R154 vs R150

[H-Dogg]

I was doing some research and noticed that the R150 5-speed transmission had better gear ratios than the R154. I also found that it will bolt right up to the 1JZ bellhousing! But what I couldn't find is whether or not it would fit under the supra or how much HP it could handle.

 

[The Reaper]

R150??? wtf is that from?

NM its from the toyota trucks

http://en.wikipedia.org/wiki/Toyota_R_transmission

seems to me like 1st thru 3rd are shorter....why not just get a 4.30 LSD?

in the link its says the R154 is the robust tranny....so im sure the R154 is stronger

 

[tissimo]

the r154 gears are all ready pretty far apart, I dont think you want them further..

 

[hottscennessey]

What is wrong with the R154?

 

[OneJSupra]

What is wrong with the R154?

like he said...

 

[tissimo]

better gear ratios.

 

[Ric]

you could always find a V161

 

[IJ.]

But dude ours is 4 better

 

[tissimo]

But dude ours is 4 better

:rofl:

 

[H-Dogg]

Hey Reaper what do you mean they seem shorter? I thought the higher the number the better! And could you give a little more info on the 4.30 LSD

 

[tturnpaw]

buy a 4 speed out of a 2wd pickup. you will love it to death!

 

[H-Dogg]

A 4-speed would be to much fun!!

 

[tissimo]

the higher the number the faster the engine will spin for the same output speed..

 

[annoyingrob]

the r154 gears are all ready pretty far apart, I dont think you want them further..

I don't know, with my 4.10 rear end, I would much rather have the gears farther appart. Of course, I could solve that with a 3.90.

 

[Greg55_99]

I don't know, with my 4.10 rear end, I would much rather have the gears farther appart. Of course, I could solve that with a 3.90.

If you want to replace your R154 with an R150, you'll have to find a 2WD version from 96 on. 96 and earlier have input shafts that are shorter and won't work with the R154 bellhousing.

Got this pic from the web. Thanks to the original poster.

Greg

 

[H-Dogg]

Alright so let me get this straight, is it better or worse to have higher numbers on the gear ratios?

 

[The Reaper]

the higher the number the shorter the gear....

like a 4.30 has a WAY lower top speed than a 3.73 rear end

so in the link i posted.....1 2 3 gear are all shorter in the 150 vs the 154

4th gear are both 1:1 ratio

and 5th in the 154 is longer as well

so all the gears are shorter.....so with a 4.30 rear end in a r154 would be pretty close to a R150 and a 3.73 rear end roughly. you can compensate by putting in a 4.30 on the R154 instead of swapping trannies....

 

[Supra]

http://www.marlincrawler.com/


^^^^ Will be able to answer your R154/R150 questions with 100% accuracy... :icon_bigg