lsd or open????

Mavs79 · Dec 6, 2005

Thanks for the info

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. · Dec 6, 2005

Mavs79 said:
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 · Dec 6, 2005

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

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

HemiDak · Dec 6, 2005

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

Mavs79 said:
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 · Dec 7, 2005

Mavs79 said:
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 · Dec 7, 2005

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 · Dec 7, 2005

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 · Dec 7, 2005

YellowKota2k said:
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?

HemiDak · Dec 7, 2005

4point7dak said:
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?

DD = daily driver

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

4point7dak · Dec 7, 2005

YellowKota2k said:
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 · Dec 7, 2005

YellowKota2k said:
: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 · Dec 7, 2005

4point7dak said:
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.

Mavs79 said:
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 · Dec 7, 2005

YellowKota2k said:
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 · Dec 7, 2005

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

4point7dak · Dec 7, 2005

YellowKota2k said:
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 · Dec 8, 2005

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 · Dec 9, 2005

Baby Hemi said:
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:

lsd or open????

Mavs79

T.j.

99durango318

HemiDak

chris4x4

4point7dak

HemiDak

4point7dak

HemiDak

4point7dak

Mavs79

HemiDak

4point7dak

HemiDak

4point7dak

Baby Hemi

4point7dak

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