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Old 03-13-2021, 11:33 AM
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importsmasher importsmasher is offline
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Default 66 GTO posi carrier

My 66 GTO came originally with a 3.55 saf-T-track rear. I blew it up in high school lol. I hung onto the original housing, and I'm wanting to rebuild it and get it back under the car. I want to get a new posi carrier (since my brother pilfered the internals from mine years ago). Is there a preferred vendor? Auburn? Eaton? Someone else? The car is all stock, so I just need something that will hold up to a stock street GTO. I just don't know who has the best quality for the price. Same question goes for the 3.55 gear set. Any help is appreciated.

Thanks,
Importsmasher

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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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Old 03-14-2021, 03:04 AM
Geoff Geoff is offline
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There is a complete diff for sale in Parts for Sale, doesn't say what ratio.

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Old 03-14-2021, 08:48 AM
gtospieg gtospieg is offline
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I've used Eaton and Yukon. No problems with either and both are rebuildable.

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Old 03-20-2021, 07:21 PM
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Mister Pontiac Mister Pontiac is offline
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PM sent

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Eric "Todd" Mitten

'74 Bonneville 4dr Sedan (455/TH400/2.93 open)
'72 LeMans GT (455/M-13/3.23 [8.5"] posi)
'71 GTO Hardtop (400/TH400/3.07 12 bolt posi)
‘71 GTO Convertible (455HO/TH400/3.23 posi)
'67 GTO Coupe (455/ST-10/2.93 posi)
'67 Tempest Wagon (428/TH400/2.56 posi)

Deuteronomy 8:3
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Old 03-27-2021, 04:12 PM
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importsmasher importsmasher is offline
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Thanks, guys. I'll plan on either Eaton or Yukon.

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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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