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Old 03-02-2011, 11:25 AM #16
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I have Precision Gear 4.88s with my 315/75-16 Goodyear MT/Rs. My diffs (4.88s and ARBs) were built by Inchworm back in '04...no problems since.
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Old 03-02-2011, 01:47 PM #17
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Quote:
Originally Posted by 05 LTD View Post
It seems like alot of people recommend ECGS but does anyone know what it costs to ship your stuff back to them? I'm on the west coast so I don't see it being cheap.
it says on their website. when you order you can get return shipping labels from ecgs at a discounted rate. they say $45 from the west coast
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Old 04-17-2012, 03:11 PM #18
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WTB 4.56 gear

I want to buy 4.56 gears for my 97' 4runner (285's,arb front bumper, 3'' lift)
but i don't know where can i get. please tell me where can i buy it or tell me what's ECGS or yukons. Thanks a lot!
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Old 04-17-2012, 05:14 PM #19
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Vincent - ECGS stands for East Coast Gear Supply. They are a company in the US that will regear your differential for you with the gears of your choice. They will warranty the setup, replace bearings and confirm all backlash. It's a great option if you don't have a shop that can do a proper regear. There is way more to regearing than just replacing the gears due to the small tolerances that are required for proper functioning. Yukon is a gear manufacturer here in the US.
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Old 08-19-2019, 11:26 AM #20
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Quote:
Originally Posted by brian2sun View Post
My 33s and 4.88s are ok going up the mountain, but nothing to brag about. I'm not getting passed by every car or anything, but I wouldn't call it powerful either. It really depends on your environment, altitude, and driving style, but for me, 35s and 4.30s would make me want to go crazy. I wish I would have gone with 33s and 5.29s. I have added ~700 lbs. to my runner in bumpers, armor, tools, etc.. and that basically feels like pulling a medium-sized trailer all the time. 4.88s with 33s put me back to about stock, but I know I'm a little under stock power with all that weight. And my engine just got rebuilt so it has all the power it should.



I think that's because the 3.slow and 22RE are dogs when it comes to power. Lower stock gear ratios in the 2nd gens helped mask their gutlessness.



x2.
Hi Brian, I have 33s and plan on regearing 4:88s, using TRD alloy wheels; in your opinion, will this be appropriately geared for a weekend warrior and still have decent drivability on the highway? I'm not worried about gas, but rather if the truck will continue to downshift at 65mph. I plan to add bumpers as well. I just don't want to go too steep and not be able to drive in on the road when I'm not trailing. Any education and advice appreciated.

Last edited by Offroading RN; 08-19-2019 at 11:33 AM.
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Old 08-19-2019, 11:56 AM #21
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Quote:
Originally Posted by Offroading RN View Post
Hi Brian, I have 33s and plan on regearing 4:88s, using TRD alloy wheels; in your opinion, will this be appropriately geared for a weekend warrior and still have decent drivability on the highway? I'm not worried about gas, but rather if the truck will continue to downshift at 65mph. I plan to add bumpers as well. I just don't want to go too steep and not be able to drive in on the road when I'm not trailing. Any education and advice appreciated.
Running 33's myself with 4.88's from ECGS. Runs at right about 2500-2700 RPM's between 65-70mph. That is looking at the speedo, which has not been adjusted for the larger tire size, which means it's running about ~74ish when the speedo reads 70mph.
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Old 08-19-2019, 01:28 PM #22
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Piling on, is there any different recommendations between auto and manual trans? IE should manual trans trucks have slightly lower gears VS an equivalent setup auto trans?
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Old 08-19-2019, 01:49 PM #23
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Piling on, is there any different recommendations between auto and manual trans? IE should manual trans trucks have slightly lower gears VS an equivalent setup auto trans?
Manual transmissions have lower gear ratios compared to automatics so taller differantial gearing is recommended for manuals. Example: Automatic w/33's typically 4.88. Where as a manual w/33's will have taller gear ratio in the 4.10-4.56 range.
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Old 08-19-2019, 03:43 PM #24
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I personally would go with nitro gears as someone that actually remanufactures differentials for a living if you had 33s I wouldnt hesitate going 5.29s. Gearing depends on tire size yes but it also depends on the ratio of the transmission gearing as well. Toyotas do well with higher ratios. That's why they can make very little power and remain quite torque heavy on the throttle. I was just out at the dunes all week with my 3rd gen and everyone was asking how I was winning vs chevys fords and 5.7 rams with hemis in them on the sand. Its because of the gearing.
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Old 08-19-2019, 03:46 PM #25
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This might help explain gearing. In a simpler term. YouTube
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Old 08-19-2019, 04:36 PM #26
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Originally Posted by VernySanders View Post
I personally would go with nitro gears as someone that actually remanufactures differentials for a living if you had 33s I wouldnt hesitate going 5.29s. Gearing depends on tire size yes but it also depends on the ratio of the transmission gearing as well. Toyotas do well with higher ratios. That's why they can make very little power and remain quite torque heavy on the throttle. I was just out at the dunes all week with my 3rd gen and everyone was asking how I was winning vs chevys fords and 5.7 rams with hemis in them on the sand. Its because of the gearing.
The only consideration for 4.88's vs 5.29's is that the 4.88 gears are going to be stronger since the ring gear doesn't have to be cut as thin to fit more teeth.
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Old 08-19-2019, 10:24 PM #27
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Originally Posted by weekendclimber View Post
The only consideration for 4.88's vs 5.29's is that the 4.88 gears are going to be stronger since the ring gear doesn't have to be cut as thin to fit more teeth.
The 5.29's have more teeth engaged. Show me one scientific test that proves 4.88's are stronger then 5.29's. It's been an age old wives tale that no one has ever verified to my knowledge. I looked a few years ago and couldn't find anything other than message board arguments with no evidence either way. lol
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Old 08-19-2019, 10:44 PM #28
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Quote:
Originally Posted by theesotericone View Post
The 5.29's have more teeth engaged. Show me one scientific test that proves 4.88's are stronger then 5.29's. It's been an age old wives tale that no one has ever verified to my knowledge. I looked a few years ago and couldn't find anything other than message board arguments with no evidence either way. lol
Size Matters | RANDYS Worldwide

This article seems to say that 5.29's have less teeth engaged compared to something smaller.



This one says:

"Unfortunately, the trade-off is that numerically higher ratios become thicker and therefore heavier. As the ring gear gets thicker, it becomes stiffer, and therefore deflects less. But as the ratio gets numerically higher, the pinion becomes the weakest link anyway, as it becomes smaller in size. This is why most vehicle manufacturers use a stronger grade of steel for the pinion as com-pared to the ring gear."

Techtips - Ring and Pinion Gear Selection for Optimal Performance
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Old 08-20-2019, 10:51 AM #29
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Good info: Gear Ratio Calculator
RPM's listed are with 1:1 gear ratio in trans, auto 3rd gear is 1:1, manual 4th gear is 1:1.
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Old 08-20-2019, 11:16 AM #30
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Yukon is the ones ive used
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