So what's the best?
Thread Starter
Registered User
Joined: Dec 2005
Posts: 197
From: Knoxville, TN
So what's the best?
I will be swapping out my 3rd 10 bolt for a better rearend finally. Hoping to hit 11's on spray next spring. So I was just wondering what is the best aftermarket rearend? 12 bolt, 9", or Dana 60? And who makes the best? Thanks!
Last edited by FivePoint7z28; Sep 24, 2007 at 01:03 PM.
Administrator
Joined: Nov 1998
Posts: 71,115
From: Hell was full so they sent me to NJ
What year car? What HP level? The 12-bolt is good for 700-800HP. Is it a manual or auto, and how often do you go to the track? I find the people with M6's who make hundreds of passes a season with huge clutch dumps are not happy with the 12-bolt. I prefer the Strange over the Moser.
Above 700-800HP, choice of the Dana 60 or 9-inch will depend on what you need and how you use your car. The Dana has a larger ring gear and thicker pinion shaft than the 9-inch, at least a 9-inch with a basic configuration. The Dana is available with 3-channel and 4-channel ABS/TCS, and a heavy duty limted slip. The 9-inch is not available with ABS/TCS, and for high HP applications does not offer a limted slip, just a locker or a spool. Depends on whether the car is street driven at all, and how much. The Dana and the 9-inch can incur a weight penalty, and 9-inch has weird geometry that drops the pinion centerline and offsets it to one side. The Dana will show less HP loss than the 12-bolt, and the 9-inch will show higher HP loss.
Without the details of your car, its hard to make a suggestion. Why not add a "signature" with basic info?
Above 700-800HP, choice of the Dana 60 or 9-inch will depend on what you need and how you use your car. The Dana has a larger ring gear and thicker pinion shaft than the 9-inch, at least a 9-inch with a basic configuration. The Dana is available with 3-channel and 4-channel ABS/TCS, and a heavy duty limted slip. The 9-inch is not available with ABS/TCS, and for high HP applications does not offer a limted slip, just a locker or a spool. Depends on whether the car is street driven at all, and how much. The Dana and the 9-inch can incur a weight penalty, and 9-inch has weird geometry that drops the pinion centerline and offsets it to one side. The Dana will show less HP loss than the 12-bolt, and the 9-inch will show higher HP loss.
Without the details of your car, its hard to make a suggestion. Why not add a "signature" with basic info?
Banned
Joined: Oct 2006
Posts: 4,970
From: Goochland, Va.
I am a 9" person all the way.....but if I had a street car I would not want it.
12 bolt is your best bet until you get to that hi h.p. level. Get the upgraded posi.
I like a 9" b/c everyone that races has 9" parts and pro gears etc. so if it breaks you can get it together by the next day.....I spent alot of money in my rear and have never broke anything
12 bolt is your best bet until you get to that hi h.p. level. Get the upgraded posi.
I like a 9" b/c everyone that races has 9" parts and pro gears etc. so if it breaks you can get it together by the next day.....I spent alot of money in my rear and have never broke anything
Thread Starter
Registered User
Joined: Dec 2005
Posts: 197
From: Knoxville, TN
Added Signature 
. I try to go to the track at least 4-5 times a year, which here in Michigan is only about 5 months lol. And I do drive the car quite a bit, maybe 2000 miles in those 5 months or so. I really dont see myself going into that 700-800hp range anytime soon and the car is an auto so I should be fine with the 12 bolt it looks like. Now my next questions are what gear to go with because I see that with a 12 bolt you can get a 3.90 gear? Any opinions on that? Should I go with 30 or 33 spline axles? And would the Eaton Posi or the TrueTrac be better? Limited slip? Thanks for all your help so far!
. I try to go to the track at least 4-5 times a year, which here in Michigan is only about 5 months lol. And I do drive the car quite a bit, maybe 2000 miles in those 5 months or so. I really dont see myself going into that 700-800hp range anytime soon and the car is an auto so I should be fine with the 12 bolt it looks like. Now my next questions are what gear to go with because I see that with a 12 bolt you can get a 3.90 gear? Any opinions on that? Should I go with 30 or 33 spline axles? And would the Eaton Posi or the TrueTrac be better? Limited slip? Thanks for all your help so far!
Administrator
Joined: Nov 1998
Posts: 71,115
From: Hell was full so they sent me to NJ
The Strange comes standard with 33-spline axles, and a 9-disk Eaton posi. They offer a "super strength" posi, which is a 14-disk (or 15... can't remember) Eaton.
The biggest problem I found with the Strange is the ABS sensor. It doesn't use the stock sensor. Strange supplies their own if you order the ABS option (see reluctor machined into the HD Eaton carrier, not bolted on). The sensor is adjustable, which can be difficult to get right, and seems to have a short life expectancy.
The biggest problem I found with the Strange is the ABS sensor. It doesn't use the stock sensor. Strange supplies their own if you order the ABS option (see reluctor machined into the HD Eaton carrier, not bolted on). The sensor is adjustable, which can be difficult to get right, and seems to have a short life expectancy.