KS rear disc brake templates and drawings

[hilljob26]

thank you

[ihssalky]

i was able to use these plans and a pair of 1977 deville rotors to make a 5 lug setup. My axle is a 5x5 pattern with a 3.062 center hub. The 6 lug rotor has a 3.100 center so it is loose and you have to still drill pattern. I spoke to hilljob about this. I guess some axles have a different center hub od. Really the only difference in the setup is that you have to turn down the OD of the axle to 6.190. the only other difference is that the rotor od is .500 smaller so the caliper mounting holes move down aprox .250 on the bracket.

[Jdubs71]

Looks good, did you use a plasma? So what your saying is with the six lug set up there is nothing needed, just bolt the plates and calipers and call it good?

[Bierkan]

Originally Posted by Jdubs71

Looks good, did you use a plasma? So what your saying is with the six lug set up there is nothing needed, just bolt the plates and calipers and call it good?

The 5-lug axles are the ones that require drilling if you use the rotors mentioned in the plans. However, this DeVille brake rotor idea may save on drilling. Considering three of the holes look "thin" or intrude on an existing hole, I have found it tough to find a machine shop willing to take on the task. I think the shops around here won't have a problem trimming down the flange on an axle.

[hilljob26]

Originally Posted by Jdubs71

Looks good, did you use a plasma? So what your saying is with the six lug set up there is nothing needed, just bolt the plates and calipers and call it good?

6 lug is basically a bolt on and go..i myself upgraded to 1/2 inch studs , but you dont have to

[hilljob26]

Originally Posted by Bierkan

The 5-lug axles are the ones that require drilling if you use the rotors mentioned in the plans. However, this DeVille brake rotor idea may save on drilling. Considering three of the holes look "thin" or intrude on an existing hole, I have found it tough to find a machine shop willing to take on the task. I think the shops around here won't have a problem trimming down the flange on an axle.

yes, it will help out alot,,although you can also use a grinder and grind around the flange to help out as well...i guess i didnt realize that people would rather a machine shop do all the work rather then just measuring it in there garage and save em some cash, but whatever works i guess

[ihssalky]

We have a plasma burn table. Just put it into computer and burnt it out. The 6 lug would work perfect on that setup or a 5 lug with 3.100 center hub axle diameter. Both rotors are the same backspace so all spacers and brackets in plans work perfect. All it changes is placemrnt of two upper tapped holes. I was going to use 6 lug and drill to match, but my center hub is the same as caddy rotor at 3.062. I did not want .038 slop in center where it keeps it all centered up. Just all depends on what u have.
Posted via Mobile Device

[ffk]

im going to salage yard monday...can u tell me what model & years calipers and rotors ill need..

[70blackfish]

Any pictures of the 6 lug kit installed?
Posted via Mobile Device

[Dale99]

Will these work behind 15" rims, or is up-sizing needed?

[Bierkan]

Originally Posted by hilljob26

yes, it will help out alot,,although you can also use a grinder and grind around the flange to help out as well...i guess i didnt realize that people would rather a machine shop do all the work rather then just measuring it in there garage and save em some cash, but whatever works i guess

If we're talking about 1/8" or greater, then I'd rather make sure it's even and balanced all the way around. Taking a grinder is fine if you plan on just driving to the local car shows or whatever. I plan on taking this truck on the highway and don't want any additional vibrations.

[69RDMo]

Originally Posted by Dale99

Will these work behind 15" rims, or is up-sizing needed?

thats what i was wondering also

[hilljob26]

Originally Posted by 70blackfish

Any pictures of the 6 lug kit installed?
Posted via Mobile Device

the very first post has 6 lug pics

[hilljob26]

Originally Posted by Dale99

Will these work behind 15" rims, or is up-sizing needed?

yes, i had 15x10's on my last 72 and they were just fine

[hilljob26]

Originally Posted by Bierkan

If we're talking about 1/8" or greater, then I'd rather make sure it's even and balanced all the way around. Taking a grinder is fine if you plan on just driving to the local car shows or whatever. I plan on taking this truck on the highway and don't want any additional vibrations.

i totally agree with you,, i was just getting at when i came up with this it was to have a rear disc set up for way cheaper then you could buy a complete kit for.however if its very minor, i would grind it personally, but that is just my personal opinion

[hilljob26]

Originally Posted by ffk

im going to salage yard monday...can u tell me what model & years calipers and rotors ill need..

all of that information is in the plans..should be in the upper right corner

[McKenna]

I'd take a set of 6 bolts if available, let me know
Posted via Mobile Device

[hilljob26]

pm sent

[Dale99]

Got mine in today. Great drafting work coming from a draftsman

[hilljob26]

why thank you

[orange72blazer]

Are these still available? I'll take a 6 lug set of templates if you still have some.

[ChevyCruizer]

I dont fully understand why the parts required are such a big secret in this thread. I understand and support the money for the plans, but I feel the parts list should be posted. As examples CaptFab has at least three dirrerent rear disc setups available. He lists everything and that helps people decide what do go with. As an example one of his sets use F body LT1 calipers and another one uses this thread style calipers. One of his use caprice rotors and I think another is a 4x4 front rotor. This information helps people decide what to go with because maybe they have some of the parts on hand.

Here are some specs on the 5 lug rotor that is pictured above link in post #102.

It is the rear brake rotor for:
Buick Estate Wagon 1977 - 1979
Buick Lesabre 1977 - 1979
Buick Riviera 1977 - 1978
Cadillac Coupe DeVille 1978 - 1979
Cadillac Deville 1977 - 1977
Cadillac Fleetwood 1977 - 1979
Cadillac Sedan DeVille 1978 - 1979
Cadillac Seville 1977 - 1979

Which if you want a parking brake then the rear caliper for this application should also work, but be careful most rebuilt calipers will not have the brackets needed to secure the parking brake cable nor the arm that actually moves the piton in and out.

[hilljob26]

they are not a secret, for those that have asked what parts they will need, i have told them..i hope this helps

[Dano69c10]

Are these still available? Put me down for a six-lug set. I was wondering if you would also the include the five lug info free? Just in case I decide to go five-lug in the future
Dano

[hilljob26]

yes, both 5 lug and 6 lug are included,,pm sent