09-14-2011, 09:09 PM | #1 |
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Tranny grenaded on Dyno
So what are all the 600+ rwhp cars doing to the 6L80's to hold the power?
Mine let go on the dyno yesterday after doing a 416 forged/stroked motor. Looking to rebuild it now was wanting to know what evryone else is doing.
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09-14-2011, 09:33 PM | #2 |
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Oh man, that sucks!! sorry to hear this. What exactly let go? Hard parts? Clutches, converter? Did the not have the converter seated fully? That will f things up.
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09-14-2011, 09:39 PM | #3 |
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Until more development in hard parts and tunning become common place and proven, I use paddle shifter without full throttle shifts. I have over 10k miles with over 650 rwhp. I know I'm not able to take advantage of auto shift but still have lots of fun running through the gears. That is 4th-6th, the only ones where traction can be found. Dyno presented no problem for me yet. (Knock on wood)
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09-14-2011, 10:10 PM | #4 |
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Why not go ahead and do a built 4l80e and be done with it? Sorry to hear of your misfortune. I always try and be optimistic, so if something breaks its just a good excuse to get better parts.
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09-14-2011, 10:16 PM | #5 |
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Why is the 4l80 better than the 6? Can't you just put better parts in our autos and be set? Forgive my ignorance, just doing a little research for the future.
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09-14-2011, 10:19 PM | #6 |
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I am running in the upper 800hp range in my vette 2800 stall and tranny done by rossler for 1000hp
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09-14-2011, 10:26 PM | #7 |
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Ouch ...I know some one with over 600hp his tranny is gone too.....You have to have Big $$$ to play with the big boys..But I think he has replaced every other part thant can break...so once he gets his tranny that car will Rock!!!
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09-15-2011, 06:11 AM | #8 |
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Circle D say that the stock tranny will start to strain when you get to 440 or above to the back wheels. They have rebuilds that will guarantee to hold 600 to the back wheels.
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09-15-2011, 07:00 AM | #9 | ||
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Quote:
Quote:
600 to the wheels is not enough i am closer to 700, i hear alot of the tranny guys say that the 6l80 will not hold for long after 600 to the wheels no matter what you do to it, wondering if that's true.
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Jannetty Racing 550 RWHP Street Brawler Package, Powered by TVS2300 Maggie http://www.camaro5.com/forums/showthread.php?t=100385 Version II 416ci stroker/4L80e 701rwhp 750rwtq build and tuned by SPI-Performance |
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09-15-2011, 07:55 AM | #10 |
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Well, shit happens. At least now you can make improvements!!
Good luck. Keep us posted. |
09-15-2011, 09:56 AM | #11 |
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Sorry to hear that. My LS1 trany let go when got close to 500RWHP. I hope the 6l80 can be rebuilt to take the HP. Let us know which route you take.
Bill
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09-15-2011, 06:20 PM | #12 | |
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Quote:
If you're building a 700rwhp+ your going to get frustrated with the 6L80's weak points. Circle D has done some great R and D work but the builds now are more demanding. The only disadvantage to the 4L80 conversion is knowing what else to change in the car to make it work. The 4L80's final drive ratio is slightly higher by about 10% on the cruising rpms compared to the 6th gear of the 6L80. The 4L80 will allow you to run a steeper rear gear ratio b/c of its 1st gear ratio of 2.48 verses the 4.08 1st or the 2.38 2nd of the A6. That also means the 4L80 has a narrower set of gear ratios more suited for competition.
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09-15-2011, 08:36 PM | #13 |
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Hate it for ya man,I REALLY feel your pain,mine is done as well,seems these 6L80's are pileing up.I've been studing and doing research,and have come to the conclusion that the 4l80 will be my tranny of choice,for me it's gonna tame my car down sum with the taller 1st gear,There's to many years of R&D on the 4spd to not go that route "IF" your making some big power or plan on it,Just sit it in the corner til they get it figured out
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09-15-2011, 08:54 PM | #14 | |
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