would a supra 6-speed tranny hook up to a gs400 if so how much would it cost

 

Biggie27,

... GS400 with a Getrag-6? Sounds almost as aspiring as converting a US GS300 into a V300.

You would have to relocate the e-brake somewhere next to the driver's seat. Since the JZS-16# chasis never had a manual gearbox option you would have to map out a mechanical clutch diagram. A reliable used Getrag-6 should run you around $1200. The length of the 6-speed is longer, therefore, you would have to modify the driveshaft.

Now the fun part... the Nippon Denso ECU seems pretty formidable. It controls everything from air-fuel mixture, skid control, braking, throttle (damn!... no use for a vein pressure controller), theft-control, as well as your tranny. You can either disable the ECU operation commands to the tranny or somehow trick it using fuzzy logic. Either case good luck, because that 32-bit processor will just find that irregularity and kill the engine... or all the warning lights in the display will go off. If someone figures out a reliable program for the ECU then a world of possibility will allow us even more upgrades. Don't count on G-Force because UPRD is going through some corporate re-structuring, therefore, progress of the ECU will be hindered once again.

In Japan, a couple of V300s have underwent the transplant. This was made possible because the V300 and the Supra RZ(s) share the same engine and a few characteristics. However, after the transplant the V300 lost all it's orignal comfort and amenties that made it an Aristo. The car was basically an overgrown 4-door Supra RZ.

Anybody else have experience with this issue?

 

That's a good point.

It'll be much easier to add 2 suicide doors to a Supra and make it a Turbo 4 Door GS than trying to make your car a N/A 4 door supra.

 

...philosophically speaking, the S300/US GS300 could be converted into a 5-speed manual (or even a six speed). The Supra SZ does come with a 5 speed manual option (ECU). Heck, early model US SC300s had manual tranny's. So if you don't mind compensating a few "amenties..."

 

I think lexus should have offerd a 6-speed on the gs400 I was considering a bmw 540 6-speed but it cost too much and I like the gs look better but only if it had a six speed then it would have been a serious competitor to the m5

 

You know, it could happen in the future. Mercedes have been using automatics forever, even on the 55series. Finally they're getting some maunal gearboxes on the newer models like C class and C sportscoupe. BMW has always been paying close attention to driving fun. Maybe Lexus will offer some stickshift as well. Starting from IS300, then to the GS and maybe the SC also.

But then again, Japanese philosophy is different from German engineering. We'll see. Maybe in the future, while German cars are still using 6 speeds, most Japanese cars will have sequential 6 speed manual gearboxes. Hahahaha that'll be cool.

 

I could get behind a sequential 6 speed manual!!!!!!! Are you listening, Lexus??