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-   -   high horse power overdrive transmissions (https://www.lateral-g.net/forums/showthread.php?t=1595)

rocketman 02-17-2006 03:21 PM

Quote:

Originally Posted by Speedster
Wow Rocketman -
That is one sick car... Have any pics ? :D
It just sounds mean.


No,i have more pic's of other people's car's than mine.I am not a big photo taker of my builds.I have it takin apart for freshing right now and haven't run the motor on the street yet.It was my race motor i detuned :D a little bit.

I do have a few pic's i did take of it apart right now and some race pic's from last summer i will try to post.

Y-TRY 02-20-2006 05:57 PM

Wow, I feel bad with a lowly TKO 500 now. But my thinking is this: The system will break at its weakest link. Right now, the point where the tire meets road is the weakest link. As long as I don't hook I'll be fine, and hooking is pretty hard to do.

I'm a Tremec fan, after doing research. Can't go wrong there.

jeffmort 02-23-2006 11:31 PM

Here is some Tremec TKO info that may of interste to you:

Tremec rates the TKO600 to handle 600 ft.lbs of torque. With that said, we know of guys that are running high horsepower cars 700+HP with the TKO's and they have not run into any problems with the Tremec handling the HP. I regularly talk with the guys at Tremec (last time was 2 days ago to re-confirm this info) and ask them if they have heard of any TKO failures due to high horsepower applications and to date the answer has been "no". With that said, I am sure that someone will eventually break a TKO due to a high horsepower. It is posible that someone has broke one but I have not heard of it yet. When you play in the high horsepower arena eventually something will give - be it a clutch, driveshaft, rear end, or TKO transmission.
During my call 2 days ago, the Tremec guy did tell me that they ran into a case where a TKO input shaft was twisted. The transmission did not fail but the owner noticed that the input shaft was slightly twisted when he was changing his clutch. The car that did the twisting was mid-9 second race car with a 680 HP blown motor, 10.5" slick tires and that regularly launches at 5800 RPM's. This car is exclusively a race car and the input shaft twisting occured after a season of racing (approxiamtely 100 passes). Tremec is currently testing the input shaft to see why it twisted. This is the only report that Tremec has receievd from a TKO owner since the TKO was released 2 years ago.

The Tremec TKO gig testing was done on a static gig where the output shaft was secured and the input shaft was hit with increasingly higher torque loads. The gig ended up breaking at 1400 ft./lbs of torque while the transmision was undamaged.

The one negative issue on the TKO's that we have seen is high RPM shifting at 6500 RPM's and higher. The TKO does not seem to want to shift properly at these levels. This is not a shifter issue, rather it is a transmission internals issue. Th eTKO can be moded to help thi sproblem - the mod involved removing teeth from the blocker ring - the amount and location of tooth removal depends on whether you are drag racing or road rcaing.

The bottom line is that the TKO is an excellent and very strong street & strip transmission that is suitbale for most of our applications - even the high horsepower applications.

The cases where the TKO may not be the first choice is if you have a dedicated race car where you need to be shifting at 6500+ RPM's.

I hope this helps.

Speedster 02-24-2006 06:53 AM

Thank you sharing some of your TKO expertise Jeff. It is good to hear the facts from a reliable source such as yourself. I am pleased that Tremec have not had any reported failures even with such extreme torque loads. Like you said, it will be broken, just a matter of when, but in the meantime, very cool. :D

rocketman 02-24-2006 07:02 PM

i have a 94 z with a t-56 and it runs 9's with no problems.i just put a tko 600 in my 69 vette,i havent got to drive it yet put it seems real stout.

t-56 will take alot of abuse,i haven't had any exp with tko yet.

Steve1968LS2 02-24-2006 10:57 PM

Quote:

Originally Posted by chevzilla396
im getting off of the subject lol
anywho what would be my best bet for a transmission
im lookin at the G-force t56,
ive been trying to find some hp ratings on the the richmond 5 speed, 5 speed road race and 6 speed overdrive trannys (the 6 speed looks good), and a D&D t56. Also is there a company that makes a really strong tko?

Rockland Standard Gear has a new one they call "transzilla" that can handle something like 1100hp (it's a T56).. but it's EXPENSIVE..

Then of course you have to get a clutch that can take it :)

Steve1968LS2 02-24-2006 10:59 PM

Quote:

Originally Posted by Speedster
Thank you sharing some of your TKO expertise Jeff. It is good to hear the facts from a reliable source such as yourself. I am pleased that Tremec have not had any reported failures even with such extreme torque loads. Like you said, it will be broken, just a matter of when, but in the meantime, very cool. :D

BTW.. I can highly reccomend Classic 5 Speed if you need to get a tranny from someone.

Even the stock TKOs and T56s can take quite a bit of power.. go to ls1tech.com and see how many guys are putting 600hp through bone stock M6's..

Speedster 02-25-2006 06:58 AM

Thanks Steve-
I would have liked to have spoken with Jeff earlier in the process for my application. I would still like to ask him about the McLeod Hydraulic Throwout bearing plumbing.

Has anyone here set up this hydraulic TO bearing yet ?


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