3000hp liberty gearbox for RB. I want it

[khezz]

Liberty make transmissions for RB 25/26. basic unit is rated for 1500hp and next one up is 3000hp. Come in 3,4,5 speed and unlimited ratios. Clutchless. Prices are in USD but still seem way cheaper then any sequential. These things seem to be just about unbearable. Why isn’t any one using one in a GTR?
 

 

[khezz]

[joshuaho96]

15 hours ago, khezz said:

Liberty make transmissions for RB 25/26. basic unit is rated for 1500hp and next one up is 3000hp. Come in 3,4,5 speed and unlimited ratios. Clutchless. Prices are in USD but still seem way cheaper then any sequential. These things seem to be just about unbearable. Why isn’t any one using one in a GTR?
 

 

Supposedly those are drag-only and can only be shifted up. To go back down a gear requires going into neutral to reset the shifter then trying to rev-match your way into the desired gear.

[r32-25t]

Because they are a drag only box and only shift up while moving, you need to be stopped to go down  

[GTSBoy]

17 hours ago, khezz said:

These things seem to be just about unbearable.

Typo is appropriate.

[Ben C34]

They also pop out of gear when lifting the throttle. 

 

For drag use only they are awesome

[Ben C34]

And you have to cut a massive hole for the shift linkages!

[khezz]

Well I’ve sent them a message asking if the transmissions in question are streetable and what’s involved in fitting one. We will se what happens. I’m still surprised that none of the dedicated drag cars run them if they are a proven product in much much faster cars. 

[Murray_Calavera]

Surprised this hasn't been mentioned, they pop out of gear if you let go of the shifter. So yeah, hand off the shifter and your back in neutral. 

So no, not a streetable gearbox for this reason and all the other reasons listed above. 

[GTSBoy]

It's totally streetable. It's just that the streets are pretty short and have lots of concrete barriers, lights and a return road.

[r32-25t]

With the way people have to fight the steering wheel in these cars to keep them straight, I’d hate to be having to do that with one hand because of not wanting to end up in neutral if I use both 

also if you miss a shift, it’s a rebuild and you need to cut a big portion of the floor out to get everything to fit 

[r32-25t]

that video explains fairly well about how they work, if you look the at the dogs they’re a ramp on the back edge so as soon as you back off it’ll throw it into neutral as well 

[niZmO_Man]

On 19/03/2023 at 9:16 PM, GTSBoy said:

It's totally streetable. It's just that the streets are pretty short and have lots of concrete barriers, lights and a return road.

So applicable... if you live life [drive?] a quarter mile at a time.

[Dose Pipe Sutututu]

Plenty of street car GT-Rs

JUNII VW Amarok. 

[Dose Pipe Sutututu]

Fits nicely in a R32 those liberty boxes.

 

[GTSBoy]

Look at that clumsy bunch of shift linkages!

[admS15]

OEM++++

[Kinkstaah]

All of this just to say you drive a "manual" drag car.

[r32-25t]

You’ll find it’s a requirement in certain classes of drag racing 

[The Bogan]