First Generation Firebird-L Mailing List ......................................................................... The carrier needs to match the Pontiac axle housing. The Firebirds came with the "8.2 BOP" axle. BOP stands for Buick/Olds/Pontiac. This axle housing differes from the corporte "GM" axle. BOP is different than the GM 8.2 and it takes a different carrier. The carriers come in three versions, called series 1, 2 or 3. The mounting face of the carrier for the ring gear suits the ratios Sheen listed. In other words, the carrier will be slightly different depending on the series. This accomodates different ring gear thicknesses. If you find a used 2.93, 3.08 or 3.23 ring and pinion (I don't think there are any aftermarket sets lower than 3.55) you would also need a series 2 carrier for the BOP 8.2 axle.
Unless there are new parts available that weren't available three years ago when I looked, your choice would be to find used parts or to buy a 3.55 gear set (or higher) and a series 3 posi. Back then, there were no aftermarket posi carriers for series 2 ring/pinions. If you go shopping for a posi and/or gears, be watchful for the difference between BOP 8.2 and GM 8.2. I don't think the parts interchange. Larry --- On Sun, 6/21/09, Jim <[email protected]> wrote: From: Jim <[email protected]> Subject: Re: [FGF] Rear End To: "First Generation Firebird-L" <[email protected]> Date: Sunday, June 21, 2009, 3:51 PM First Generation Firebird-L Mailing List ......................................................................... So it's not the "outside" part of the axle that needs to be "correct" but the carrier on the inside? And any of them will fit inside the "outside" I already have for the 2.78 ? ----- Original Message ---- > From: Larry *.* <[email protected]> > To: First Generation Firebird-L <[email protected]> > Sent: Sunday, June 21, 2009 12:46:17 PM > Subject: Re: [FGF] Rear End > > First Generation Firebird-L Mailing List > ......................................................................... > You need the correct carrier, series 1, 2 or 3 per Sheen's list. The carrier > accepts only the range of ratios listed. The next problem is a limited > selection of aftermarket gear sets. > > > ------------------------------------------------------------------------ Submissions to Firebird-L: <[email protected]> Unsubscribe from Firebird-L: <[email protected]> Help: <http://FirstGenFirebird.org/firebird/Firebird-L.html> Classifieds: <http://FirstGenFirebird.org/ubb/> Owner Pictures: <http://FirstGenFirebird.org/show/> ------------------------------------------------------------------------ Submissions to Firebird-L: <[email protected]> Unsubscribe from Firebird-L: <[email protected]> Help: <http://FirstGenFirebird.org/firebird/Firebird-L.html> Classifieds: <http://FirstGenFirebird.org/ubb/> Owner Pictures: <http://FirstGenFirebird.org/show/>
