9 bolt or 9inch?
09-26-2013, 11:17 AM
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Car: 86 Trans Am WS6
Transmission: 700R4
Axle/Gears: 9 bolt with 3.70's
9 bolt or 9inch?
I've been considering swapping a Moser 9 inch into my trans am but I've heard my 9 bolt is somewhat durable for what I'm planning. Is it a worthwhile swap or am I ok to build a boost fed 383 with a T-56 swap?
09-26-2013, 12:58 PM
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Car: 92 Firebird, 91 Trans Am
Engine: L31 with HSR, LB9
Transmission: 700R4, 700R4
Axle/Gears: '99 10 bolt 3.90, '01 10 bolt 3.42
Re: 9 bolt or 9inch?
The 9 bolt won't hold up to that kind of power on launches.
09-26-2013, 08:46 PM
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Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Re: 9 bolt or 9inch?
A 9 bolt is only mildly stronger than the 10 bolt. If you need a diff that can take a lot of abuse, you need to upgrade to a 9", 12 bolt or Dana 60.
09-26-2013, 09:36 PM
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Car: '89 Formula
Engine: LS2
Transmission: 4L65E
Axle/Gears: MW 3.42 12 Bolt
Re: 9 bolt or 9inch?
86TransAmWS6383 - First Post! Welcome
I'm in the same boat as my 9bolt is on borrowed time with the LS2. I don't strip or drag, but I'm looking for a diff I can abuse with side load (HPDE's). Strange S60 is cost effective but too big/too much weight. A fabbed 9" is great for everything but the wallet. I like the Wavetrac, but to have it in a 12 bolt requires 35 splines - or go back to the ultralight 9" with 31, 33, or 35 spline options.
No good options for you, 86TransAmWS6383. How do you use the car? Looking for clutch style posi? or torsen/gear type posi? Slicks or street rubber?
I'm in the same boat as my 9bolt is on borrowed time with the LS2. I don't strip or drag, but I'm looking for a diff I can abuse with side load (HPDE's). Strange S60 is cost effective but too big/too much weight. A fabbed 9" is great for everything but the wallet. I like the Wavetrac, but to have it in a 12 bolt requires 35 splines - or go back to the ultralight 9" with 31, 33, or 35 spline options.
No good options for you, 86TransAmWS6383. How do you use the car? Looking for clutch style posi? or torsen/gear type posi? Slicks or street rubber?
09-26-2013, 10:01 PM
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Car: 1988 Flame Red Trans am GTA
Engine: Forged 355 4 Bolt, FIRST TPI
Transmission: 700r4
Axle/Gears: ls1 torsen 3.42 gear
Re: 9 bolt or 9inch?
I blew up my stock 9 bolt in my gta with a bolt on 350 tpi.... this is my 3rd rear end and its on borrowed time.... get an aftermarket unit....
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09-27-2013, 06:57 AM
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Re: 9 bolt or 9inch?
86TransAmWS6383 - First Post! Welcome
I'm in the same boat as my 9bolt is on borrowed time with the LS2. I don't strip or drag, but I'm looking for a diff I can abuse with side load (HPDE's). Strange S60 is cost effective but too big/too much weight. A fabbed 9" is great for everything but the wallet. I like the Wavetrac, but to have it in a 12 bolt requires 35 splines - or go back to the ultralight 9" with 31, 33, or 35 spline options.
No good options for you, 86TransAmWS6383. How do you use the car? Looking for clutch style posi? or torsen/gear type posi? Slicks or street rubber?
I'm in the same boat as my 9bolt is on borrowed time with the LS2. I don't strip or drag, but I'm looking for a diff I can abuse with side load (HPDE's). Strange S60 is cost effective but too big/too much weight. A fabbed 9" is great for everything but the wallet. I like the Wavetrac, but to have it in a 12 bolt requires 35 splines - or go back to the ultralight 9" with 31, 33, or 35 spline options.
No good options for you, 86TransAmWS6383. How do you use the car? Looking for clutch style posi? or torsen/gear type posi? Slicks or street rubber?
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