Notices
Gears & Axles Driveshafts | Rearends | Differentials | Gears | 12 Bolt | 9 Inch | Dana

Power to stock rear end??

 
Old 08-02-2013, 02:45 PM
  #1  
On The Tree
Thread Starter
 
Join Date: Mar 2011
Location: Atlanta,GA
Posts: 106
Likes: 0
Received 0 Likes on 0 Posts
Default Power to stock rear end??

I have a 99 Firebird with the stock rear end in it and I am installing 3.73 gears. How much power can it handle till it gives out??
Thackdaddy43 is offline  
Old 08-02-2013, 03:14 PM
  #2  
12 Second Club
 
LILWS6's Avatar
 
Join Date: Feb 2006
Location: Waukesha,WI
Posts: 993
Likes: 0
Received 0 Likes on 0 Posts
Default

Theres not a power limit on the 10bolt it just has a time limit. Stock motor i blew my 10bolt up so its really not a matter of how much it can take just how long it will take it
LILWS6 is offline  
Old 08-02-2013, 07:17 PM
  #3  
TECH Senior Member
iTrader: (8)
 
Blackpanther99's Avatar
 
Join Date: Sep 2012
Location: Baytown, TX
Posts: 6,933
Likes: 0
Received 0 Likes on 0 Posts
Default

Agreed^ Its about luck in alot of times. Lol
Blackpanther99 is offline  
Old 08-02-2013, 08:43 PM
  #4  
TECH Junkie
iTrader: (4)
 
FirstYrLS1Z's Avatar
 
Join Date: Aug 2004
Location: Euclid,Ohio
Posts: 3,399
Likes: 0
Received 0 Likes on 0 Posts
Default

Autos can put a lot more power to the rear without destroying it because of the absence of the shock load a manual delivers.
FirstYrLS1Z is offline  
Old 08-03-2013, 12:12 AM
  #5  
TECH Resident
iTrader: (4)
 
Join Date: Apr 2003
Location: La Mirada, CA.
Posts: 827
Likes: 0
Received 0 Likes on 0 Posts
Default

and then there's the tire scenario with that POS factory 10-bolt.

If you have slicks on a 10 bolt, even with a factory motor, just with the slicks you can tear teeth in your differential even in your first hard launch.

that's why most hard core 1/4 runners replace the 10 bolt with an aftermarket axle
Carlos01SS is offline  
Old 08-05-2013, 09:24 PM
  #6  
On The Tree
Thread Starter
 
Join Date: Mar 2011
Location: Atlanta,GA
Posts: 106
Likes: 0
Received 0 Likes on 0 Posts
Default

So then it would be a good idea to upgrade the axles then??
Thackdaddy43 is offline  
Old 08-06-2013, 11:23 AM
  #7  
Teching In
iTrader: (5)
 
Join Date: May 2008
Location: Elkton, MD
Posts: 32
Likes: 0
Received 0 Likes on 0 Posts
Default

Most people say its a waste of time and money to do anything to the stock rear. 9 inch, S60 and 12 bolts are the most popular upgrades. It's not a matter of if it breaks, just when. I am currently saving up for a 9 inch myself.
dalejrfan88 is offline  
Old 08-06-2013, 05:11 PM
  #8  
Banned
iTrader: (18)
 
high n dry's Avatar
 
Join Date: Mar 2013
Posts: 431
Likes: 0
Received 1 Like on 1 Post
Default

stock ls1 power will break it... save the time n money for a S-60 like me!
high n dry is offline  
Old 08-06-2013, 06:04 PM
  #9  
On The Tree
Thread Starter
 
Join Date: Mar 2011
Location: Atlanta,GA
Posts: 106
Likes: 0
Received 0 Likes on 0 Posts
Default

OK!! Thank you to all that added their help and I think I will be getting a 12 bolt.
Thackdaddy43 is offline  
Old 08-06-2013, 06:12 PM
  #10  
TECH Senior Member
iTrader: (2)
 
HCI2000SS's Avatar
 
Join Date: Aug 2012
Location: Howell & Fenton MI
Posts: 11,158
Likes: 0
Received 0 Likes on 0 Posts
Default

It really depends on your on your luck, how you drive, etc... For example I have the factory 10 bolt with a Detroit Trutrak upgrade, and will probably be making around 550 rwhp in the next day or two here. Am I worried?? Not really because I know how I will drive it. Could it break?? Sure, but that's a justified risk that i'm willing to take at the moment lol
HCI2000SS is offline  
Old 08-06-2013, 10:20 PM
  #11  
12 Second Club
 
LILWS6's Avatar
 
Join Date: Feb 2006
Location: Waukesha,WI
Posts: 993
Likes: 0
Received 0 Likes on 0 Posts
Default

I popped a moser 12bolt in mine other than the normal 12 bolt whine shes fine and dandy and i beat her up pretty good
LILWS6 is offline  
Old 08-06-2013, 10:33 PM
  #12  
11 Second Club
iTrader: (9)
 
handyandy496's Avatar
 
Join Date: Jun 2013
Location: florida
Posts: 667
Likes: 0
Received 0 Likes on 0 Posts
Default if

if set up right 12 bolts don't wine or break....12 yrs in a 69 SS 496 chevelle and still going with a box full of time slips . M&H 10x27's too. paid 75 bucks for it in the 80's.
handyandy496 is offline  
Old 08-06-2013, 11:57 PM
  #13  
On The Tree
Thread Starter
 
Join Date: Mar 2011
Location: Atlanta,GA
Posts: 106
Likes: 0
Received 0 Likes on 0 Posts
Default

It's going to be a street/strip car and on the street do a little racing here and there
Thackdaddy43 is offline  
Old 08-08-2013, 09:13 AM
  #14  
TECH Regular
 
Join Date: Jan 2005
Location: Orlaanndoooo
Posts: 474
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by handyandy496 View Post
if set up right 12 bolts don't wine or break....12 yrs in a 69 SS 496 chevelle and still going with a box full of time slips . M&H 10x27's too. paid 75 bucks for it in the 80's.
True, in a car that doesn't have a torque arm twisting and stressing the housing right next to the pinion gear.

A good read: http://shop.brutespeed.com/Brute-Spe...nformation.htm
Awake455 is offline  
Old 08-12-2013, 07:33 PM
  #15  
11 Second Club
iTrader: (9)
 
handyandy496's Avatar
 
Join Date: Jun 2013
Location: florida
Posts: 667
Likes: 0
Received 0 Likes on 0 Posts
Default

nice commercial for the 9"'s funny what they don't say is the 9" offsett robs you of tq and hp. Just makes me glad I stayed all GM. @635 hp btw.

As far as the f-body setup vs 4 link....just find a good welder and get more rigidity from the outer ends of the axil tubes (9 or 12 " rears). Don't put all of the pressure on the pumpkin.
handyandy496 is offline  
Old 08-14-2013, 01:35 PM
  #16  
TECH Regular
 
Join Date: Jan 2005
Location: Orlaanndoooo
Posts: 474
Likes: 0
Received 0 Likes on 0 Posts
Default

Yes...commercial.

Or it's a vendor that was offering all options for the F-bodies, saw what was happening with the M6 cars, did some homework as to what was going on, and makes recommendations based on evidence.

Your 12 bolt in your F-body is an aftermarket, just as is every piece in these fabbed 9" rears and the S60s but if you feel better telling yourself it's a GM rear axle then yay candy.
Awake455 is offline  
Old 08-15-2013, 10:58 PM
  #17  
TECH Resident
 
Join Date: Oct 2005
Location: olympia, wash
Posts: 963
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by Thackdaddy43 View Post
OK!! Thank you to all that added their help and I think I will be getting a 12 bolt.
Whoa there gunslinger...
Lets slow down a bit.
Are you an auto trans car, or a manual?
If your a manual, then yes, you should upgrade.
If an auto, you are good down to low 1.5 short times.
Give us some more info..
dannyz is online now  
 


Thread Tools
Search this Thread
Quick Reply: Power to stock rear end??


About Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: