New tci 6-speed??

[ponchopwr70]

Was just reading TRUCKIN and saw that tci is coming out with a 6-speed auto. Researched it and seems its a 4l80e with two gears added to it. Wonder what you guys think about this. Prob going to cost a few bucks though. I would think it wouldn't be as strong adding two gears to a four speed.

[MonzaRacer]

Probably the new GM/Allison 6 speed borne of the 4L80E

[TCI]

It's is actually a 4L80-E with a different planetary set (to change the ratios) with changes made to the valve body and to the TCU that it comes with. We do not have the final price yet, but it will be a complete package down to the dipstick.

[critter]

Need a guinea pig? I'm in Little Rock.

[TCI]

We'll keep you in mind!

[critter]

HMM. Started to say something in public but better in a PM. ;)

[MarkB]

As stated, this is just a 4L80-E not the Allison. This setup works well, we have been testing a package like this in our shop truck for about 12 months now, seems very strong & dependable, we drive it daily and have several thousand miles on it. The six speeds is done by splitting 1 - 2 & 2 - 3 shifts. So you get 1st, 1st overdrive, 2nd, 2nd overdrive, 3rd & 4th. Many people feel that you are gaining a different overdrive ratio, but this is not the case. It is giving you a close ratio automatic six speed with a .75 overdrive ratio. I have to say I like the package, you can change at a touch of a button to be 4 speed, 5 speed or 6 speed. Same controller options and settings, each gear can be programmed just as the 4 speed version. You can use Steve's Paddles to operate each gear as well! The size of the transmission doesn't change, the stock pan is used, there is no visual difference externally. You can use many different gear ratio options just as available for the 400 to get the gear ratio spread that you need.
John Meany done this several years ago. It is a great package. We will be offering our 4L80 Six Speed complete transmissions this year as well.

[Karch]

I'm interested as well.

Perhaps two, if it will integrate into my Trailblazer w/o throwing codes and such.

[ponchopwr70]

So pretty much its like having a gear vendors, just inside the trans?

[critter]

Price?

(If you have to ask you can't afford it?) ;)

[TCI]

The TCI version will come with an aftermarket planetary that has 2.97, 2.23, 1.57, 1.18, 1.1, .75 ratios as well as aftermarket mainshaft, input shaft, sprag assembly, stock depth pan and clutches. The complete package will come with transmission, converter, our TCU w/harness, paddle shifter for manual option, dipstick and cooler.

We will also have our transbrake 6-speed ready this spring.

[Turbo67camaro]

Very cool. Bit late for me as I finished a 4L80E about 4 months ago. I'd have gone the 6 speed route if it was done sooner and the price was reasonable.

I don't see the value in having two gears so close (1.18 to 1.1).

Add engine braking!

Good stuff!

[ponchopwr70]

Im probably going with a gear vendors almost the same thing for less right now.

[wcardoc]

I emailed TCI yesterday and was told $5500.00 range.
Not Cheap but if it works
Anyone here know if I have to modify the firewall on a 68 Camaro to make it fit or will it basically bolt in?
Thanks

[TnBlkC230WZ]

What are the first and second gear ratios? the .75 overdrive is fine with a low first gear and a 3.08 - 3.42 axle.

[critter]

$5,500? Sheesh.

[rjsjea]

$5,500? Sheesh.

Did you see what the TCI unit comes with?? (converter,controller,paddles etc..) That price doesn't seem bad at all......

[All Fired Up]

What kind of hp is this tranny rated for?

[Turbo67camaro]

If you have a stock subframe and stock height subframe bushings, a 4L80E should fit without having to massage the trans. tunnel, as Steve put it, with "Mr. Hammer".

My 4L80E fit into my 67 Camaro without tunnel mods (SBC, stock subframe, standard height body bushings). I used a custom trans cross member from PATC.

I'm happy with the choice. Couple more gears would be nice though.

[wcardoc]

Thanks Turbo67 that helps. The add from TCI says it will handle up to 850HP. As someone said above if it comes with everything then it's not really too far out on price.