2 Series POSI---26 spline

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03-04-2019, 06:46 PM

tater

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Car: Dad's 87 Bird (Org Owner)

Engine: Vortec 350 Crate Motor

Transmission: TH350

Axle/Gears: 3.42 Posi

2 Series POSI---26 spline

WTB a 2 series posi for 26 spline axles.

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04-01-2019, 09:37 PM

tater

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Car: Dad's 87 Bird (Org Owner)

Engine: Vortec 350 Crate Motor

Transmission: TH350

Axle/Gears: 3.42 Posi

Re: 2 Series POSI---26 spline

Anybody have one?

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04-01-2019, 10:20 PM

beths91camaro

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Car: 87 Iroc vert, t-top

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Re: 2 Series POSI---26 spline

What years were they commonly on? I have 2 posi rears right now I can pull apart.

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04-08-2019, 06:28 PM

tater

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Car: Dad's 87 Bird (Org Owner)

Engine: Vortec 350 Crate Motor

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Axle/Gears: 3.42 Posi

Re: 2 Series POSI---26 spline

I believe the 26 splines were up to the late 80's. Went to 28 spline after that.

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04-08-2019, 06:31 PM

beths91camaro

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Re: 2 Series POSI---26 spline

10 bolt?
Let me see what I have.

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04-08-2019, 10:22 PM

dmccain

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Car: 89 Firebird

Engine: 355 TBI

Transmission: 700R4

Axle/Gears: 10 Bolt.Posi-3.73s

Re: 2 Series POSI---26 spline

89 was a mixed bag of 26 and 28 spline 10 bolts, that's the year it changed from 26 spline to 28 spline posi.My 89 came with 26. Other folks claim their 89 had 28 spline. You never know what one of these cars have til you check it though because that was such a common thing to break . Within 6months one car I had went from a Gov-lok to auburn to eventually a 9bolt.

Last edited by dmccain; 04-08-2019 at 10:42 PM.