do you know the part # or do you have an Illistration of which one you are looking for ? I have 2 different bracket's,both from a 74 T/A with an 80 amp Alt......
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#4
10-13-2012, 12:59 PM
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There is one on ebay now, but this guy is proud of it, kind of pricy.
Last edited by Doug Hopkins; 10-13-2012 at 01:21 PM. |
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#5
10-13-2012, 04:15 PM
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You might check with ('ol Pinion head) on this forum. He probably has what you need.
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#6
10-13-2012, 04:31 PM
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I finally found it, in the last place I looked, needs paint, pulley is straight and the bearing feels good. $75 + shipping.
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#7
10-13-2012, 04:34 PM
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I finally found it in the last place I looked, needs paint, bearing feels good and the pulley is straight. $75 + shipping.
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#8
10-13-2012, 06:56 PM
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if I needed another one, I'd snap this one up.
__________________
Buzzards gotta eat... same as worms. |
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#9
10-13-2012, 11:17 PM
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Sorry for the hijack, but what years used this bracket/pulley setup? Were all of the 2nd Gen years with the 80 amp alternator the same?
Thanks, Importsmasher
__________________
Scott Baggiore 66 GTO convertible 389/4 speed (parents bought new) 73 Firebird Formula 400/4 speed 74 GTO 455/4 speed 74 Grand Am |
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#10
10-15-2012, 09:32 AM
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From the information I found it was used on 1970-76 Pontiac powered cars that had rear defrost and ac.
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#11
10-15-2012, 11:05 AM
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The larger case 80 amp alt was 1st introduced in late '71 production. My experience is it was first avail on '71 Grand Prixs & '71 big cars and a very few late 71 V8 A-bodies. Yet to find one on a '71 Firebird, but it may have been possible. When a/c was ordered along with the grid type rear window defroster, one received the 80 amp alternator, otherwise the Pontiac received the common 10SI style 55amp "928" or the 37 amp "927 (non a/c).
The fixed mount front alt bracket was used along with the idler pulley set-up on '71-72 A-bodys, GrandPrixs, and on Firebirds (late '71?, def '72-76). This was due to engine packaging. On the 2nd Gen Birds, if the alternator was installed with the more common B series 80 amp front bracket, the alternator could easily be pulled up tight & and rubbed against the inner hood structure, thus the idler pulley which acted as a tensioner along with the fixed front alt mount. The idler pulley set-up was not used on '73+ A-bodys & GrandPrixs. On those vehicles, there was more hood clearance & the more common "B series" front bracket was used. I first started chasing 80 amp brackets & components over 20 years ago & have put several complete set-ups together for fellow HO & SD restorers. Today, have multiple tubs of bits & pieces. On my '72 T/A, when I bought it, the stock 80 amp front bracket had been cut & welded on to accept a smaller 10SI alt. It was a mess, & even though I was in boneyards nearly every day, it & took several years to find the correct replacement parts. Mid 70's Cadillac & Olds also used 80 amp alts & I've pulled a few 1015's & 1016's off such big cars.
__________________
Buzzards gotta eat... same as worms. |
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#12
10-17-2012, 04:01 PM
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Quote:
Thanks for the Pic's,but thats not what I have.Sorry !!!!!! |
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#13
10-20-2012, 11:02 AM
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Here is a pic of the bracket and pulley.
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