I REQUEST Advice
Thread Starter
Race Director
Joined: Sep 2005
Posts: 11,060
Likes: 290
From: Pasco WA
I REQUEST Advice
Today I found out what 600RWHP can do to a stock rear end. Actually, until I can get her up on stands, I don't know if it's the tranny or the diff. Assuming one or the other, and not liking to do things twice, should I buy a built complete unit, or just fix the broken part. RPM, DTE, others? Thanks for any advice, brothers.
Safety Car
Joined: Aug 2004
Posts: 4,734
Likes: 232
From: Youngstown Ohio
I'm running a stock trans and rearend myself with 540Rwhp. I'm not even waiting for the diff to go, next year when I swap out the clutch the rear is getting an upgrade also. You didn't say manual or auto? I vote for doing it right the first time and upgrading.
Darion
Darion
Thread Starter
Race Director
Joined: Sep 2005
Posts: 11,060
Likes: 290
From: Pasco WA
It's an '02 ZO6, so, aluminum parts trans, and weak halfshafts. I don't think they broke!
I'm fairly sure it's the diff. I'm getting the best diff made, and a brace, too. I probably will do a tranny at the same time.
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Joined: Aug 2004
Posts: 4,734
Likes: 232
From: Youngstown Ohio
Thats the way to jump in, both feet at the same time. 
I'm not doing anything with the manual trans, just haven't seen enough issues at my power level to justify it, hopefully others will chime in. The diff on the other hand will get swapped out and the brace is a good idea also.
Good luck,
Darion
I'm not doing anything with the manual trans, just haven't seen enough issues at my power level to justify it, hopefully others will chime in. The diff on the other hand will get swapped out and the brace is a good idea also.Good luck,
Darion
Safety Car
Joined: Nov 2000
Posts: 4,549
Likes: 30
From: Shenandoah Valley Virginia
What is your intended usage for the car ?? Drag, Street, Track ??? Each would require a different approach to insure longevity. RPM seems to be a forum favorite with constant quality ratings and great customer service. Street - recommend strengthening maybe a level 4, drag, full level 4 and brace, track - same thing with cooler. Fix it right for your application and don't mess with it again.
Melting Slicks
Joined: Jun 2005
Posts: 2,396
Likes: 52
From: Sicamous BC
Get to take it a part again Eh! 
At least no clutch right?
When mine was at Tom's I had him send the Diff to RPM, I did not want to do it your way & the complete drive line was out anyway. It went back in with a ECS Trans brace.
I was comfortable with what RPM has done & is doing, Tom has also had good success with RPM.
My .00 cents
At least no clutch right?When mine was at Tom's I had him send the Diff to RPM, I did not want to do it your way & the complete drive line was out anyway. It went back in with a ECS Trans brace.
I was comfortable with what RPM has done & is doing, Tom has also had good success with RPM.
My .00 cents
Thread Starter
Race Director
Joined: Sep 2005
Posts: 11,060
Likes: 290
From: Pasco WA
Get to take it a part again Eh! At least no clutch right?
When mine was at Tom's I had him send the Diff to RPM, I did not want to do it your way & the complete drive line was out anyway. It went back in with a ECS Trans brace.
I was comfortable with what RPM has done & is doing, Tom has also had good success with RPM.
My .00 cents
At least no clutch right?When mine was at Tom's I had him send the Diff to RPM, I did not want to do it your way & the complete drive line was out anyway. It went back in with a ECS Trans brace.
I was comfortable with what RPM has done & is doing, Tom has also had good success with RPM.
My .00 cents
I hate a smartass, that isn't me
Tom just tuned my car, I do all the mechanical work. It's a bonding experience, and since I have other cars to drive, it can be up on jackstands for quite a time. It's only got 19k miles, and I've had it 9 yrs. I'm pretty sure it's the diff, but I've got no idea if the tranny was involved. Every time I replace a part it gets upgraded. I was thinking about a C6Z DTE diff? And a Pfadt brace.OH yeah, no clutch this time. When I brought the car to a stop, I could put it in 1,2,3, and let out the clutch, and the car would move, but to the accompaniment of expensive crunching, popping sounds, and bucking.
Last edited by zeevette; Aug 4, 2011 at 11:20 AM.
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Tech Contributor
Joined: Dec 1999
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From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Here are a couple of post to help you get to know your C5 Differential.
I did all the C6 ZO6 hard parts for the rear. I didnt do the pinion up-grade. We will see how it handles 450 RWHP
-C5, ragtopws6 , Upgrading your C5 rear with C6 Z06 guts, : http://forums.corvetteforum.com/c5-g...-z06-guts.html
-C5, Its_Go_Time, Output Shaft Install - Left and Right: http://forums.corvetteforum.com/c5-t...post1573407966
I had Rockland Standard Gear convert my NM12 to a T60/60 Tranzilla Box:
http://www.rsgear.com/products/trans...tranzilla.aspx
Bill
I did all the C6 ZO6 hard parts for the rear. I didnt do the pinion up-grade. We will see how it handles 450 RWHP
-C5, ragtopws6 , Upgrading your C5 rear with C6 Z06 guts, : http://forums.corvetteforum.com/c5-g...-z06-guts.html
-C5, Its_Go_Time, Output Shaft Install - Left and Right: http://forums.corvetteforum.com/c5-t...post1573407966
I had Rockland Standard Gear convert my NM12 to a T60/60 Tranzilla Box:
http://www.rsgear.com/products/trans...tranzilla.aspx
Bill
Thread Starter
Race Director
Joined: Sep 2005
Posts: 11,060
Likes: 290
From: Pasco WA
Great links, Bill, Thank you. As long as I have a car with this much power, I think it behooves me to upgrade the trans, if, in this case, it was just the diff. Early m12 have alot of room for improvement, eh?
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Thread Starter
Race Director
Joined: Sep 2005
Posts: 11,060
Likes: 290
From: Pasco WA
You will be getting a call. I'm pretty sure it is indeed the transmission, at least, the major breakage. The fluid that covered the rear of the car, and dripped was clear, and light weight. I had RP in the trans, and I found out that the purple goes away! If diff., wouldn't it be heavier, and darker fluid? I'm still too ill to get under the car and jack it up, but the mystery is killing me.