How to change a 6 speed to a TH400

[V8KILR]

I already have an aftermarket ECU for the engine so thats a bonus, I will go with the B&M shifter as I love the instant manual shifting feel.

 

Also is there any main difference in choosing a reverse pattern shifter other then pulling back on the stick to change up?

 

I think you need the reverse pattern if you want to run a transbrake.

 

You can have the shifter go either way as it works by cable so can be mounted in either direction. Reverse pattern refers to internals in the TH400.

[Kaan W]

I think you need the reverse pattern if you want to run a transbrake.

 

Thanks for the help, I want a transbrake so it looks like i'll go with that. Would Summit be a good place to order the bits from?

[V8KILR]

That's were I got my B&M shifter from.

[mark newman]

you need nos to spool on the line, with a transbrake if yo ant to see good numbers also 1000 + bhp will help.

[Kaan W]

you need nos to spool on the line, with a transbrake if yo ant to see good numbers also 1000 + bhp will help.

 

Is it true you can only reach around 160mph as the supra diff ratio is too close for this box?

[mark newman]

don't think so. depends on bhp and tyre size as well but a trap speed at about 160 would be a high 8 /low 9 not bad.

[V8KILR]

Is it true you can only reach around 160mph as the supra diff ratio is too close for this box?

 

I'm running the 3.538 diff and its at 3150rpm at 62mph on the road. At my redline of 8500rpm, that would be about 167mph top speed assuming the converter didn't slip any more. If you have enough power to go faster at the drags, then change to a 28" tire and/or use the 6 speed 3.266 diff. If I did both those things, my top speed would then be over 200mph.