DevilsAddvocate

the 12 bolt is not a 9" its a 8.75 or something along those lines

anthony714

8.75,9 who cares,they both adequate for your application

85_305

-How long has your 10 bolt lasted w/ 300 horses running thru it? All I am worried about is it making it the rest of summer, until next winter when I worry about tranny/rear end.
-Could someone find me a stud-girdle for my 10 bolt?
-And how would I convert to posi?
-Do i HAVE to upgrade to 28 spline axles, or will I be ok w/ my 26? (I have an 85, btw..)

85_305

Oh ya, doug791, do you beat on your car? Like burnouts, donuts, etc? Just wondering if I'm going to have to baby my car till I get a new rearend..

doug791

im a little bit confused so someone else is going to have to chime in. I thought around 88 or 89 is when they switched over to the 10 bolts, so if yours is an 85 i thought it would be a 9 bolt?

If its a 10 bolt youre gonna have to baby it. The stock L98 makes 245 horse and 345 tq and i have full exhaust, some headwork, hyperjunk chip, so im thinking im close to 300 hp 400 tq, and torque is really whats gonna break your rear end. I drive my car like i stole it, but after one summer so like 3 months of that ive already got a pretty good whine coming out of the rear, and last summer i didnt drive it barely at all because i didnt have the funds to repair my 700r-4 which it seems ive also managed to do serious damage to .

Since you have the 305 and slightly less torque unless you peel out every time you leave a parking lot (like i do) it should hold for a while. It really all depends tho from some people you hear that certain parts will handle a hell of a lot, and other people say they blow them up at nothing.

If you do have a 10 bolt you should be able to drive it for i would think bare minimum 6-12 months if you dont completly drive the wheels off of it. If you have the 9 bolt i wouldnt worry about your rear cause your trans is gonna go first.

EDIT: i know you have another post about swapping out your t-5 for another trans. But if you leave that t-5 in since its not a World Class t-5 (88ish and up?) if you drive that trans hard at all its gonna go KABOOM

85_305

^So the 85's have a 9-bolt???
When you say "if you drive yoru car hard, your tranny will go kaboom", what do you classify as "driving hard"?

doug791

letting the clutch out at high rpms, powershifting definitly will.

Ive heard of people who make 500 hp babying their t-5's and them holding, but those are WC t-5's and a lot stronger then your t-5. If youre gonna make that kinda power youre eventually gonna break your trans so if you cant afford the t-56 swap we were talking about in the other thread right now you better start saving up.

85_305

^But burning out/donuts will be ok as long as I dont pop the clutch?
And the way things are looking, swapping out the t5 for a t56 is gonna be a HUGE pita, time consuming project.

DevilsAddvocate

Nope not true, the 9 bolts were kind of a random thing if i remember correctly, some had em some didnt (maybe an option i donno) but i do know that 82-92 camaros ALL had 10 bolts.

Power isnt gonna kill your rear, traction is.

World Class T-5s are not that much stronger than the non WC ones, they are stronger tho, dont remember how much, but it sure was not a lot.

DevilsAddvocate

Probably not, itll take ya 30 seconds to check, go lie under the back of your car look at your rear end and count the bolts. 10 will be a 10 bolt (most likely will be that) if ya have 9 then ya got a 9 bolt. Simple.

85_305

^Lol, ok tomorow while I'm at my gf's house I will check and see how many bolt it is.
But I have heard that *traction*, not *power* is waht is gonna kill my rear.
Anyone have any links to a good girdle for a 10 bolt?

doug791

Agreed that traction is whats gonna kill you. But my car definitly does not have great traction and my 10 bolt is on its way out. One problem with a lack of traction is spinning tires on crappy roads (here in canada since we get such extremes of warm and cold our roads are so uneven) that wheel spin can turn into very bad tire shake which your rear will definitly not like

And true the WC t-5's arent THAT much stronger i would feel fairly confident saying that the non WC ones wont hold at all under 300 hp 350 lb ft where as the WC ones would hold for a while if you werent too hard on it

85_305

^How hard is it for you to keep traction w/ an open differential?

DevilsAddvocate

[QUOTE=85_305
Anyone have any links to a good girdle for a 10 bolt?[/QUOTE]

Summit or Jegs make a girdle, im using the summit one.

85_305

I saw Jegs girdle, how good are they though? They seem REALLY nicely priced.
How much was the Summit one? *holds breath*

Do you think that if I stuffed my rear w/ those richmonds and a better, more heavy-duty girdle my rear end would be set?