Tremec TKX

[another69]

Has anyone seen this? Looks like a direct swap for a TKO600/500? Better synchro design & more compact. I'm interested...

[badazz81z28]

Yup....TKO 500/600 rescinded....TKX the new design. I don't know what you mean "Looks like a direct swap"...its the same transmission with a better case and better synchros.

[andrewb70]

..."Looks like a direct swap".....

Meaning that if you have a TKO already installed, the TKX will bolt right in.

Andrew

[badazz81z28]

Meaning that if you have a TKO already installed, the TKX will bolt right in.

Andrew

Yup, 4 speed bolt pattern and a video I watched said its the same length as the TKO. I don't think it would be worth the money to swap the TKO600 to the TKX.....Its the same transmission. A current TKO 600 owner would be better off to upgrade the trans. Re-sell on one isnt going to be great.

[andrewb70]

...Its the same transmission. ....

That is false.

Andrew

[badazz81z28]

That is false.

Andrew

Worth explaining yourself...

Its obvious it has a different case and upgrades made to it...but it said, "Gear set ratio is identical"... "Same overall length, mount location, shifter position as the TKO transmission"

https://www.youtube.com/watch?v=NUDDYWDi7yY

[Interceptor5588]

Looks great. The main reason I didn't opt for a manual trans in the Goat was that I'm not willing to cut the tunnel. Looks like it's on the table again...

[anguilla1980]

Nice, looks like they upgraded a few bits to be on par with the T56 Magnum internals like synchros, shift detent, etc.

[another69]

I was just about to pull my 600 to do the carbon syncros, etc. Glad I waited, new plan is just swap in the TKX! We'll see how long it takes to get one and if there are any issues. Looks like they may just phase out the 500/600? The pricing is close

[Bigblue73]

From information that I have gathered, since I make products for these swaps, is the reshaping of the transmission main case allows greatly improved tunnel clearance. In a very comprehensive video done by SST (if you haven't seen check it out), the LGT700 case is held up in comparison with the TKX and the TKX shares a similar profile as the LGT. Bottom line is no cutting for GM A-Body, Mopar E-Bodies, Mustangs. The question that I have with all the improved internals, why the need for double overdrive. Did Tremec just kill the sales of the T56 as the TKX has everything it has? Either way, Bowler, SST, American Powertrain, Modern Driveline and others are all going benefit from the renewed interest of swapping a 5-speed with no cutting. Nice job Tremec. I'm looking forward to doing the Mopar E-Body conversion again.

[ilikeike]

I thought everyone upgraded the synchro's when they bought a TKO 600. I did.

Maybe the TKO will get cheap now.


If I needed a new trans, I'd consider it.

[andrewb70]

I thought everyone upgraded the synchro's when they bought a TKO 600. I did.

Maybe the TKO will get cheap now.


If I needed a new trans, I's consider it.

I suspect it just goes away.

[another69]

From what I understand, the TKO syncros are an older / different design. Even upgraded (what I was going to do) it's basically a band aid and won't shift at high rpm as the t56/ TKX. Also fits tighter & has gaskets now with different case

They basically make the TKO what it should have always been. Basically a lighter t56 with 5 gears instead of 6. An upgraded tko isn't the same as a TKX.

[badazz81z28]

From what I understand, the TKO syncros are an older / different design. Even upgraded (what I was going to do) it's basically a band aid and won't shift at high rpm as the t56/ TKX. Also fits tighter & has gaskets now with different case

They basically make the TKO what it should have always been. Basically a lighter t56 with 5 gears instead of 6. An upgraded tko isn't the same as a TKX.

Depends on what you want....I had the shift tabs and the blocker/synchros upgraded in my TKO 600 and I shifted it at 7000rpms. I'm not defending the TKO....just facts.

[Sbeck09]

Ok I have inside info from 2 individuals sent preproduction units for testing. I am a current TKO600 owner for reference. I have hated shifting my TKO from almost the beginning. Any shift over 5000 rpm is TERRIBLE and it is just clunky feeling at any RPM. I was spoiled having driven many cars running various versions of the T56 and regretted not going that route with my project.

What I was told is that the TKO design is in the same family as the old top loaders. So no matter what you upgrade, it is still going to have clear limitations. The TKX brings in the significantly more modern internals of the Magnum trio. Larger gear sets, cone synchros, better shift forks, etc. These are NOT the same in any way aside from the ability to bolt-in the TKX where a TKO was before.

Of these two individuals, one has driven with the trans. He said the shifting at any RPM is night and day improved from the TKO twins and shifting above 6000rpm isn't even a fair comparison because the TKX blows the TKO away.

So as a TKO owner, I was looking at faceplated gearsets to try and somehow improve this thing when racing, but the price of the TKX makes that really not worth it in my case. I'll be eventually selling my TKO to swap to the TKX. The TKO is still great for a hot rod, but if you are road racing like I am....no way. Tremec intends to just phase out the TKO twins and the TKX will fill that "void" moving forward.

I do not believe the T56 is at risk of being replaced. It still very much serves a purpose to have 6 gears and the larger power rating. The TKX simply gives a long overdue 5 gear option that will work with modern demands in tight spaces. Tremec will continue to dominate the manual swap realm for a long time to come by making this move. I applaud them.

[badazz81z28]

Larger gear sets, cone synchros, better shift forks, etc. These are NOT the same in any way aside from the ability to bolt-in the TKX where a TKO was before.

Tremec intends to just phase out the TKO twins and the TKX will fill that "void" moving forward.

Where did you get the info that the gear set is bigger? The video released from
Bowler Transmission says other than 3rd gear the gear sets are identical???

I don’t think anyone assumes Tremec would still produce the TKO. It’s a generation change...the 3550 is gone..the TKO II is gone, it makes sense for the TKO to go as well.

[rchaskin]

Where did you get the info that the gear set is bigger? The video released from
Bowler Transmission says other than 3rd gear the gear sets are identical???

I don’t think anyone assumes Tremec would still produce the TKO. It’s a generation change...the 3550 is gone..the TKO II is gone, it makes sense for the TKO to go as well.

Third gear size comparison is in this video. At about 1:29.
https://www.youtube.com/watch?v=NUDDYWDi7yY

[badazz81z28]

Third gear size comparison is in this video. At about 1:29.
https://www.youtube.com/watch?v=NUDDYWDi7yY

Yes...Just 3rd gear. Which is also an upgrade you can do to your TKO....

[another69]

I ordered mine too.

You can't "upgrade" a TKO to become a TKX.

This thread was started to concentrate on any info that anyone has about the TKX. I think it's very clear that a TKO is not a TKX. Some similarities? Sure, but not the same.

[andrewb70]

Great post, Shaun!