Toyota Gearing Opinions

B.DRAKE · May 16, 2015

Needs some opinions on the gearing in my Toyota please...

Well I will start with what I have 87 Toyota 22R 5sp stock tcase 5.29s in the thirds. I have 35s on it now and drive it back and forth to work a lot (60ish miles round trip) it gets about 15-17 MPG but sum bitch is running tight at about 60-65 MPH but perfect off road what little bit it has been, been thinkin about goin to 37s to help the gear ratio on the road but afraid it would kill it off road, would 37z help it any on road? Or go 4.88s with 35s, or just run it like it is??

Just hate it running such high RPMs at speed but don't wanna compromise MPG, and help or experience will be appreciated

Thanks!

muddinmetal · May 16, 2015

B.DRAKE said:
Needs some opinions on the gearing in my Toyota please...

Well I will start with what I have 87 Toyota 22R 5sp stock tcase 5.29s in the thirds. I have 35s on it now and drive it back and forth to work a lot (60ish miles round trip) it gets about 15-17 MPG but sum bitch is running tight at about 60-65 MPH but perfect off road what little bit it has been, been thinkin about goin to 37s to help the gear ratio on the road but afraid it would kill it off road, would 37z help it any on road? Or go 4.88s with 35s, or just run it like it is??

Just hate it running such high RPMs at speed but don't wanna compromise MPG, and help or experience will be appreciated

Thanks!

Dual cases are the answer offroad & 37s will only drop it approx 200-300 rpm on road

B.DRAKE · May 16, 2015

muddinmetal said:
Dual cases are the answer offroad & 37s will only drop it approx 200-300 rpm on road

I wish it had a tach to see what RPM it was running

TBItoy · May 16, 2015

B.DRAKE said:
I wish it had a tach to see what RPM it was running

At 65 you are only turning 2800 rpm. Only about 2-300 over what it would be stock.

I'd run it as is. Put quite exhaust on it if it has a glass pack or something now.

37s will only drop you 150 rpm at 65.

85toyo · May 16, 2015

I had 4.88s and 37 Iroks on my old truck. It was great on the road but 5.29s would have been nice offroad.

zukimaster · May 16, 2015

I had pinto beans yesterday, and I turned 2800 rpm's

smbroady82 · May 17, 2015

Mine has 5.29s and dual 2.28 cases, and 37s

complete turd on the road, I don't know how you get yours up to 65

off road I like it, usually put around with the front case in low in 2wd, or 4wd if needed on hills

off road, high/high wont pull crap if I am on any kind of hill

I probably just don't know how to drive though :dunno:

bluetoy · May 17, 2015

You should be getting slightly better MPG's than that. I've daily drove many trucks with 5.29's and 35's and usually always get 17-19 mpg on normal driving and close to 21 on long trips. My white '82 that I DD gets consistently around 18mpg with the same gear/tire and it has a big 38mm Weber Carb that does not help the mileage.

Is your truck EFI or carb ?

Going to 37s will hurt the mileage due to more rotating weight lugging the engine more. RPM's are not everything with a 4cyl, it's all about keeping the engine in the most efficient power band.

B.DRAKE · May 17, 2015

bluetoy said:
You should be getting slightly better MPG's than that. I've daily drove many trucks with 5.29's and 35's and usually always get 17-19 mpg on normal driving and close to 21 on long trips. My white '82 that I DD gets consistently around 18mpg with the same gear/tire and it has a big 38mm Weber Carb that does not help the mileage.

Is your truck EFI or carb ?

Going to 37s will hurt the mileage due to more rotating weight lugging the engine more. RPM's are not everything with a 4cyl, it's all about keeping the engine in the most efficient power band.

It's a factory carb that prolly needs some tuning or just ditch it and put a weber on it

Draco · May 17, 2015

B.DRAKE said:
It's a factory carb that prolly needs some tuning or just ditch it and put a weber on it

Buddy at work tuned on his for a while without any real success. Put a weber on it...Runs like a new one and about 5mpg more.

bluetoy · May 17, 2015

B.DRAKE said:
It's a factory carb that prolly needs some tuning or just ditch it and put a weber on it

That's probably the issue. You need to bring it out and let me check it out for you.

B.DRAKE · May 17, 2015

bluetoy said:
That's probably the issue. You need to bring it out and let me check it out for you.

I will do that! I will send you a PM bud thanks!

Yotanut · May 28, 2015

I run 37s with 5.29. About as close to perfect that you are gonna get. Struggled with 35s and 4.88s. I bought a sr5 gauge cluster off ebay that came with oil pressure sending unit. New cluster gives you tach, voltage gauge and oil pressure gauge. Plugs right into factory harness. Dual cases is the way to go off road but means having to have custom length driveshafts made. Have no experience with changing the gear ratio in a single case may work better since you can keep stock shafts

B.DRAKE · Sep 22, 2015

Well I have been driving this quiet a bit now (about 70 miles a day, 5-6 days a week) since my wife had a wreck in her car, so I been letting her drive my Duramax. Anyways, redid some figuring on MPG and it's around 18-19 depending on how much stop and go I do. Very happy with that but I still think it's turning up to high at speed but it doesn't seem to be bothering it too bad I don't guess. I have got to get it up to bluetoy sometime whenever I get time and let him tinker with it some!