Rear end failed at the launch today at the track...

[Intervention]

I was on my 4th pass, just getting used to the sticker(prepped) track. My track usually sucks, but they took good care of it today.

First launches bogged pretty bad, so I upped the launch RPM to about 4300-4500 on the 2nd to last launch. Ran a crappy 1.86' with bogging and ran a 12.08 @ 117.5

So got up to the line again, tried 4700. Right at the launch, I heard a very loud bang, and thats all she wrote. Rear end failed.

Had to tow it home. I'm not really sure what broke, its odd. There is very little noise in the rear end when the driveshaft is rotating. Its strange, I expected much more noise/chattering if there are metal chunks all in there.

The new question is, whats next for a new diff. I'm not sure if I want a spool, as the car is a DD and needs to be good in corners...

 

[chad05gt]

Tru trac and axels...

 

[Intervention]

Tru trac and axels...

I was thinking a TruTrac would be the way to go...

 

[Bullitt3478]

Steve Poe had a full rear end with electronic locker in the for sale ads.I dont know if its still available.Had 3.90 gears in it.

 

[GrnBullitt08]

Detroit Locker w/ strange or moser axles

 

[Bullitt3478]

http://www.s197forum.com/forum/showthread.php?t=45701 heres the link to Steves.its 4.30 gears.

 

[don_w]

The new question is, whats next for a new diff. I'm not sure if I want a spool, as the car is a DD and needs to be good in corners...

A spool is a bad choice for a daily driver... especially on the corners. It excels on the drag strip, but not anywhere else.

At your power level, I'd say the TrueTrac will be a good choice. A locker would be good too, but it's a couple hundred bucks more.

 

[chad05gt]

My tru trac has been on for 20K miles, 1000 mile road trips, alotta track, the thing just works.

 

[don_w]

My tru trac has been on for 20K miles, 1000 mile road trips, alotta track, the thing just works.

Mine was awesome for over 4 years, as well. But apparently, I reached it's power limit...

 

[Intervention]

A spool is a bad choice for a daily driver... especially on the corners. It excels on the drag strip, but not anywhere else.

At your power level, I'd say the TrueTrac will be a good choice. A locker would be good too, but it's a couple hundred bucks more.

So lockers are stronger than the trutrac, but cost more. I assume the Trutrac drives a bit nicer on the street...


Now how about the Eaton Posi LSD diff?