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Old 02-15-2020, 07:18 PM   #1 (permalink)
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WTK: Best Brake Rotor Dana 70 Disc Brake Conversion ¿?

Title says it all.

Want bolt on brackets hopefully but also want a rotor that does not require a huge spacer.

Dana 70 Differential out of a 1985 one ton dually pickup truck.

Well im going with a Dana 60 dually rotors just like I used on my first 14 bolt conversion.

More to come.

Got the rotors from Napa yesterday and they are real stout.
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Old 02-15-2020, 07:25 PM   #2 (permalink)
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If that’s out of a GM pick up (not a cab & chassis) it’s a D70HD, which makes a difference. Try Diy4x.com, they have a kit for the HD axle.
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Old 02-15-2020, 10:07 PM   #3 (permalink)
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Nothing ive ever heard of that is the standard kit that DOESNT use a spacer

And nothing again usings a modern rotor that DOEST requier welding.

If youre going to use the drw wheels you have to use the spacered setup or use 19.5 wheels.

On my 1970 truck i found the hard way using ruffstuff off set drw bracket doesnt clear the inner wheel.
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Old 02-16-2020, 12:18 AM   #4 (permalink)
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Any idea if the backing plate to axle mount bolt pattern on the Dana 70 is the same as on a 14 bolt differential ?

Made my own kit on a 14 bolt can do it on a D70.

Maybe
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Old 02-16-2020, 12:31 AM   #5 (permalink)
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https://www.ruffstuffspecialties.com/catalog/R2050.html

I have that kit on my 70HD, no spacers bolts right up. I'm using DRW hubs. 4" axle tubes are beef, but a pain to buy for

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Old 02-16-2020, 12:40 AM   #6 (permalink)
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Unless I'm misunderstanding the quote from the link.

I need the dually axle with all 4 tires.

Found this setup, may work.
http://vi.raptor.ebaydesc.com/ws/eBa...77&cspheader=1



Quote:
This is for converting to standard single steel wheel minimum 15" with a maximum 4" back spacing

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Originally Posted by Bowtech99 View Post
https://www.ruffstuffspecialties.com/catalog/R2050.html

I have that kit on my 70HD, no spacers bolts right up. I'm using DRW hubs. 4" axle tubes are beef, but a pain to buy for
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Old 02-16-2020, 10:05 AM   #7 (permalink)
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Why don’t you weld a new flange on the tube further out and bolt the bracket directly to it? Easy solution.

Did you look at the Diy4x kit?
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Old 02-16-2020, 10:16 AM   #8 (permalink)
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Might work to weld a flange.

Yes see the quote from the link I'm running dually wheels / tires dont want single wheel / tire setup, it wouldn't have the capacity for the application.


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Why don’t you weld a new flange on the tube further out and bolt the bracket directly to it? Easy solution.

Did you look at the Diy4x kit?
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Old 02-16-2020, 10:28 AM   #9 (permalink)
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Quote:
Originally Posted by ParadiseAutoElectric View Post
Might work to weld a flange.

Yes see the quote from the link I'm running dually wheels / tires dont want single wheel / tire setup, it wouldn't have the capacity for the application.
Is this the kit you looked at?
Dana 70 Dually/14bff Cab and Chassis Disk Conversion
← Previous productNext product →
Dana 70 Dually/14bff Cab and Chassis Disk Conversion
View detailed images (1)

This disc conversion kit works for both the Cab and Chassis 14BFF and for the Dana 70 for dual wheels applications.

Clears most stock 16" bud rims. Some calipers may need slight grinding on the outer edge.

3/8" thick bracket bent and braced. Uses our standard caliper from a 73-87 3/4 ton 4x4 front axle chevy. It's all bolt on and go. We are also including an inside pad spacer pair. This spacer goes between the inside pad and the caliper piston. This gives you back just a little bit of piston stroke.

Kit includes, 1 pair of brackets, full hardware set and 1 pair inside pad spacer and a corresponding rotor part number. Rotors are NOT included in the kit and must be sourced locally.

This kit comes standard with Black Satin powdercoat. Other color options are available, if you would like a different color please call for custom color options.
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Old 02-16-2020, 11:37 AM   #10 (permalink)
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Yeah I think that I misunderstood the axle that you have.
So do you have the standard dually axle or the cab and chassis axle?
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Old 02-16-2020, 11:41 AM   #11 (permalink)
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DANA 70 HD as came out of a C30 GMC CREW CAB DUALLY PICKUP BED TYPE TRUCK.




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Yeah I think that I misunderstood the axle that you have.
So do you have the standard dually axle or the cab and chassis axle?
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Old 02-16-2020, 11:46 AM   #12 (permalink)
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Why not start with a deep (5"+) rotor like found on a 01-02 Dodge D80 DRW, or some of the DRW Savana/Express vans?

EDIT: The D70HD (DRW pickup) and 14BFF (C&C) from square-body GM trucks use the *same* wheel ends (hubs & brakes).
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Old 02-16-2020, 11:52 AM   #13 (permalink)
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Looks like rock auto does not have dimensional data on their website.


Specs ?

Diameter ?

Thickness ?

Offset ?

About to dig out my centric rotor drum spec book.


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Why not start with a deep (5"+) rotor like found on a 01-02 Dodge D80 DRW, or some of the DRW Savana/Express vans?

EDIT: The D70HD (DRW pickup) and 14BFF (C&C) from square-body GM trucks use the wheel ends (hubs & brakes).
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Old 02-16-2020, 11:54 AM   #14 (permalink)
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Quote:
Originally Posted by ParadiseAutoElectric View Post
Specs ?

Diameter ?

Thickness ?

Offset ?
Its all on rockauto... easier to lookup oneself than to try and screenshot and present it here.
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Old 02-16-2020, 12:05 PM   #15 (permalink)
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Translate please.




Quote:
Originally Posted by u2slow View Post

EDIT: The D70HD (DRW pickup) and 14BFF (C&C) from square-body GM trucks use the wheel ends (hubs & brakes).
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Old 02-16-2020, 12:06 PM   #16 (permalink)
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Translate please.
Two different dually diffs... same outers. Got it?
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Old 02-16-2020, 12:10 PM   #17 (permalink)
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Yes


Quote:
Originally Posted by u2slow View Post
Two different dually diffs... same outers. Got it?
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Old 02-20-2020, 07:21 AM   #18 (permalink)
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OK I need a Dana 70 axle spindle end, for mock up purposes.


Anyone ?

Newb ?
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