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Reload this Page Beefing up a (broken) 9 Bolt rear end. HEELP!

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Old 07-09-2009, 09:41 PM   #1
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Join Date: Nov 2007
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Beefing up a (broken) 9 Bolt rear end. HEELP!
Hi guys, I’m not trying to make it easy on myself, I just don’t know anything about rear ends so I need lots of help.

PROBLEM: Broken 9 Bolt 2.77 rear end (something broke inside, I don't have means of actually checking what broke but wheels are stuck going forward, do go back).

WHAT I NEED: To rebuild it with strongest parts possible to handle some serious power (hopefully it would handle at least 400 hp if such rebuilt is possible).

I read this artice: Beefing Up the 7.625 10 Bolt here: http://www.thirdgen.org/beefinguprear

Essentially I would like to do the same thing to my 9 Bolt, rebuilt it very strong but I need the list of parts for the 9 bolt just like kwikgta listed for his 10 bolt, part numbers, any additional parts I would need (I know I will need new gears cause I want strong ones and either 3.42 or 3.73 not sure yet). And of course where to buy all this.

Thank you all in advance. Please keep in my I know nothing about rear ends so please list all parts I need even if you don’t know part numbers. I would like to use my current brakes (got discs in the rear).

I am stressing so much that I need a complete list of parts because my plan is to buy all parts and then tow my car to a mechanic, give him parts and not have a headache of him telling me that I'm missing something. I also need a good posi, so please include info on a good strong one too.

Again, I know I'm asking for much but I will greatly appreciate any help.
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Old 07-09-2009, 10:04 PM   #2
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Join Date: Jul 2007
Location: MA
Posts: 1,085
Car: '87 IROC/'68 SS
Engine: 5.7L/350
Transmission: 700R4/Muncie 4-spd
Axle/Gears: 3.27 9 bolt / 3.31 12 bolt

Classifieds Rating: (1)
Re: Beefing up a (broken) 9 Bolt rear end. HEELP!
Parts availability for the 9 bolt is a problem. You're not going to find all the aftermarket stuff you see for the 10 bolt. This link will help:

http://www.thirdgen.org/techboard/fa...now-about.html (Everything I know about 9-Bolt Rearends!)

I'd guess your spider gears are toast.
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Old 07-09-2009, 10:15 PM   #3
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Join Date: Nov 2006
Location: Chico, Ca
Posts: 2,310
Car: 1988 Formula 350
Engine: 5.7
Transmission: 700r4
Axle/Gears: 9 Bolt 3.27

Classifieds Rating: (1)
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Re: Beefing up a (broken) 9 Bolt rear end. HEELP!
I have a set of 3.45 gears for sale, as well as a spider gear set. $110 obo Shipped.
__________________
88 Firebird Formula 350- 85,XXX miles *G92* *Ws6*
 Superram- Trickflow Aluminum Heads- Powermax 2032 Cam- Crane Roller Rockers- BBK 52mm TB- 24lb Inj- SFC-
High Flow Cat- Wonderbar- BW 9 Bolt 3.27- FPR- Edelbrock TES Header & Y Pipe- 2900RPM Stall- STB- Nitto Drag Radials
13.7@101 2.2 60ft time... traction issues.

What needs to be installed:
Poly Bushings - Door Pins- 3.45 gears

For Sale:
Sub box for 2 12's $75.
Tall Polished Centerbolt Valve Covers $85.
9 Bolt Carrier Parts
PM me if interested.



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Old 07-09-2009, 11:12 PM   #4
Senior Member
 
Join Date: Jul 2007
Location: MA
Posts: 1,085
Car: '87 IROC/'68 SS
Engine: 5.7L/350
Transmission: 700R4/Muncie 4-spd
Axle/Gears: 3.27 9 bolt / 3.31 12 bolt

Classifieds Rating: (1)
Re: Beefing up a (broken) 9 Bolt rear end. HEELP!
Be aware that 3.xx gears won't fit on your 2 series carrier.
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Old 07-09-2009, 11:32 PM   #5
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Join Date: Nov 2006
Location: Chico, Ca
Posts: 2,310
Car: 1988 Formula 350
Engine: 5.7
Transmission: 700r4
Axle/Gears: 9 Bolt 3.27

Classifieds Rating: (1)
Send a message via AIM to Bullydawg
Re: Beefing up a (broken) 9 Bolt rear end. HEELP!
That is correct. You will need a 3 series carrier, which I have, but the posi is worn. I can include all the internal parts.
__________________
88 Firebird Formula 350- 85,XXX miles *G92* *Ws6*
 Superram- Trickflow Aluminum Heads- Powermax 2032 Cam- Crane Roller Rockers- BBK 52mm TB- 24lb Inj- SFC-
High Flow Cat- Wonderbar- BW 9 Bolt 3.27- FPR- Edelbrock TES Header & Y Pipe- 2900RPM Stall- STB- Nitto Drag Radials
13.7@101 2.2 60ft time... traction issues.

What needs to be installed:
Poly Bushings - Door Pins- 3.45 gears

For Sale:
Sub box for 2 12's $75.
Tall Polished Centerbolt Valve Covers $85.
9 Bolt Carrier Parts
PM me if interested.



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345, 700r4, 9bolt, bolt, bw, checking, common, end, ends, g92, problems, rear, rearends, rebuild, stall
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