2005 Differential
Thread Starter
Advanced
Joined: Jun 2010
Posts: 81
Likes: 0
From: Tempe AZ
2005 Differential
Gents,
So i have heard that the 05 diff is garbage, which pains me greatly. I have a 416ci LS3 waiting to go in my 05 z51. Obviously i would tear the diff apart with that motor (made 515 rwhp, and 490 rwtq in my GTO).
Now ive looked into updating to an 06 diff. and while i feel this is the best option, it is amazingly expensive. by the time you get an 06 core, and have it built by DTE, or RPM, or whomever its 3-5k + the new housing on the 05 trans.
So my question is this, any of you put any real power through an 05 diff? is the DTE 05 diff build worth it?
Thanks guys!
So i have heard that the 05 diff is garbage, which pains me greatly. I have a 416ci LS3 waiting to go in my 05 z51. Obviously i would tear the diff apart with that motor (made 515 rwhp, and 490 rwtq in my GTO).
Now ive looked into updating to an 06 diff. and while i feel this is the best option, it is amazingly expensive. by the time you get an 06 core, and have it built by DTE, or RPM, or whomever its 3-5k + the new housing on the 05 trans.
So my question is this, any of you put any real power through an 05 diff? is the DTE 05 diff build worth it?
Thanks guys!
Instructor
Joined: Nov 2009
Posts: 145
Likes: 0
From: Peachland British Columbia
re 05 rear diff
I was looking at the same thing with my 05, putting the e-force in.
With all my research on this, the weak link is the output shafts there is a knurl on shaft that transitions the different splines . I was just going to upgrade to stronger output shafts. And maybe fab up a similar girdle to DTE . We are in the same boat keep me posted .
With all my research on this, the weak link is the output shafts there is a knurl on shaft that transitions the different splines . I was just going to upgrade to stronger output shafts. And maybe fab up a similar girdle to DTE . We are in the same boat keep me posted .
Thread Starter
Advanced
Joined: Jun 2010
Posts: 81
Likes: 0
From: Tempe AZ
I was looking at the same thing with my 05, putting the e-force in.
With all my research on this, the weak link is the output shafts there is a knurl on shaft that transitions the different splines . I was just going to upgrade to stronger output shafts. And maybe fab up a similar girdle to DTE . We are in the same boat keep me posted .
With all my research on this, the weak link is the output shafts there is a knurl on shaft that transitions the different splines . I was just going to upgrade to stronger output shafts. And maybe fab up a similar girdle to DTE . We are in the same boat keep me posted .
I wish there was a simple answer for us though
Burning Brakes
Joined: Oct 2005
Posts: 1,007
Likes: 0
From: Rockwall TX
I was 762rwhp on my last set-up.with a 4L65E. stock 05 diff and shafts. 80k miles. best 60ft was 1.54. i always leave on motor. best 330ft. time was 4.00 on a 300 shot of juice. even the best diffs will brake if your trying to get your time from the 60ft. also i have the 2.73 gear.less shock.
Thread Starter
Advanced
Joined: Jun 2010
Posts: 81
Likes: 0
From: Tempe AZ
I was 762rwhp on my last set-up.with a 4L65E. stock 05 diff and shafts. 80k miles. best 60ft was 1.54. i always leave on motor. best 330ft. time was 4.00 on a 300 shot of juice. even the best diffs will brake if your trying to get your time from the 60ft. also i have the 2.73 gear.less shock.
Melting Slicks
Joined: Nov 2005
Posts: 2,345
Likes: 2
From: Houston 06 C6 Ysi SC 402 fgd TX
Gents,
So i have heard that the 05 diff is garbage, which pains me greatly. I have a 416ci LS3 waiting to go in my 05 z51. Obviously i would tear the diff apart with that motor (made 515 rwhp, and 490 rwtq in my GTO).
Now ive looked into updating to an 06 diff. and while i feel this is the best option, it is amazingly expensive. by the time you get an 06 core, and have it built by DTE, or RPM, or whomever its 3-5k + the new housing on the 05 trans.
So my question is this, any of you put any real power through an 05 diff? is the DTE 05 diff build worth it?
Thanks guys!
So i have heard that the 05 diff is garbage, which pains me greatly. I have a 416ci LS3 waiting to go in my 05 z51. Obviously i would tear the diff apart with that motor (made 515 rwhp, and 490 rwtq in my GTO).
Now ive looked into updating to an 06 diff. and while i feel this is the best option, it is amazingly expensive. by the time you get an 06 core, and have it built by DTE, or RPM, or whomever its 3-5k + the new housing on the 05 trans.
So my question is this, any of you put any real power through an 05 diff? is the DTE 05 diff build worth it?
Thanks guys!
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Heel & Toe
Joined: Jun 2006
Posts: 19
Likes: 1
Thread Starter
Advanced
Joined: Jun 2010
Posts: 81
Likes: 0
From: Tempe AZ
i do want to drag it on occasion, mostly it will be highway stuff, and just regular driving.. but i dont want to risk it
GAH why me? haha i love having a 6 speed.. dont think i could give it up
Race Director
Joined: Mar 2005
Posts: 11,549
Likes: 27
From: Southampton NJ
Race Director
Joined: Jan 2006
Posts: 18,396
Likes: 169
Good ol' GM. What a bunch of dumbazzes. Add another 50 hp over the C5, then save $5 in aluminum by designing a thin case differential that is a time bomb waiting to explode. They discovered this small defect in the eleventh hour before production and initiated a software fix. Remember torque management? The truth is this is how they intended to fix the 2005's in order to avoid thousands of warranty claims. What a bunch of bill$h!t. I wish some enterprising lawyer would initiate a class action against GM. Owners of 2005 mn6's can't flex the car's performance for fear of grenading the differential, and on some occasions the tranny with it. That's about an $8k repair at Mr. Goodwitch. All the DTE brace does is protect the tranny from being pulled out in a catastrophic failure. It does nothing to reinforce the case. At one point, I understood they were developing a bullet proof case for the 2005's, but, I guess we 2005 owners have become stepchildren of the differential, and no one cares about us anymore. I've never enjoyed the practice of a drag strip start or a burn out for fear of a differential case failure. 
GM sux
GM sux
Instructor
Joined: Jan 2005
Posts: 131
Likes: 0
From: Tyler TX
Why don't you get the DTE brace to protect the trans and then if you blow the differential you'll have the same cost of replacing it then as doing it now. And if you don't blow it, much less expensive.
Also, with street tires if you don't get into it with wheel hop you'll probably be ok anyway.
Also, with street tires if you don't get into it with wheel hop you'll probably be ok anyway.
Race Director
Joined: Mar 2005
Posts: 11,549
Likes: 27
From: Southampton NJ
Good ol' GM. What a bunch of dumbazzes. Add another 50 hp over the C5, then save $5 in aluminum by designing a thin case differential that is a time bomb waiting to explode. They discovered this small defect in the eleventh hour before production and initiated a software fix. Remember torque management? The truth is this is how they intended to fix the 2005's in order to avoid thousands of warranty claims. What a bunch of bill$h!t. I wish some enterprising lawyer would initiate a class action against GM. Owners of 2005 mn6's can't flex the car's performance for fear of grenading the differential, and on some occasions the tranny with it. That's about an $8k repair at Mr. Goodwitch. All the DTE brace does is protect the tranny from being pulled out in a catastrophic failure. It does nothing to reinforce the case. At one point, I understood they were developing a bullet proof case for the 2005's, but, I guess we 2005 owners have become stepchildren of the differential, and no one cares about us anymore. I've never enjoyed the practice of a drag strip start or a burn out for fear of a differential case failure.
GM sux
GM sux
