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How much power and abuse is the stock T56 known for holding?

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Old 03-31-2008, 10:49 PM
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Question How much power and abuse is the stock T56 known for holding?

the more i mod my car the more it goes to the track. right now its all bolt ons, cam, juice, full suspension minus k member, soon to have a texatralia clutch in it and im wondering when should i start worrying about my T56 screwing up? or is it one of those things as with 10 bolts some last for a long time and some dont last under stock driving? is there a "weak" link in the T56's?
Old 03-31-2008, 11:46 PM
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I'm not real sure on what fails but ive heard stock t56 is good for like 600whp.
Old 04-01-2008, 01:20 AM
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Originally Posted by apex1
I'm not real sure on what fails but ive heard stock t56 is good for like 600whp.
my friends ss has 391 rwhp on the stock t-56 but he did have to put in a after market clutch
Old 04-01-2008, 01:56 AM
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ive seen a bunch of guys launching them over and over on slicks pulling the wheels on a stock t56, them seem to be pretty damn strong.
Old 04-01-2008, 02:06 AM
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i have a spec stage 3+ clutch, moser 9", cam nitrous and full suspension car have had no troubles plenty of 1.51 60foots and hard power shifts with my 26 11.5 et streets

but i also heard 600 hp is about all they want but usually a miss shift is were they die at so like i tell my friends that race my car with me if it don't go in gear easy stand on the clutch and try it next pass

however i can't wait to hear more on this topic from more knowledgable people
Old 04-01-2008, 02:20 AM
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mine has over 140,000 on it, has a ram vds clutch, and over 400rwhp, and i spray a 150+ shot. it has taken tons of abuse, all tho it dont shift like it used to and is in desperate need of freshing up, it has never let go, plus it has killed a few posi units too, and still going. I say if you know how to shift then they will hold anything you thro at them on the street and alot of track abuse too.
Old 04-01-2008, 11:54 AM
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i think its more driver error that destroys them more then anything. ive seen 800+rwhp cars be fine with them. all i did to mine was a mild rebuild (syncros and keys)and steel forks.
there actully a pretty beefy trans from the get go other than the aluminum forks that can tweak under hard shifts
Old 04-01-2008, 12:02 PM
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The forks seem to be the weak point (but not too bad), other than that they are pretty stout.
Old 04-01-2008, 12:20 PM
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Stock T-56 here, over 300 passes and 67K miles. Learned to drive stick on it.

Been through racing wile stock, 3 H/C setups, a H/C setup + Nitrous, and driving to school and back for 3 years strait in traffic.

here is a vid of only some of its abuse
http://youtube.com/watch?v=mTSA778AqtA

I honestly think its the luck of the draw, but driver plays a big part of it. I have missed a few gears at the track, I can probobly count them all on my hands, I have never forced a shift, never pre-loaded the shifter anticipating a shift, and on the street I really baby it around most of the time since now a days, the car is useless on street tires.

Hell even tought an Ex-GF how to drive stick on it...
Old 04-01-2008, 01:09 PM
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Its definitly driver related. I asked the same question a month ago. Sixspeedsinc basically said if your going over 700 hp then, possible think about upgrading. If it breaks before that, then consider driver error be it the current or past drivers as a factor.
Old 04-02-2008, 01:35 AM
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Originally Posted by WS6TransAm01
Stock T-56 here, over 300 passes and 67K miles. Learned to drive stick on it.

Been through racing wile stock, 3 H/C setups, a H/C setup + Nitrous, and driving to school and back for 3 years strait in traffic.

here is a vid of only some of its abuse
http://youtube.com/watch?v=mTSA778AqtA

I honestly think its the luck of the draw, but driver plays a big part of it. I have missed a few gears at the track, I can probobly count them all on my hands, I have never forced a shift, never pre-loaded the shifter anticipating a shift, and on the street I really baby it around most of the time since now a days, the car is useless on street tires.

Hell even tought an Ex-GF how to drive stick on it...
Great video man you make it look easy. What RPM are you launching at? Got anymore clips?
Old 04-02-2008, 03:59 AM
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well I powerhsifted mostly stock for like 20,000 miles til I finally killed the 4th gear blocker ring. so I just rebuilt mine with T-56 rebuild supplied parts.. now theyre known as sixspeeds inc.



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