duckJAI

Has anyone swapped a 2GS4 rear diff into a 2GS3 with a 2JZ-GTE? I'm also remembering that the 2JZ-GTE motorswap comes with a 4spd auto tranny, which would make a difference too.

The reason why I'm considering this option is because gas mileage is already bad as it is, and going 2jz-GTE will only make it worse once I start modding it even more. Would there be a significant difference in terms of performance going with the 3.26?

Looking to put a TRD 1.5way into the 2GS4 and reach maximum 400whp.

Also, the 2GS4 pumpkins would be exactly the same as the 2GS3, bolt on affair iirc?

Any input is appreciated, thanks!

PS: car MIGHT be used to some light drifting and track use.
I read in this thread post #13, that the 3.26 gear ratio actually holds the lower gears more from 1-2, compared to the higher gears. Might make a difference while racing?: https://www.clublexus.com/forums/per...lsd-ratio.html

timgs300

iTrader: (22)

If you get the whole assy, it bolts right up.

3UZFTE

Yes, Search. Either order from a dealer new or buy a used from a MKIV Supra owner.

GS FONZy

iTrader: (6)

Does anyone search anymore? yes, it's been done. You only need to swap the yoke from the 3 to fit.

1QWKGS4

iTrader: (3)

The 2G Gs300 has a 3.92 rear and a 2G Gs400 has a 3.26. So if you put a 3.26 on a Gs300.. its going to have more top end but its not going to be as quick on the low end.

StarkoS14

what about keeping the 5 speed auto on the gte? thats what im considering doing. however, a longer 2nd gear in auto would be nice for light drifting, which is what I will be doing sometimes as well

duckJAI

The 5spd auto isn't as strong as the 4spd JDM.

Might as well put the 4spd in if you'll be doing some light drifting like I am.

StarkoS14

what about wiring and the shifter trim, dash shift diagram, ect. its wired for the auto 5 speed, what are you planning on doing in that area to keep it clean in appearance?

duckJAI

^^ that's a good question that I haven't looked into yet. how would you go from 5spd auto to a 4spd auto.

some people say you need the shifter linkage and swap yokes in the driveshaft.

macd7919

iTrader: (10)

You can't use the 5 speed trans on a gte motor unless you run 2 Ecus or have a standalone/transmission control. Secondly, the 5 speed trans is garbage for holding any type of high horsepower, you would be taking a step backwards and doing a lot more work to retain the 5 speed with the gte swap.

You will need the gte shift linkage and you will need to mix and match driveshafts, stock gs stuff will not swap over to the 4 speed.


You don't have to do anything, the shifter assembly from the gs is still used. The gauge cluster functions fine, the only thing different is it will skip over a gear on the dash indicator when manually shifted. The appropriate and correct gear number lights up, it just has a gear indicator which isn't used. No modified wiring is necessary.

duckJAI

^^ I've heard the 95 or 96 LS yoke swaps in with the aristo driveshaft (what's the actual yoke part called if you were to call your local scrapyard to find this piece?)

Is this true? What other combinations are people using?

99 GS3

iTrader: (14)

My 300 is downright boring on the low end 0-60, but 60-120 on the other hand is a blast. I couldn't even image willingly going down in ratio with the stock motor/5spd auto?

3.26 would equal a higher top speed too, which the 3.92's already put the car up to 140ish. I would much rather gain more bottom speed that I would use Everyday, over gaining any extra mph over 140 that I'll never use. I'd rather move up into 4.xx's and lose 20mph top speed. Considering my wife's stock SI demolishes my GS until we hit high freeway speeds, embarrassing.

Building a drift car is one thing, but if it is a daily you say you MIGHT drift a couple times I wouldn't base my gearing and a longer second for that reason. The HKS drift GS is badass (but it prolly cost $100k+ to build), I wouldn't punish my GS drifting as there are way better weighed cars that will be more fun to drift, I'd build a play car to beat the crap out of.

But if moving to the 4spd auto or other swap it may be another story due to tranny gearing and final drive ratio. Don't know about that one.

StarkoS14

good info... didnt realize i needed a drivesahft swap too

i already put a deposit down on my gte clip and it WILL 110% MOST definitely be drifted. i feel the the 4 speed gearing is better for sliding anyway. it will be my daily, but when you drift and have a track to use 10 min away at free will, you have to slide anything and everything rwd.

is there a good link for more info on these swaps? I also need a dif and i heard the 97 torsen dif wont swap into my 2nd gen.

StarkoS14

oh and racing is dumb, so is high speeds. ive never been so bored in a car going straight, even at around 180-190. this is why i need to slide the gs, speed is only fun sideways and with some HP under your foot.

duckJAI

^^get the TRD LSD. Torsen isn't meant for drifting.

TRD is mechanical clutch pack.

It's nice to see a fellow s14 drifter trying to accomplish the same goal with the GS300.

Definitely do-able. I've seen it done by a member here, by the name of "Epik". He did it in a 4spd auto as well.