4th Gen gears in My 85 ?
4th Gen gears in My 85 ?
I asked on Camaroz28.com If anyone Had Takeoff OEM 3.42's they were willing to Sell, and I got a Reply To the Tune of
" i have 2 sets of 3.42 gears from 7.625" 10 bolts."
Will these Fit In My car ? its an 85 w/ 10 bolt ( obviously ) He is asking a very reasonable price So I would Like To jump on this If I can. Thank You In advance.
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60 Ranchero - Project ( Money Hole )
85 Sport Coupe LG4 - Daily Driver
Livin' the Stereotype
" i have 2 sets of 3.42 gears from 7.625" 10 bolts."
Will these Fit In My car ? its an 85 w/ 10 bolt ( obviously ) He is asking a very reasonable price So I would Like To jump on this If I can. Thank You In advance.
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60 Ranchero - Project ( Money Hole )
85 Sport Coupe LG4 - Daily Driver
Livin' the Stereotype
Joined: Jul 1999
Posts: 10,950
Likes: 26
From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
Yep, if you've got a 10-bolt, 4th gen gears will fit perfectly, if you have 3.23's now. If you have 3.08 or 2.73's, those OEM 3.42's wont fit. But I think you said in another post you have 3.23's. 
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1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.25 @ 107.18 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
-=ICON Motorsports=-

------------------
1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.25 @ 107.18 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
-=ICON Motorsports=-
Crap, Ive Got 3.08's !
Hmm, What are My options here then, Do I need to Find Another 10 Bolt with a Differnt carrier ?
Thnx For the Info btw Kevin
Let Me Know here guys
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60 Ranchero - Project ( Money Hole )
85 Sport Coupe LG4 - Daily Driver
Livin' the Stereotype
Hmm, What are My options here then, Do I need to Find Another 10 Bolt with a Differnt carrier ?
Thnx For the Info btw Kevin

Let Me Know here guys

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60 Ranchero - Project ( Money Hole )
85 Sport Coupe LG4 - Daily Driver
Livin' the Stereotype
Joined: Jul 1999
Posts: 10,950
Likes: 26
From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
Ok, you've got 3.08's then. You need a posi unit that is 26 spline, for a 3.23 or higher gears. Or you can get the SLP take-off posi, and a set of 28 spline axles from Moser, but thats probably more than you want to spend.
Okay You got me Really Confused Kevin 
cant I just get the SLP posi, and Some junyard 28 splines, and the 3.42s and Put it all Together ?
If Not, What is the missing Link ? Do I need a Carrier out of a Car with 3.23's Or higher ?
AS you can see, Im new at this
I swear that Every Time I think Im starting to Know Most stuff about my car, I stumble Into something That Makes me feel Like a Goddamn Newbie all over
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60 Ranchero - Project ( Money Hole )
85 Sport Coupe LG4 - Daily Driver
Livin' the Stereotype

cant I just get the SLP posi, and Some junyard 28 splines, and the 3.42s and Put it all Together ?
If Not, What is the missing Link ? Do I need a Carrier out of a Car with 3.23's Or higher ?
AS you can see, Im new at this

I swear that Every Time I think Im starting to Know Most stuff about my car, I stumble Into something That Makes me feel Like a Goddamn Newbie all over

------------------
60 Ranchero - Project ( Money Hole )
85 Sport Coupe LG4 - Daily Driver
Livin' the Stereotype
Joined: Jul 1999
Posts: 10,950
Likes: 26
From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
Yes you can get some junkyard 28 spline axles, but they only came in 90-92 thirdgens. You've got to be damn lucky to find a 90-92 thirdgen in a junkyard.
Thats why I recommended getting some aftermarket 28 spline axles. Or, you can get a 3-series posi unit for 26 spline axles, and use that with your 3.42 gears. Less confused now?
Thats why I recommended getting some aftermarket 28 spline axles. Or, you can get a 3-series posi unit for 26 spline axles, and use that with your 3.42 gears. Less confused now?
Yeah Kevin, Thanks 
So Basically, Your Saying I cant Drop the 3.42's Into My Open Differntial as It is Now.
But Then again, Why WOuld I want to?
The car cant hook up as it is...
What am I looking at paying For the 3 series posi For 26 splines ?
Guy at the Yard Told me 75 Each For the axles, I might have to Jmp On that.
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60 Ranchero - Project ( Money Hole )
85 Sport Coupe LG4 - Daily Driver
Livin' the Stereotype

So Basically, Your Saying I cant Drop the 3.42's Into My Open Differntial as It is Now.
But Then again, Why WOuld I want to?
The car cant hook up as it is...What am I looking at paying For the 3 series posi For 26 splines ?
Guy at the Yard Told me 75 Each For the axles, I might have to Jmp On that.
------------------
60 Ranchero - Project ( Money Hole )
85 Sport Coupe LG4 - Daily Driver
Livin' the Stereotype
Trending Topics
Joined: Jul 1999
Posts: 10,950
Likes: 26
From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
The auburn 3-series posi is $300 from Jegs. If you've got a lead on 28 spline axles from a thirdgen for $150 total, jump on it! The 28 spline axles are stronger, plus you'll have the torsen rear end.
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