d70 with locker or d80 stock?

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d70 with locker or d80 stock?

Postby mhuppertz » Tue Jan 29, 2008 12:15 am

I ain't made 'o' money, so which would be a better buy, a d70 with locker or d80 stock?
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Postby nooblet » Tue Jan 29, 2008 9:37 am

For what? I have a D70 with a lock-rite in my truck. What do you want to know about it?

Or are you talking about the stock "gov-lock"? Thats just a limited slip, its not an actual locker. The stock limited slip is fine for most things though.

Chris
1990 W250 4X4 / PODs / 366 Spring / BHAF / Lockers / 35" BFG MTs / Getrag / Valair Ceramic / 3.54:1's / Phantom II Boost/Pyro / Muffler Delete

"Speak softly and carry a big stick" --T.Roosevelt
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Postby mhuppertz » Tue Jan 29, 2008 11:02 am

nooblet wrote:For what? I have a D70 with a lock-rite in my truck. What do you want to know about it?
Chris

I'm sick of blowing up d70's. Just wondering if a stock d80 is stronger than a d70 with a detroit locker...
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Postby SChandler » Wed Jan 30, 2008 1:06 pm

The 80 should be stronger everywhere but the carrier. The Detroit Locker is known for being nearly indestructible. Not sure if the 80 carrier has the same reputation or not. It probably depends on what you are blowing up in the 70. Traction will be reduced with the 80 compared to a locked 70.
1992 W250, 300k, Getrag, BHAF, 4" exhaust, DDP fuel pin, Isspro gauges, +3 on the fuel screw, 3200rpm gov. spring, 16cm^2 housing
http://s230.photobucket.com/albums/ee261/dieselsam250/
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Postby nooblet » Wed Jan 30, 2008 1:24 pm

If your blowing up 70's that bad putting a detriot will probably just make you take out the next weakest link. Put a detriot in there, then you'll just start snapping axle shafts etc...

How are you blowing them up so much? a D70 is a pretty damn tough axle.

Chris
1990 W250 4X4 / PODs / 366 Spring / BHAF / Lockers / 35" BFG MTs / Getrag / Valair Ceramic / 3.54:1's / Phantom II Boost/Pyro / Muffler Delete

"Speak softly and carry a big stick" --T.Roosevelt
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Postby KTA » Wed Jan 30, 2008 9:30 pm

YES an 80 is stronger than a 70, you won't twist the pinnion off an 80. :lol:
Fleet of Junk: 1989 D350 627rwhp 1300 tq B-1/Hx60 twins, KTA pump/injectors, ported head, BIG fuel supply. 13.75@ 109.5mph 1/4: 1992 W350 Cab-chasis, 1993 W350 ext cab cust.370 inj Hx40/16cm 290rwhp hydroboost brakes,1984 D350 crew-cab another project.
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Postby mhuppertz » Wed Jan 30, 2008 10:15 pm

nooblet wrote:How are you blowing them up so much? a D70 is a pretty damn tough axle.
Chris

I occasionally bang shift the truck Ronnie Sox style and that seems to be ripping out the spider gears (at least the first carrier) and this weekend I will know for sure on the secong one. I'm 95% sure I have grenaded the spiders again.
I believe that the spider set on the d80 is the same as on the d70, so I might be better off taking my chances with my d70 and a locker this time. Does that sound like a good plan?
mark
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Postby nooblet » Thu Jan 31, 2008 12:20 am

Putting a full detroit will definitely make it stronger. Are you blowing them up while towing? I just can't believe your blowing them up that bad with your setup, thats crazy. I've only ever seen one D70 go boom and it was my buddies W250 during a sled pull.

Good luck, post up whatever you do, I'm interested in seeing what happens!

Chris
1990 W250 4X4 / PODs / 366 Spring / BHAF / Lockers / 35" BFG MTs / Getrag / Valair Ceramic / 3.54:1's / Phantom II Boost/Pyro / Muffler Delete

"Speak softly and carry a big stick" --T.Roosevelt
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Postby flashgordon » Thu Jan 31, 2008 7:02 am

mhuppertz wrote:
nooblet wrote:How are you blowing them up so much? a D70 is a pretty damn tough axle.
Chris

I occasionally bang shift the truck Ronnie Sox style and that seems to be ripping out the spider gears (at least the first carrier) and this weekend I will know for sure on the secong one. I'm 95% sure I have grenaded the spiders again.
I believe that the spider set on the d80 is the same as on the d70, so I might be better off taking my chances with my d70 and a locker this time. Does that sound like a good plan?
mark


Sounds like you need one of them there, newer flywheel(2006 and up) with the springs in them(Duel mass flywheel) That would sure calm the Drive Line Shock :D

O and they are way cheaper then a stock flywheel.

Kinda kidding here and kinda not!!!

The biggest draw back to these flywheel is, YOU CAN'T resurface then
They are a throw a way part!!!!!

Will it fit in to you NV3500???????I don't know. but it would save on a lot of drove line parts.......and still give you one he ll of a KICK (hard not harsh)
If it is some thing that has spiked you interest.......Go to flashgordon Photos on D T R. I have a picture of the back side of the duel mass flywheel!!


Just a thought!!!!! :thumright:


Flash
91.0 non intercooled 3/4 ton 5sd ex.straight piped 16cm housing, timing bumped 1/16...Pump . Full power screw1/2 max with out removing the collar. Gear Vender over drive!
"NOW" with 2nt gen intercooler, turbo and 3"Coolertubz, Buy Tim (TWorline)"
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Postby KTA » Thu Jan 31, 2008 7:17 am

The limited slip d80 is easy to blow spider gears out of too, I did it twice before I put an ARB in and solved that problem. Your other option would be to weld up an open diff Dana 80. I have had really good luck getting the welded up diffs to hold.
Fleet of Junk: 1989 D350 627rwhp 1300 tq B-1/Hx60 twins, KTA pump/injectors, ported head, BIG fuel supply. 13.75@ 109.5mph 1/4: 1992 W350 Cab-chasis, 1993 W350 ext cab cust.370 inj Hx40/16cm 290rwhp hydroboost brakes,1984 D350 crew-cab another project.
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Postby SChandler » Thu Jan 31, 2008 9:12 am

How do those welded diffs do on the street? Or is that a track only deal? Seems to me a locker would be a better idea for the street than a welded diff. KTA, is there a difference strength wise between the Detroit and an ARB when sled pulling?
1992 W250, 300k, Getrag, BHAF, 4" exhaust, DDP fuel pin, Isspro gauges, +3 on the fuel screw, 3200rpm gov. spring, 16cm^2 housing
http://s230.photobucket.com/albums/ee261/dieselsam250/
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Postby KTA » Thu Jan 31, 2008 1:54 pm

The ARB looks stronger than a detroit. I know of some detroits that broke pulling, but don't know of any ARB's that have that weren't the reult of not getting it all the way engaged before applying the power.
Fleet of Junk: 1989 D350 627rwhp 1300 tq B-1/Hx60 twins, KTA pump/injectors, ported head, BIG fuel supply. 13.75@ 109.5mph 1/4: 1992 W350 Cab-chasis, 1993 W350 ext cab cust.370 inj Hx40/16cm 290rwhp hydroboost brakes,1984 D350 crew-cab another project.
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Postby SChandler » Thu Jan 31, 2008 3:42 pm

Sounds like a Dana 80 with an ARB is the way to go for ultimate strength then. Good to know. Thanks.
1992 W250, 300k, Getrag, BHAF, 4" exhaust, DDP fuel pin, Isspro gauges, +3 on the fuel screw, 3200rpm gov. spring, 16cm^2 housing
http://s230.photobucket.com/albums/ee261/dieselsam250/
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fuel screw!!!!
 
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Postby mhuppertz » Thu Jan 31, 2008 8:57 pm

SChandler wrote:Sounds like a Dana 80 with an ARB is the way to go for ultimate strength then. Good to know. Thanks.


I'm not making KTA power, and I don't like driving around with an open rear except when I flip a switch. I would be toasting one tire just trying to get out of a traffic light at more than a crawl. As it is (if I'm in a hurry) I leave two black marks behind me without trying. I have been driving posi's for too long to go back. I love a great power slide steering with engine power!
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Postby mhuppertz » Thu Jan 31, 2008 8:59 pm

Hey KTA, is it for sure 32 spline on a d70 from 1993????
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