lsd or open????

[4point7dak]

a while back right before i was gonna get new tires i went to my buddies house and just boiled my old tires,,, but only the back passenger tire spun. i left one dark black streak all the way down the street-i thought i had an open rear end

then tonight at the dragstrip for the first time i drove into the water and did a burnout. i saw more smoke than usuall, and my dad was back behind the burnout area and he said both tires were spinng and smoke was bellowing equally from both of them. -whats up with that do i really have an lsd??

i sure hope i have a limited slip, because that way i can go buy slicks with out having to wait till after i buy a lsd :mullet:

any helps greatly apperciated :help:

[epmills]

Open diffs will sometimes spin both tires if traction at both tires is about equal. To see if you have a limited slip, jack up the rear endjust enough so both tires are off the ground. Spin one tire, if the other tire spins the same direction you have a limited, if they spin opposite, you have an open. Truck should be in neutral, btw.
-Zach

[fastdak]

Open diffs will sometimes spin both tires if traction at both tires is about equal. To see if you have a limited slip, jack up the rear endjust enough so both tires are off the ground. Spin one tire, if the other tire spins the same direction you have a limited, if they spin opposite, you have an open. Truck should be in neutral, btw.
-Zach

safety warning! do not start the truck. just grab ahold of one of the tires with your hands and spin it.

[jmac2000dge]

I ran into pretty much the same issue. I'll try doing what was said to check er out. Thanks for the help. :biggthump

[DanDB64]

I have an open diff and I can spin em both... Doesnt happen too often though.

[4point7dak]

i havent jacked it up yet but i am towmarrow.

both tires spun in the water

[HemiDak]

Just check your glovebox or axle tag, it's much quicker.

[Ben]

I have 3.92's and an open diff and sometimes I can spin both tires as well. If you have an LSD that is in good shape then both will spin just about ever burn out.

[4point7dak]

I have 3.92's and an open diff and sometimes I can spin both tires as well. If you have an LSD that is in good shape then both will spin just about ever burn out.

im almost certain its lsd, the manual said avoid wot on slippery surfaces with a lsd-because both tires will spin causing the truck to turn sideways.

[T.j.]

Kinda curious on what mine is....checked the glove box and nothing in it about it at all....when the rearend is jacked up and i spin the one wheel the other will spin just as fast but in reverse...anyone?

You have an open diff.

[Kooopsd]

Yea i realized that right after i posted it... i re read the 2nd post then i deleted my post.

[4point7dak]

Yea i realized that right after i posted it... i re read the 2nd post then i deleted my post.

dont worry too much, i was wrong, im in the same boat :( :( :(

[Mavs79]

What is the pros and cons of a LSD and open. I blieve I have an open and I need to check what gears I have.

[T.j.]

What is the pros and cons of a LSD and open. I blieve I have an open and I need to check what gears I have.

Any pros that the open may have are defeated by the fact that they suck...

But seriously..

Open's usually keep inexperienced drivers out of trouble as they tend not to cause the rear to kick out in adverse driving conditions or under heavy footed maneuvers. On the other hand LSD's, if not driven properly or by an experienced driver, will have drivers sideways and back wards in adverse conditions. But Open's are literally the worst thing you can have for off road or racing.

[HemiDak]

TJ's got it right. Here's my personaly quick summary of differentials...

Open - One wheel all the time, two wheels very little.

LSD (or Posi for the GM guys) - Two wheels usually on the street, mostly two wheels offroad, and always one wheel if the other is in the air.

Locker - Fully lockable, making both wheels turn exactly the same under force. Unlocks under decelleration.

Spool - Locked 100% of the time.

For most people, LSD's are great. For others, Lockers are best. I've driven open, LSD, and Lockers in all types of terrain. It's all very dependent on the driver and their skill level or driving.

[sick 660r]

When I make a sharp turn slowly I can hear one tire spinning alittle so im guessing I have a lsd?

[PeteKach]

I have it listed on the tag in the glove box.

Anyone ever notice the back tires screech real easily when turning slowly. Not like a continous screech, but more intermittent. Maybe I'm just stepping on it a bit too much, but I just wondered if this was normal? :drive:

[Mavs79]

What exact parts and cost would it take to move from a 4x4 3.55 open dif to a 4.10 LSD. I do plan on some light 4x4 and I hate the fact the 3.55 has to down shift to keep up to highway speed. I know the 4.10 will help some with this down shift issue but will it also make the truck run at a high RMP when I do the interstate. I have 265/70/R16 tires. Will the 4.10 be a good option?

[HemiDak]

What exact parts and cost would it take to move from a 4x4 3.55 open dif to a 4.10 LSD.

Front and rear ring and pinion gears, and the new LSD carrier.

Figure at least $500 per axle with the gears and install. The LSD can add anywhere from $200 to $400.

Will the 4.10 be a good option?

Yes. For you it would be the best option out there.

[T.j.]

What exact parts and cost would it take to move from a 4x4 3.55 open dif to a 4.10 LSD. I do plan on some light 4x4 and I hate the fact the 3.55 has to down shift to keep up to highway speed. I know the 4.10 will help some with this down shift issue but will it also make the truck run at a high RMP when I do the interstate. I have 265/70/R16 tires. Will the 4.10 be a good option?

Cmon Josh I was sure you were gonna give him the 4.56 speech :jester: :biggthump

Mav go 4.56's and get some bigger meats on that thing. :biggthump

[Mavs79]

I think the 4.10 would be my choice. I still need to drive this thing on the interstate and unlike Iowa we can drive over 70MPH on I-80. :joke: I would love bigger tires except I just got these tires in the summer. Thanks to both of you for the great info. Where should I start to price the parts?

[T.j.]

I think the 4.10 would be my choice. I still need to drive this thing on the interstate and unlike Iowa we can drive over 70MPH on I-80. :joke: I would love bigger tires except I just got these tires in the summer. Thanks to both of you for the great info. Where should I start to price the parts?

70mph on I80 :rofl: You go 70 on 80 and ur toast. :jester: If your going to stay with those tires then yea 4.10's would probably be the best bet. Its just alot of money to do a gear change so going as big as you can seems the best, especially if your thinking of bigger tires in the future.

[99durango318]

safety warning! do not start the truck. just grab ahold of one of the tires with your hands and spin it.


............:brick:

[HemiDak]

:jester: Hey now, I can't recommend 4.56's to everyone.

Where should I start to price the parts?

Talk to these guys.

PORC - 1-866-540-7672

www.PerformanceOffRoadCenter.com

I've gotten my gears, install kits, and Detroit Locker from them. Awesome guys to work with.

[chris4x4]

What exact parts and cost would it take to move from a 4x4 3.55 open dif to a 4.10 LSD. I do plan on some light 4x4 and I hate the fact the 3.55 has to down shift to keep up to highway speed. I know the 4.10 will help some with this down shift issue but will it also make the truck run at a high RMP when I do the interstate. I have 265/70/R16 tires. Will the 4.10 be a good option?
You will be happy with the 4:10's. I have 32" tall tires and my freeway rpms @ 75 mph are about 2200 with the 4:10's. The Trucks moves out MUCH better than when it was stock, and it will pull 5% grades with no down shifting % 75 mph.

[4point7dak]

thats what im doing next, getting an lsd(i think?) and 4.10s(i think?maybe 4.56?)

mine is a 2wd with 3.55's/open though

im going more for drag racing rather than 4wheelin but it is my daily driver, so i dont want anything that will kill gas mileage or be way harder on the truck

i have 275/60/15s,, i was planin on eventually when i got the money getting 17's with the similar sized tire i got now. i heard u have to have a certain height of a wheel/tire or youll run out rpms?(i think thats what i heard)---is this true, would it be bad if i put in 4.10's with that the combination i have now,should i wait till i can get the 17's and do everything at the same time :huh:

my reason for wanting an lsd and 4.10's so bad is because i really wanna run d.o.t slicks at the track-i have an aful horrible time hookin up

-hope all that makes sense
:help: :help: :help: :help:

[HemiDak]

Being a DD and that size tire, definitely go with 4.10's.

The only time you'll "run out" or RPM's is if your gearing is low, and your tires are small. The reduction in your tranny would not be able to keep your RPM's low, so you'd basically be running very high RPM's at lower speeds. This ususally only happens with gears like 4.56's, or very small tires.

[4point7dak]

Being a DD and that size tire, definitely go with 4.10's.

The only time you'll "run out" or RPM's is if your gearing is low, and your tires are small. The reduction in your tranny would not be able to keep your RPM's low, so you'd basically be running very high RPM's at lower speeds. This ususally only happens with gears like 4.56's, or very small tires.

sorry if i sound stupid, but whats DD?

so if i got 4.10s with my present wheel/tire combo would i be gettin like 10 mpg and over revving my engine---do ya think i should wait till i got 17's? :confused:

[HemiDak]

sorry if i sound stupid, but whats DD?

so if i got 4.10s with my present wheel/tire combo would i be gettin like 10 mpg and over revving my engine---do ya think i should wait till i got 17's? :confused:

DD = daily driver

You'd probably be fine with them right now. If anything, you might get better gas mileage.

[4point7dak]

DD = daily driver

You'd probably be fine with them right now. If anything, you might get better gas mileage.
really? :) :) so u think theyd be fine? so now all i need is $$$ i read somewhere u said 500$ an axle. what do u think bout also getting a lsd put in too, how much does that run? i was think'n oem, but then ive heard good things about an auburn. i know your a 4x4 guy but what do u think is the best for racing-an lsd?

P.S:thanks for all your help

[Mavs79]

:jester: Hey now, I can't recommend 4.56's to everyone.
Talk to these guys.
PORC - 1-866-540-7672
www.PerformanceOffRoadCenter.com
I've gotten my gears, install kits, and Detroit Locker from them. Awesome guys to work with.
YellowKota2K - I want to thank you and everyone for the great info. Just think I could spend my money on my wife but now I can put it all in this truck. I think I will get the gears and wait for spring and do the swap. I sent an email to this place and asked exactly what parts I will need for my setup. Just to make sure if I change the gears in the back I also need to change the front in a 4x4 right?

[HemiDak]

really? :) :) so u think theyd be fine? so now all i need is $$$ i read somewhere u said 500$ an axle. what do u think bout also getting a lsd put in too, how much does that run? i was think'n oem, but then ive heard good things about an auburn. i know your a 4x4 guy but what do u think is the best for racing-an lsd?

P.S:thanks for all your help

No problem.

Depending on the LSD, they can range from $200 and up. Figure about $200 for the OEM Trac-lock. If I were you, I'd really look into the Detroit TruTrac. It's a clutchless LSD, which needs no additive and never wears out. It is available for the 8.25 axle, which I'm sure you have. I'm not sure on it's price, though I'm very sure it's worth it for most people over a clutch LSD.

YellowKota2K - I want to thank you and everyone for the great info. Just think I could spend my money on my wife but now I can put it all in this truck. I think I will get the gears and wait for spring and do the swap. I sent an email to this place and asked exactly what parts I will need for my setup. Just to make sure if I change the gears in the back I also need to change the front in a 4x4 right?

Yes, that is correct.

[4point7dak]

No problem.

Depending on the LSD, they can range from $200 and up. Figure about $200 for the OEM Trac-lock. If I were you, I'd really look into the Detroit TruTrac. It's a clutchless LSD, which needs no additive and never wears out. It is available for the 8.25 axle, which I'm sure you have. I'm not sure on it's price, though I'm very sure it's worth it for most people over a clutch LSD..

ok, good to hear--i have the 9.25 axle, is that better or worse than 8.25?

[HemiDak]

It's better, but they're both strong enough for 99% of the Dakotas out there.

[4point7dak]

It's better, but they're both strong enough for 99% of the Dakotas out there.
ok at least theres one good thing about my rear end, btw thanks for all your help :bow:

[Baby Hemi]

I think you will be happy with the 4.10s. Your tires are just a little taller than mine. I run 295x50x16s on mine. The 4.10s seem to be a pretty good compromise since mine is a DD also. I tow and enclosed trailer loaded with motorcycles and gear with no problems, and I also race mine on occasion. I had the 4.56s first and unless you are going to run a taller tire I would not recommend them.

[4point7dak]

I think you will be happy with the 4.10s. Your tires are just a little taller than mine. I run 295x50x16s on mine. The 4.10s seem to be a pretty good compromise since mine is a DD also. I tow and enclosed trailer loaded with motorcycles and gear with no problems, and I also race mine on occasion. I had the 4.56s first and unless you are going to run a taller tire I would not recommend them.
-i wouldnt mind 4.56's but i know the school im going to next year is gonna require about 25mins of hwy driving everyday so i dont want real bad gas mileage. so im gonna go with the 4.10's,,,i am eventually going to get 17's probably, but when i go to the track ill have some 275/50/15 dot slicks (mounted on my old rims)-so the 17's wont be hurtin me at the track. thats my plan :biggthump
now all i need is some more money :banana2: