Wanting to put a "Lunch box" locker in 2wd Tundra

[Bryan E.]

Hello,

I've got an old 2003 Tundra. Drives great, and is a good work truck. I've got a 94 80 Series but sometimes I need a truck. Wondered if there is a lunch box locker on the market that fits this rear axle? This truck has the 4.7V8, and automatic. Access cab, TRD model if that makes any difference. I was just thinking that installing a cheap locker would really make a big difference in traction when needed for money spent, could be a fun upgrade.

Thanks. Have been searching but didn't find this question asked or answered.

 

[coloradobound]

Hello,

I've got an old 2003 Tundra. Drives great, and is a good work truck. I've got a 94 80 Series but sometimes I need a truck. Wondered if there is a lunch box locker on the market that fits this rear axle? This truck has the 4.7V8, and automatic. Access cab, TRD model if that makes any difference. I was just thinking that installing a cheap locker would really make a big difference in traction when needed for money spent, could be a fun upgrade.

Thanks. Have been searching but didn't find this question asked or answered.

http://www.ringpinion.com/b2c/Parts...5&Side=Rear&DriveType=4WD&DiffID=240&CatID=36

Thought the 2wd and 4wd rear axles were the same.

 

[Tigerstripe40]

Uses the 8.4" rear end.
See if you can find someone with a TRD sport who is upgrading from the LSD to an ARB.

When my Taco hits 100k, that's EXACTLY what I am doing...

 

[coloradobound]

Uses the 8.4" rear end

That's what I thought. Same as the non-elocked tacomas (98_04). Gives you more options if you maybe look for used.

 

[The Jade Bean]

If I can kinda high jack your thread op, does a lunchbox locker damage your rig? I've heard several times that the lunchbox lockers tend to cause damage, although I don't know what kind of damage. We have an 05 4R SR5 V8 4.7L that is a DD and off road rig and we'd love a locker but would like to not dump $1,500 + in getting an ARB. Thoughts anyone...

-Daniel

 

[Tigerstripe40]

no, a lunch box locker won't damage the rig. but it can help you get into situations where you might do some damage. you do need to drive a locked truck a bit differently. some don't like how the truck handles after a lunch box locker. i have run a lock rite in my 40 for several years. some of them when my 40 was a daily driver in sun, rain, snow and ice. there are driving habits that you have to develop. if you are heavy on the right pedal, a lunch box locker is going to scare you a bit.

 

[The Jade Bean]

^^^ Good to know, thank you!!! I am heavy on the pedal... Maybe I'll just see if we need it after running without one for some time. Save us money anyway.

-Daniel

 

[40Habits]

I would run the stock Toyota e-locker out of the TRD Tacoma's & 4Runners. It only takes some minor mods (grinding, tapping and a little welding) to the axle to fit it in a non locker axle housing. Then you are selectable and use it when you need it.

 

[Tigerstripe40]

I would run the stock Toyota e-locker out of the TRD Tacoma's & 4Runners. It only takes some minor mods (grinding, tapping and a little welding) to the axle to fit it in a non locker axle housing. Then you are selectable and use it when you need it.

The TRD e-locked rear end is an 8" diff. The Tundra uses the 8.4" rear end (the same used in the non-TRD offroad Tacomas) and is completely different. The 8.4" is stronger. There have been some issues of the 8" TRD diff not holding up to supercharged 3.4's and the 4.0 v6 .The v8 might just be too much power -probably why toyota never put that diff in the Tundras to begin with.

Really the only option for a selectable locker for the 8.4" diff is the ARB Air locker. -I am not sure if TJM makes an air locker for that diff, but the ARB has a proven track record and parts are more readily available in the US.

 

[40Habits]

Just to clarify, my response was to Adventure and not to Bryan because it would be a pain in the to install it in a 8.4" housing.

As for strength: The 4.0 has 236 hp and the 4.7 has 245 hp. Not that much difference to shred a rear end. All 4Runners come with either the e-locker or 8" V6 Turbo rear end that includes the V8 4Runners. The reason not to install it in to a 8.4" rear end is not strenght but the install is a .

 

[The Jade Bean]

Since everybody is in to this I have one other question that may help the op too if he has it. Our 4th gen 4R has a center diff lock and frankly I don't really understand it! I used it some on some hill climbs, and then was warned only to use it in water or mud situations... Is this true and if so why? Thanks all!!!

-Daniel

 

[Mr Chuck Norris]

Since everybody is in to this I have one other question that may help the op too if he has it. Our 4th gen 4R has a center diff lock and frankly I don't really understand it! I used it some on some hill climbs, and then was warned only to use it in water or mud situations... Is this true and if so why? Thanks all!!!

-Daniel

My $.02... you can lock the center diff anytime you're off pavement and want more traction. As long as the wheels have some slip you'll be fine.

 

[The Jade Bean]

My $.02... you can lock the center diff anytime you're off pavement and want more traction. As long as the wheels have some slip you'll be fine.

Mr. Norris sir (I love your movies), Is it that when you lock the center diff there's so much power or rigidity that if there's no slip it can just tear things up? Thanks!!

-Daniel

 

[toydude13]

I have an Aussie lunchbox locker in my
'82 truck and don't hate it. I wish I had the money for a selectable locker though.

 

[Dell]

My Lock Right has held up admirably,
during the last 8 years worth of trail work.

But I'm not yer wfo lead foot nut neither.

I wouldn't recommend running 35's with it...
but 33's and a lesser sized tire should hold up just fine.

It is harder on truck components...
but then... so would be any locker.

The Lock Right can cause some scuffing to the tread
of the rear tires...
But driving with a little common sense and care...
should help in minimizing that concern.

IMO...

Installing a Lock Right was one of the best upgrades
I have done...
besides my swap to 4.88 gears.

The only way it might be better...
is if the ARB locker were installed instead.

 

[Sohk2yota]

Aussie is BEEF!!!!!!!

 

[40Habits]

Wondered if there is a lunch box locker on the market that fits this rear axle? Have been searching but didn't find this question asked or answered.

The part # is PTX1615-LR for a Lock Rite on your axle. I don't know if Power Trax offers the No Slip that gives smooth cornering but that would be the way to go.

Our 4th gen 4R has a center diff lock and frankly I don't really understand it!

The center diff lock basically shuts off the VSC which allows you to have wheel spin with out the VSC system hindering you. That is why they say use it in mud because you want the wheels to spin. I use the diff lock every time I take it off road or want to have fun in the snow. Just more control