99+ disc rear end for 67-72 trucks

[bloodybigblock]

Has anyone or do you know of anyone who has a 99+ style disc brake rear end in their 67-72 model truck. I think this would be ideal since they are strong and have disc brakes so no need to a disc brake kit and you can still retain the 6 lug. Anyone have any info on this?

[Clyde65]

I think you will need to check the width
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[bk2life]

yeap, narrow it and itll work.. i have a 99 rear disc set up for my colorado. narrowed total of 18inches..

[bloodybigblock]

width is 66" over my 62" rearend. Not only could that give me disc brakes but it would make my front to rear track widths close to even and not have to run staggered wheels. Any recommendation on how id do the brake lines? Ive never messed or adapted brake lines, but have some knowledge of changing them. Id also order CPP rear mount kit to weld the perches on. Thanks guys

[crazy longhorn]

Try to get all the lines/hoses with the diff, for pattern....My 02 has 3 hoses on the rear(1 ea end, & 1 in the center). One of the outer hoses was a dealer only deal, but the other 2 came from Oreillys. You may have to adapt the fitting (from the rear line to center hose), to get the proper threads. The other thing I found, is the alum calipers (with age) tend to stick. Save a few bucks & purchase "loaded calipers" on the rebuild. best of fun, crazyL

[crazy longhorn]

1 more thought....that 99 has 16" wheels . A 15" wheel will probably not fit over the caliper. Again,best of fun playin crazyL

[bloodybigblock]

do you have this style rear end in your old truck? I guess if all else fails i cant make custom brake lines. Im sure this swap would be cheaper then putting a posi and disc brakes on my stock rear end.

[Clyde65]

Someone here sells a kit to put disc brakes on the 12 bolt, I think it's captn fab. Uses impala or? Calipers
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[crazy longhorn]

Originally Posted by bloodybigblock

do you have this style rear end in your old truck? I guess if all else fails i cant make custom brake lines. Im sure this swap would be cheaper then putting a posi and disc brakes on my stock rear end.

No sir, I have that style rear under my stock 02 silverado? I do know that you are playing with metric fittings tho... too bad you are not closer to my spot in Illinois! I have the calipers(core only), & the lines & hoses & useable rotors.If you were close enough to pick em up, they would be yours for the "takin" (NC). crazyL

[clinebarger]

Truck 10-bolts come with a Eaton Gov-Loc Posi, Or affectionately known as a Gov-Bomb. Not worth installing in your truck Just to have this happen.........

[67 Burb]

Originally Posted by clinebarger

Truck 10-bolts come with a Eaton Gov-Loc Posi, Or affectionately known as a Gov-Bomb. Not worth installing in your truck Just to have this happen.........

OUCH ! ! That diff looks like it needs a few nicks polished out of it.

[crazy longhorn]

That dont look good! I have 1 of those 'gov bombs" in my truck.....I dont crowd it too hard tho (just a daily driver) You can install a True Track, or a clutch style posi in that diff to beef it up . crazyL

[bighaas79]

Thats some tasty looking carnage.

[ProStreet68SB]

The Right Stuff makes a 6lug disc brake conversion. http://www.getdiscbrakes.com/trd4706

[clinebarger]

Originally Posted by crazy longhorn

That dont look good! I have 1 of those 'gov bombs" in my truck.....I dont crowd it too hard tho (just a daily driver) You can install a True Track, or a clutch style posi in that diff to beef it up . crazyL

I didnt know you had that kind of self control


Bloodybigblock.....Disc brakes are not worth the work to install a 10-bolt under your truck.

If you got to have Disc brakes, CaptainFab makes some brackets to do that to your 12-bolt, Add a Yukon Dura-Grip posi & your in business.

71/72 diffs are wider & will solve the width issue, Buy a core rear & build it up a little at a time.

[crazy longhorn]

Originally Posted by clinebarger

I didnt know you had that kind of self control


Bloodybigblock.....Disc brakes are not worth the work to install a 10-bolt under your truck.

If you got to have Disc brakes, CaptainFab makes some brackets to do that to your 12-bolt, Add a Yukon Dura-Grip posi & your in business.

71/72 diffs are wider & will solve the width issue, Buy a core rear & build it up a little at a time.

....no issues with the daily driver, but the toys still take the old man back about 40 yrs? Its he!! , being 18yrs old in this 55 yr old body crazyL

[shortbed70]

Originally Posted by clinebarger

Truck 10-bolts come with a Eaton Gov-Loc Posi, Or affectionately known as a Gov-Bomb. Not worth installing in your truck Just to have this happen.........

Lol looks like your diff has the flu!!!!
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[clinebarger]

Originally Posted by shortbed70

Lol looks like your diff has the flu!!!!
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More like the bubonic plague.

[crazy longhorn]

All jokin aside, I do have to agree with clinebarger....the 12 bolt would be a better build crazyL

[Low Elco]

Cline- you need a stouter cart! That baby's seen better days!

[crazy longhorn]

Originally Posted by Low Elco

Cline- you need a stouter cart! That baby's seen better days!

Naw....that will "buff out" crazyL

[bloodybigblock]

what about a 14 bolt rear from a 90s model 3/4 ton?

[clinebarger]

Originally Posted by bloodybigblock

what about a 14 bolt rear from a 90s model 3/4 ton?

Still Gov-Loc, Not quite as easy to break, A real Posi carrier is quite expensive for a 9.5" 14-bolt.