lock or limited slip differential?

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Beretta1234567
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lock or limited slip differential?

Postby Beretta1234567 » Wed Feb 18, 2015 12:27 pm

whats better?
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Re: lock or limited slip differential?

Postby Asylum » Wed Feb 18, 2015 12:41 pm

You can buy a Limited Slip unit from Engineered Performance www.engineered.net.

They work perfectly. Had one in my 3t40 attached to the 3500.

Never gave me any grief at all.


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Re: lock or limited slip differential?

Postby 3X00-Modified » Wed Feb 18, 2015 12:53 pm

From one of the few that have tried it, Dave over on 60* said to NEVER weld the diff or lock it on a FWD car unless you NEVER want to drive it on the street, it's a death trap if you do.

As Eric said, contact Jeff at Engineered Performance, He's currently building my 4t60e HD diff for my new setup. Yes it has two blocks in the center of the diff with springs but the thrust washers behind the spider gears are swapped out for bronze bushings so there is no metal to metal wear, they act as a buffer as well as provide some friction to help aid in 2 wheel grip, it's a well engineered setup and the only option for the 3t40 and 4t60e, and hell even the 5-speed guys that I know of.



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Re: lock or limited slip differential?

Postby 1988GTU » Wed Feb 18, 2015 1:07 pm

At the price of a LSD and the potential power you might make, I would think of going with a 4 speed "E" trans or 5 speed. Might cost a little upfront, but the headaches and constant troubles you could face might be far more expensive.

A side from that, the springs with plates LSD worked ok. Had some lazy burnouts here and there, but overall it was better over the open diff.


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Re: lock or limited slip differential?

Postby Beretta1234567 » Thu Feb 19, 2015 10:50 am

I have been looking at this:
http://www.tractionconcepts.com/Chevrol ... ch8304.htm

Do you think the price is justified or is that to much to pay?
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Re: lock or limited slip differential?

Postby Asylum » Thu Feb 19, 2015 11:03 am

Last I checked the EP unit was about $500.

Worth every penny if you are serious!!


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Re: lock or limited slip differential?

Postby 3X00-Modified » Thu Feb 19, 2015 11:47 am

That piece you posted is JUST blocks and springs... No clutches behind the spider gears so if you use that... happy gauling and you'll eventually weld the spider to the carrier and destroy it. I've seen some destruction photos of what that type will do to a diff... so I'd steer clear of them.



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Re: lock or limited slip differential?

Postby Beretta1234567 » Fri Feb 20, 2015 9:33 pm

I didn't realize that. Good thing I asked before just buying something. I thought it was an actual LSD that was for sale.
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Re: lock or limited slip differential?

Postby Asylum » Fri Feb 20, 2015 9:44 pm

You really can't go wrong with the EP unit.

Not cheap, but you get what you pay for as I suggested.

Mine was flawless, didn't even know it was in there til you needed it and it never let me down.

The 3500 left straight every run and 1.87 60' times can attest to the fact the darn thing worked.

(I should be getting a fee from Jeff, LOL)


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Re: lock or limited slip differential?

Postby Alxsmt » Sun May 10, 2015 12:32 pm

EP is the way to go for sure. I loved mine. I also had the teamGreen setup that is metal on metal.. its worthless, really doesnt do anything.. if you feel like screwing with suspension, removing the front swaybar or putting a smaller one on really helps traction.


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Re: lock or limited slip differential?

Postby weba » Sun May 10, 2015 12:41 pm

I also have teamGreen, if I lift up the car, turning one wheels turns the other one too in the same direction (would be opposite without it) but just a slight touch on the other wheel keeps it from spinning, so I'd say it's a limited grip instead of slip ;) I doubt it's not enough to ever harm the differential.. cause it barely does anything just like Alxsmt said.



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Re: lock or limited slip differential?

Postby Beretta1234567 » Sun May 10, 2015 6:08 pm

When it comes time to rebuild my trans. It looks like I am buying an EP unit for it.
Sounds like my best choice. Thanks all for the feedback.



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Re: lock or limited slip differential?

Postby Alxsmt » Sun May 17, 2015 10:23 pm

Make sure you order a few months in advance I'd you go that route. Usually takes awhile to get


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88 Beretta CL - your average grandma car.. Ls1 swap in progress
77 Celica - needs an engine swap
96 Geo - 1.0L, Cam, 3 angle, cam gear, magnaflow, Koni, H&R
86 Subi - rally car


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