Getting ready for 4:88's. Any recommends for a quality brand and decent price?
4:88 Gears
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Unless you are going 37" with new lockers I don't see the benefit.
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- #3
I've owned it for around 6 months and as most folks say an 80 is anything but overpowered. I suffer most in the hills when driving to and from trails. I'm usually one of, if not the, slowest. Recently, another 80, weighing slightly more than me but otherwise same model, equipment, lift, tires,etc. but with 4:88's passed me going up Sunset Point. Up till then I did not feel the gain would be worth the $$Pain, but now, not so sure.
Ironic...their banner was in the top right as I hit post reply...
Nitro gear sets from JT diffs (NOT JT outfitters)
Nitro gear sets from JT diffs (NOT JT outfitters)
I've owned it for around 6 months and as most folks say an 80 is anything but overpowered. I suffer most in the hills when driving to and from trails. I'm usually one of, if not the, slowest. Recently, another 80, weighing slightly more than me but otherwise same model, equipment, lift, tires,etc. but with 4:88's passed me going up Sunset Point. Up till then I did not feel the gain would be worth the $$Pain, but now, not so sure.
The biggest problem I see with guys 80 is they are afraid of the skinny pedal. With that said I have friend with the same basic set up as mine. He just installed 4.88 gears along with lockers. Recently we did a 300 mile trip up in northern AZ. Travel was ~225 miles of pavement and ~70 miles of dirt, ~1/2 of the dirt in low range. Pulled all hills at the speed limit went the same places at the same speeds and gassed up at the same places. In the end he use .14 cent less gas then me with a combined MPG of 13.1 GPS.
With a .14 saving at 300 miles you will spend a lifetime for a payback. If you need lockers I would change the gears otherwise I would just push the skinny pedal harder.
Check my trip post on the CSC board from the past summer. I frequently go up Hwy 87 in the middle of the day with AC on and pull every hill at speed without over heating (thanks to a Tools fan clutch)
I have Nitro 4.88's in mine (with 33's) and they are doing just fine. Don't forget to buy install kits as well.
really?
I've had my Precision Gears for about 6-7 years no problems..
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Easy choice.
Nitro gears from Just Differentials.
Nitro gears from Just Differentials.
Precision and Nitro front and rear. I'm only running 33's but the difference in performance was well worth the cost (I did mine with the ARB locker install)
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- #11
The biggest problem I see with guys 80 is they are afraid of the skinny pedal. With that said I have friend with the same basic set up as mine. He just installed 4.88 gears along with lockers. Recently we did a 300 mile trip up in northern AZ. Travel was ~225 miles of pavement and ~70 miles of dirt, ~1/2 of the dirt in low range. Pulled all hills at the speed limit went the same places at the same speeds and gassed up at the same places. In the end he use .14 cent less gas then me with a combined MPG of 13.1 GPS.
With a .14 saving at 300 miles you will spend a lifetime for a payback. If you need lockers I would change the gears otherwise I would just push the skinny pedal harder.
Check my trip post on the CSC board from the past summer. I frequently go up Hwy 87 in the middle of the day with AC on and pull every hill at speed without over heating (thanks to a Tools fan clutch)
I admit I'm a little worried to get too aggressive on the skinny pedal. I have seen much carnage when a driver gets on that pedal when off road.
That said, I worry about tranny temps when pushing hard on the pavement especially in the summer. Do you have a separate temp guage? The PO of mine at least installed an additional tranny cooler.
I haven't found a scan guage that can show the tranny temp so I assume our trannys don't have a temp sensor built into the ECM or it would show up on a scan guage. Would you agree?
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- #12
Any opinion on IPOF gears? Complete Re-Gear Package [SG-REGEARKIT] - $649.00 : Iron Pig Off Road, Toyota Land Cruiser experts Seems like a good price or is Just Diffs better?
I would do a search, the opinions on "To Gear or Not To Gear" are just that, opinions. Do your home work, look at the money, and decide if that is what you intend to do. I am sure you are going to find some are saying "I should have went with 5.29's now that I am getting 37's"
Again, just opinions and there is no right or wrong.
Again, just opinions and there is no right or wrong.
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- #14
Thanks AZTony, you're probably right! It gets down do what gives the most punch for the buck. When I win the lotto I'll go for a supercharger
Go with 5:29s. I wish I had somesthing even lower. You can still cruise around 70mph no problem and keep it under 3k rpms....the "powerband" on this motor feels like it starts at 2500 and goes to 3000
Oh, I think I had "Sierra" brand gears installed. I think most are made in china anyway.
Oh, I think I had "Sierra" brand gears installed. I think most are made in china anyway.
Love my 4.88's and 37's. The performance side of things both on and off road are worth the expense, IMO. With 35's and 4.88's I felt there was a bit too much rpm at highway speeds, but not excessive. I think AzTony feels the same as I do, the 4.88's and 37's are almost a match to the stock set up, 4.10's and 31's.
As far as the brand - I have Nitro gears that I bought from MetalTech. I chose them due to the size of my order (sliders and such) and saving 7.75% in sales tax.
As far as the brand - I have Nitro gears that I bought from MetalTech. I chose them due to the size of my order (sliders and such) and saving 7.75% in sales tax.
I agree with 80bajabound, and to add to it you will have a decrease in fuel milage on the highway.
I'm running yukon for a few years and no problems.
I'm running yukon for a few years and no problems.
Not really, check ur math on that one first.
Stock tire size is 31.3" with 4.10 gears, move up to 35's that measure 34.5", an increase of 10%, which would require 4.52 gears to match stock, so 4.56 will do just fine.
Move up to 37's that measure 36.5 like mine do, an increase of 16.6% which would require 4.78 gears, so 4.88's are just a tad lower then stock. It shows with my rig, 37" BFG AT's, 4.88's and my speedo reads about 3% faster then my actual speed measured via GPS
Also, I'm running Yukon gears because that's what my installer uses. I'm happy with them, have had many diffs setup by this guys shop, the oldest has been running for 9 or so years with zero issues. The gears usually aren't the problem, unless they're super cheap, it's the install that can really shorten their life if it's not done properly. Make sure an d find a quality shop that has a solid reputation around town, and go with whatever they use normally. Just stay away from Genuine or G2 gears!
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