how much power can the stock c5z differential hold on mt et streets

 

According to your profile, it states that your running 18" BFG drag radials. If you havn't broke any thing w/ those stickies, I don't think you have any thing to worry about. Good luck.

 

It's a crapshoot. Some people have good luck with them for years and for others they break with the first high RPM clutch dump. I personally have had good luck for 3 years with my car. (409rwhp and a sticky McLeod dual disc clutch) I've been to the dragstrip probably 15 passes with no issues yet. (knock on wood)

 

???

18s don't hook. bfgs don't hook.

mt's HOOK.

the answer lies in your clutch release. good luck.

 

it would be more from rolls, i know its frowned upon here, but it happens, i just wanted to make sure i dont blow my diff from a first gear roll, looking at 295/45 17 hopefully the taller sidewall will help

 

I run that exact tire and have 685/715 rw on the stock trans and rear. I'm asking for it, but they're still together....!

 

Roll on?

Nothing to worry about unless you wheelhop like mad.

 

you serious clark? what do you launch at and what kinda 60ft's you pulling?

 

I am not launching on the juice and only leaving at 3 grand. As soon as I am ready, I will leave on the limiter and see what happens, lol. Last weekend in November is the big plan.

 

The diff is pretty strong, mine has handled alot of track abuse. The best I've done so far is some 1.5x 60'. I did mods for the known weak points with a hardened driver side shaft and diff brace from DTE. With only those upgrades to the rear, I've done many launches at >5K rpm including 2 step. As mentioned already, if you get wheel hop abort it immediately. With ET Street the chances are less you will get it, but still can happen from too much spin too fast.

The video in my sig is a 5K WOT launch with 2 step, and 9psi in the ET Streets. On the street they hook good but even roll on 3rd I still go sideways at 75mph.

 

It depends on a lot of factors. I ran clutches with organic facings, (a very heavy dual disc) and that gave me the slip I needed in the facing itself (i.e. the clutch couldn't hold on a hard launch) and it had some give in it. I had 50+ passes launching at 6600 and cut 1.42 60' times. it made for hard shifting at high rpm.

A switch to a very light twin disc disc unit with a more agressive sintered material broke the short shaft in the rear on the 1st pass. The clutch gave up after 3 passes.

The current clutch which is a sinlge disc with a carbon cermamic facing. The clutch holds very, very well. In fact it holds too well. We've broken 4 rears in the car. The last 3 broke on the first pass. The rear has a brace, and all the upgrade parts you can purchase, and the rear has a full brace. The last rear exploded on the line, and the biggest piece left fit in the palm of your hand.

The ET Streets have more give than a DR. Wheelhop will most definitely bust a rear.

When a launching a Corvette with decent power at the drag strip with an you need to either:
add wheelspin by adding air pressure.
Add clutch slip with a less agreesive clutch facing which means replacing the clutch a lot more often, and having enough surface area to hold the car.
slip the clutch out of the hole and not just dump the clutch from high RPM.

Basically yo have to have some "give" in the driveline. Its up to you to decide which one works best. You can see some videos of the car I race on Youtube look for videos by JRodZ06 you can see a lot of 1.4 60's on Et Streets.