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Old 08-27-2008, 03:54 PM   #1
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Exclamation What stock parts will need to be replaced?

I wonder if any one has, of if GM even released this info yet on how much HP/TQ can the rear axle, transmission, engine itself handle? If anyone knows it would really help me out. Im currently running 575 RWHP through my IROC through a doug nash tranny, rebuilt 406 stroker, and a completely rebuilt rear axle because the stock parts couldnt handle all this. I want at least 600 - 650 through my 5th gen but I don't want it to become a huge project like my IROC did. I wont be ready to buy one until mid 2010 so ill have plenty of time to find out and by then it should at least be known if there is going to be a Z28 because that will solve all my problems. If anyone has any of this information I'd really appreciate it.

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Old 08-27-2008, 04:35 PM   #2
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Nobody knows much yet, but I was told it was holding up to 475rwhp without a problem yet. That is already an improvement over the 3rd and 4th gens, but 600-650 you would be on borrowed time. Expect to need an upgrade for that kind of power.
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Old 08-27-2008, 05:06 PM   #3
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check some vette forums to see how much the stock rear/trans is holding up to their abuse (even tho it will get more abuse from our heavier car)
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Old 08-27-2008, 05:18 PM   #4
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check some vette forums to see how much the stock rear/trans is holding up to their abuse (even tho it will get more abuse from our heavier car)
I guess that would let me know for the transmission but it wouldnt help much for the rear axle.
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Old 08-27-2008, 05:24 PM   #5
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No it won't. Totaly different.
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Old 08-27-2008, 05:40 PM   #6
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No it won't. Totaly different.
I could of sworn i read somewhere that the base vette uses the same exact 6 speed that will be either the manual or auto. I dont feel like looking it up but I'm almost positive i read that. As far as the rear axle i know that it wouldnt help.
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Old 08-27-2008, 05:44 PM   #7
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I think that 8.5" ring gear will have a lot better chance than the glass-jawed 10-bolt did. Since wheelhop has been eliminated, I think I'd be more worried about the tranny. If you keep the Torque Management I think it'll have a good chance at surviving a while though.
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Old 08-27-2008, 05:46 PM   #8
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I could of sworn i read somewhere that the base vette uses the same exact 6 speed that will be either the manual or auto. I dont feel like looking it up but I'm almost positive i read that. As far as the rear axle i know that it wouldnt help.
Ya TR6060 and 6L80 tranny. I was refering to the diff.
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Old 08-27-2008, 06:14 PM   #9
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Well there is only one way to find out. We should know early next year. I think there is a member here that is gonna upgrade the engine right out of the box.
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Old 08-27-2008, 06:55 PM   #10
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Well there is only one way to find out. We should know early next year. I think there is a member here that is gonna upgrade the engine right out of the box.
I'm one of them lol.
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Old 08-27-2008, 08:05 PM   #11
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I read somewhere that the TR6060 that will be available in the Camaro can handle about 450lbft torque. However manufacturers ratings usually have at least a 10% margin of error, that's what they teach in engineering when it comes to that type of application to always give a ten percent margin of error. I honestly can't remember where I saw the torque rating specific to the TR6060 being produced for the camaro I would give a link otherwise. The thing to remember is that the TR6060 trannies are application specific so depending on how much torque the car produces versus how much the car weighs they (tremec) will produce the ideal transmission for the application, to save weigh this may mean that they don't leave a lot of room for extra torque at least not huge gains.
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Old 08-27-2008, 11:09 PM   #12
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You've got me thinking now. I hope the entire drive train won't have to be replaced. I plan on putting about 480 at the rear wheels at the get go, so if I have to replace everything behind the engine to do so, I may just buy a 'Vette instead. We'll see.
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Old 08-27-2008, 11:20 PM   #13
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Some of you guys are a little optimistic...

600RWHP (or even smike07's 480, when launching HARD/slicks)on a stock IRS on a $30K car...

Cars with that kind of HP have been designed from the factory to handle more HP and torque.

I do think that there will be upgrades and the life of the rear depends on the application.
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Old 08-28-2008, 06:50 AM   #14
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I LOVE reading these...because back in 1982 when the Z28 was released with Cross Fire Injection that 305 was rated at 165hp!!! And the 82 Trans Am? 145hp! Yup....no lie....

And now we have this new "Super Star" Camaro coming to the table with 400+Hp....I am not sure what model I am getting, but I do know that I am going to be damn happy with it.....
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Old 08-28-2008, 07:20 AM   #15
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well i would think the TR6060 wouldn't have a problem handling the power bc wthe GT500, the ZO6, the Viper, and i believe even the ZR1 ALL use the TR6060. ALL of them produce substantially more power than the SS. As far as the 6L80e, If its as strong as the 4L80e, we shouldnt have any problem with that either. In stock form they can handle north of 700 ft\lb's. The ONLY thing im worried about breaking is the diff or the halfshafts.
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Old 08-28-2008, 07:33 AM   #16
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Also, Keisler can take the tremec tranny's and get them to HOLD 600+ hp.
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Old 08-28-2008, 08:06 AM   #17
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well i would think the TR6060 wouldn't have a problem handling the power bc wthe GT500, the ZO6, the Viper, and i believe even the ZR1 ALL use the TR6060. ALL of them produce substantially more power than the SS. As far as the 6L80e, If its as strong as the 4L80e, we shouldnt have any problem with that either. In stock form they can handle north of 700 ft\lb's. The ONLY thing im worried about breaking is the diff or the halfshafts.
Heard the same thing, but Jimmy T says it is application specific. Anyone else have any info on what Tremec puts into/takes out of the trans for various manufacturers?

I would say the trans is fine, its the diff, I would be worried about.
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Old 08-28-2008, 09:18 AM   #18
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Has anyone considered checking the G8 forums? We might get a better idea by checking some of their performance applications since its on the Zeta.
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Old 08-28-2008, 02:00 PM   #19
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Some of you guys are a little optimistic...

600RWHP (or even smike07's 480, when launching HARD/slicks)on a stock IRS on a $30K car...

Cars with that kind of HP have been designed from the factory to handle more HP and torque.

I do think that there will be upgrades and the life of the rear depends on the application.
No shit im just trying to see how much I can get out of it. It doesnt hurt to find out just how far I can push it does it?? I'm one of those guys who will always want faster. I don't think this thread was for you.
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Old 08-28-2008, 02:02 PM   #20
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Has anyone considered checking the G8 forums? We might get a better idea by checking some of their performance applications since its on the Zeta.
I woke up this morning and just through of that lol. I'm more worried about having to replace that bad ass independent rear axle then the tranny which since its used in the corvette and all I don't think I will have a problem. Do you happen to have any links to any good G8 forums??
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Old 08-28-2008, 02:53 PM   #21
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I know that one of the people there who was the first to put a TVS 1900 on their car has had no problems with the tranny for a while (I think it was installed in May) and they're pushing about 470 RWHP.
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Old 08-28-2008, 03:10 PM   #22
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run it till it breaks. then figure out how to get a 12 bolt in there....lol
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Old 08-28-2008, 03:37 PM   #23
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Arent the rearends the same as the G8? Arent people going in the 12s with then in the US and in the 10s in Aussie? I know it uses the same Zeta architechure but is it the same rearend?
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Old 08-28-2008, 03:38 PM   #24
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run it till it breaks. then figure out how to get a 12 bolt in there....lol
lol, nine inch
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Old 08-28-2008, 05:09 PM   #25
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I'm running a GT500 w/676rwhp with stock T6060, I've run it hard with absaloutly no problems.. Its the DS, and axles I had to change..
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