meet07 wrote:I know this is old.........im with matafied. More info on the auto rb26 bellhousing and conversion kit??
The auto RB26 bellhousing isn;t actually an RB26 bellhousing, it is an auto RB20 or 25 bellhousing (they are both the same).
The adaptor is from BDE-Performance (
http://www.bde-performance.com). Brett is a good guy, he did the adaptor for my VH powered 240SX with a TH400.
rb25drag wrote:Man I wish I had an AUTO setup. This 5speed is KILLING My et at the track! Im Loosing a FULL second in the 1/8th mile. My time slips vs a few buddies of mine, Im actaully 60ft them bad But by the 330ft Im .500 behind and By the top end Im 1.000 behind and Im actually 1-3 mph Faster. If I had the $$$$ I would go this route No questions asked!
Good looking setup and awesome write up.
I was able to pull 1.51 60' times consistently with my TH400 setup. Stock VH, 2800lb with driver, 26x11.5" MT ET Streets, stock suspension.
Transbrakes are FUN
meet07 wrote:I want the racthet shifter. If im not mistaking it should almost be similar to the japs tranny which has the bump forward action for upshifting and bumping back for the downshift!!
I had my trans built with a reverse shift pattern and used a ratchet shifter exactly as you describe.
rb25drag wrote:My question is why can't we buy the Rb Auto trans, and Put a Trans Brake setup in it? You would not even need a Stall with a TransBrake. It would be alot cheaper. Im sure its not nearly as strong internally as the th400. But Is there not an option of making the stock auto trans to work?I know he said a while back the Auto seemed to take the balls out of it, But If mine would Pull as hard as it does all the way threw without hesitation of changing gears, It would have way more NUTS!!!
If I don't go to an auto within the next 2yrs, Mine will have a small block chevy with a 101mm turbo with an auto setup. Im ready to go fast and if thats what it takes then Thats what it will be.
The physical design of the Nissan valvebody prevents the implementation of a transbrake.
Also, I'm not sure what you mean by "stall" as the stall is a functional characteristic of the torque converter, not the trans.
WhatsADSM wrote:FWIW, I am pretty sure the OP has actually changed back to the Nissan 5-speed since this thread was started.Third gear on a TH400 is 1:1 so whatever your top speed is with the RB25 trans in 4th gear is what the top speed will be with the TH400 in 3rd (assuming all other variables like FD and tire size are the same).
Also I thought some TH400s had an overdrive option, but don't quote me on that.
He did switch back to a 5-speed, for the driver involvement issue and the fact that he couldn't get the car up on boost for a launch (converter issue, not a trans issue)
The TH400 can be upgraded with a gear vendors overdrive unit, or you can use a 4L80E which is essentially a TH400 with an overdrive. BDE might have a 4L80E adaptor available now...