Gearing auto v6 4.10-4.30
 

On my 89 with an auto V6, I was wondering if the 4.30's would be good for 33" tires. I can get the 4.30's dirt cheap complete. Would going from a 4.10 toa 4.30 help a little?

Thanks, James

I dont think it would be worth the money.

2 of my friends had auto 3.0's with 33's. One had 4.88's and one had 5.29's. The guy with the 4.88's said he wishes he went with 5.29's.

Soooo...5.29's and auto/3.0 with 33's seem to be the best match.

You want a minimum of 5.29 with 33's and the 3.0/auto. I've run 4.88, 5.29, and 5.71 ratios with the 3.0/auto and 33's. The 5.71 was the best gear ratio, the 5.29 is a little too tall for the 3.slow auto OD (4th gear) but is liveable. 4.88 or God forbid 4.30-4.10 will make OD useless and leave you with a 3-speed truck.

I could care less if I have overdrive or not. So how well would it work without the oeverdrive? I could care less about overdrive.

James

What do you care about? Is this a trail-only truck? Lower gearing is best on the trail too. Have you got a dual crawler already?

I dont care for overdrive. Lets just pretend I have a three speed automatic. I know many members here using 4.10's with 33". All I want to know is how well would it do for trails and daily driving. Let's face it, the V6 in stock form sucks for gas mileage so I'am not worried about that. Besides I'am not rock crawling so I dont need a dual crawler. Lo range works perfect for those tight situations. Most of the people here are hardcore and need the steep gearing, I on the other hand don't need it since I won't be going on really steep grades or rock crawling.

James

Damn, so 4.88, auto and 3.0 with 33's is a sucky combo huh? Wish I would have known that when I regeared my 1st gen 4runner 3 years ago. 4.88 is what precision gear recommended. I was pretty let down by the results. Do you think if I regear to 5.29 I will notice a huge difference and be happier?

If you get rid of your gears soon let me know. I will be interested.

James

Huge difference no, happier yes. One step in gearing will not be a big difference, if you go from 4.88 to 5.71, then yes that is a big difference.

What will it be like on the highway with 5.71's?

When I was running 5.71s it was the only time I was truly happy with the 3.slow. The top speed and still keep it below about 4000 rpms was about 85mph (speedo was not true). But the best thing was I could hold my speed in the 60-85mph range in OD up little hills and into a headwind without any problems. If I needed to pass on a 2-lane road the acceleration from 60- 90mph was great. Why the Toyota engineers would want to gear these auto trucks from the factory to go 120+mph I'll never understand. I could understand if they had given the truck an engine that could pull the gearing but the 3.0 can't come close. Even brand new in 1993 my factory gearing (4.88 with 31" tires) was ridiculous, the truck would bog down at 70mph in OD and have to down shift to 3rd gear for slight inclines.

So you think I would be happiest with 5.71's? I use this truck as my daily driver. I never really go over 75 mph. How about going over mountains? I drive over the Blue Ridge mountains on a regular basis and it seems like it can barely make it. Also, are you running 5.29's and why? What would my rpm's be at 75 with 5.71's? Thanks for the help.

With a true 33" tire at 75mph you will love that gearing, that will put you right at the sweet part of your power band, like around 3500 rpms. Perfect for mtns, also what some people don't realize is when you lower the overall gear ratio you also make all your gears 1st-4th a little closer together, so you don't have so much of a lag time between gears waiting for the engine to get up to the power band, also perfect for mtn driving.

Why do I have 5.29s now? That is a long story, but basicly a mistake on my part. I found my 5.71s didn't last as long as I hoped (Genuwine crap Gears), the pinion gear started pitting out and making a lot of noise after about 40,000 miles, by 45,000 miles the noise was terrible and I had to replace it. It had been 5 years since I had gone to the 5.71 ratio and I had forgotten what ratio 4 Wheel Parts had installed for me, I was thinking they had put in 5.29s so that was what I ordered (US Gears this time). The first time I went into 4wd I discovered very quickly the rear ratio didn't match the front :( After driving with the 5.29s in 2wd for a while I decided I could live with them, so I decided to switch the front to 5.29 US Gears too. As it turns out I'm doing a 3.4 swap now so the 5.29s are better than 5.71s for that engine anyway.

Man this is crazy, why does everyone always recommend 5.29's? And why did Precision Gears recommend 4.88's? Guess I am gonna go with 5.71's. Thanks for the info.

for most people 5.29's with a Auto and 33's put you where you'd want to be, close to stock gearing.
I've got 33's with stock gearing and 5 speed, and will be looking at getting 5.29's with the plan of going to 35's next tire purchase.

My guess is they were refering to a 5 speed tranny. 5th gear in the 5 speed is lower than OD (4th gear) on the auto. So with a 5 speed not only do you have an extra gear but all the gears are also closer together in size.

Another reason some say to go with the 5.29s is the gear is suppost to be a little stronger than the 5.71s. Zuk has some good info on that, I'll find it for you.

Here it is: http://www.gearinstalls.com/410suck.htm

Good info...thanks. Anybody else have opinions on this? 5.29 or 5.71 gears with a 3.0 automatic and 33's? Not that I don't trust you mtgoat, it's just if I am going to spend another $1000 on this I want to be happy with it.

I dont see going that steep just to run 33's. Heck I hate to ask what the people on here with 35's run? :laugh:

James

well, theres quite a few people on here running 33's with 5.29's and the 3.0 auto. mt. goat is the first person that i've heard mention 5.71's. not that its a bad thing, I just haven't heard of anyone running that gear set.

Here are a few more considerations. Are you running a true 33" tire? (measure if your not sure as it will make a difference). I was running 33" BFG Mud-T with the 5.71's and they measured a true 33". Also if you are the type that runs a tire until it is almost bald, a 33" mud tire will shrink to under 32" when bald.