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Cobra Disc Brake conversion


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All,

 

I am researching the 2004 Cobra front Disc brake upgrade kits for the 71 - 73 mustangs. One reason behind the upgrade, is that I helped my friend install the Cobra front Calipers and 13 in rotors to his 2004 GT Mustang. Wow, it made the 73 mustang front disc brake rotors look very, very small! I have read all of the threads on the forum and wanted feedback from the forum members.

 

Has anybody recently used the either the Mustang Steve adapter kit or used the Vintage Venom kit?

 

mustang7173 :D

Thanks,

mustang7173 🇺🇸

"Courage is being scared to death but saddling up anyway" -- John Wayne

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I used the baer Ironsports 11.65's

 

the parking brake sucks-otherwise it is a fairly clean and simple design and installation. It is said that it will clear some 15" wheels-maybe so, but not any I have found yet.

 

Wheel clearance is a major concern. 13" rotors will require at least a 17" wheel. If you intend to build major power in the future, really big tires don't come in 17" sizes. If you intend to drag race, slick availability in anything besides a 15" wheel is limited.

 

The Mustang Steve parts sure seem nice-and he seems like a good guy too.

I'm not a fan of chasing down parts-but if you are, locate the rotors and calipers before deciding on the kit you are going to use. Also keep an eye on sites like www.newtakeoff.com for some occasionally great deals on parts. I think they have 2005 front brake rotors for 89.00 a pair delivered right now. They used to have complete rear ends brakes and all in multiple gear ratios for about a grand depending on the gear ratio. That was a killer deal.

 

Vintage venom offers you the advantage of getting it all in one place at one time.

 

If you can weld or are willing to have someone who can modify your rear axle housing there are a whole world of additional opportunities.

http://www.7173mustangs.com/gallery/1_01_07_15_8_53_18.png

 

"I love my Hookers!" and "Get some Strange" probably have a different connotation to non automotive enthusiasts!

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Jeff,

 

The baer Ironsports 11.65's is real nice kit. Not too expensive either. The idea behind buying all from one is the appealing part of the Vintage Venom kit. Trying to get decent stuff at a reasonable price is sure tough these days. But, as they say, you get what you pay for.

 

On the http://www.newtakeoff.com website, than you for the link. I will definitely keep my eyeball on this one. I will post updates on which way I will go in this project.

 

Thank You for the response.

 

mustang7173

Thanks,

mustang7173 🇺🇸

"Courage is being scared to death but saddling up anyway" -- John Wayne

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there are a few other new part resellers that get parts from cars that were upgraded ala Saleen-it is worth looking around. Newtakeoff used to have a lot more, I suspect the economy hasn't helped

http://www.7173mustangs.com/gallery/1_01_07_15_8_53_18.png

 

"I love my Hookers!" and "Get some Strange" probably have a different connotation to non automotive enthusiasts!

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All,

 

I am researching the 2004 Cobra front Disc brake upgrade kits for the 71 - 73 mustangs. One reason behind the upgrade, is that I helped my friend install the Cobra front Calipers and 13 in rotors to his 2004 GT Mustang. Wow, it made the 73 mustang front disc brake rotors look very, very small! I have read all of the threads on the forum and wanted feedback from the forum members.

 

Has anybody recently used the either the Mustang Steve adapter kit or used the Vintage Venom kit?

 

mustang7173 :D

I did the street or track cobra conversion on my q code as did Xoliex..

Heres the rears

http://www.streetortrack.com/Cobra-rear-bracket-kit-for-8-or-9-small-big-Torino-bearing-8.8-rear-ends-pr-24456.html

I don't see the front kit on his site anymore but I did buy his kit from him so you could email him & ask..The one thing you need to watch with the other kits is that the front wheel gets moved out..(changes the track width) The kit Shaun (Street or track) makes retains the factory track width

LOVE OF BEAUTY IS TASTE..THE CREATION OF BEAUTY IS ART

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Hello Q,

 

Was it one of these kits?

 

http://www.streetortrack.com/Brakes-c-103.html

 

mustang7173

 

All,

 

I am researching the 2004 Cobra front Disc brake upgrade kits for the 71 - 73 mustangs. One reason behind the upgrade, is that I helped my friend install the Cobra front Calipers and 13 in rotors to his 2004 GT Mustang. Wow, it made the 73 mustang front disc brake rotors look very, very small! I have read all of the threads on the forum and wanted feedback from the forum members.

 

Has anybody recently used the either the Mustang Steve adapter kit or used the Vintage Venom kit?

 

mustang7173 :D

I did the street or track cobra conversion on my q code as did Xoliex..

Heres the rears

http://www.streetortrack.com/Cobra-rear-bracket-kit-for-8-or-9-small-big-Torino-bearing-8.8-rear-ends-pr-24456.html

I don't see the front kit on his site anymore but I did buy his kit from him so you could email him & ask..The one thing you need to watch with the other kits is that the front wheel gets moved out..(changes the track width) The kit Shaun (Street or track) makes retains the factory track width

Thanks,

mustang7173 🇺🇸

"Courage is being scared to death but saddling up anyway" -- John Wayne

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All,

 

Qcode351mach made a valid point. Now, i got to thinking, if you install the 2004 Cobra Calipers with the 13 in rotors, you will need to install larger wheels. This would include 2004 Bullet type 17 inch wheels that would require at least one inch spacers for clearance.

 

Source: http://www.vintagevenom.com/mustange-disc-brake-conversion-kit-faq.htm#why-is-the-rotor-spacer-used

 

Does the spacer change my front track width?

 

Yes, however not by the amount of the spacer thickness. The deeper offset of the SN95 wheels compared to the original vintage Mustang offset keeps the track width change to a minimum. Your wheel center will only be moved out ½" per side from its stock location. Again, this is required to fit a 17"x8" wheel on the front without hitting the upper control arm, no matter how you go about it.

 

So, Currently, I have the stock 1973 disc brakes with the 1 inch Eibach spacers with the 17 Bullet wheels. By the way, I have them on the rear also to make the track equal. This might be a problem since I have spacer on the back.

 

more research is needed-

 

mustang7173

Thanks,

mustang7173 🇺🇸

"Courage is being scared to death but saddling up anyway" -- John Wayne

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Guest BigPinoyHunk

yes i did do the swap and its works fabulous! if you want details, i am more willing to help via telephone at the moment. some of you know what happened to me and some don't, for the ones that do then you understand.

 

just to be real quick, the swap does including you adding some additional brake tubing or completely rebending your own. don't be scared to bend your own lines because its super easy if you have brake line plyers thats 3/16 and a double flaring tools. those tools are cheap.

 

and yes you have to use 17s literally, but there are ways to use a 15 like i did but i was using a skinny. for the rear you can use a 15 if you limit your backspacing but it'll say you need to run a 16.

 

the brakes are a ton better than aftermarket brakes but they are large.

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Hello Xoliex,

 

Glad to see you moving about-I hope you have a speedy recovery. So, I went back to yours and Qcode351mach threads to see what was purchased. I see he purchased the full kit and you got the brackets plus the purchases from Rock Auto. There are a lot of kits around. There are a lot threads about the rear disc brake conversion, with a few of the large cobra upgrade. I will send you a PM with number, if you feel like talking.

 

Thank you fro replying per your condition.

 

mustang7173

Thanks,

mustang7173 🇺🇸

"Courage is being scared to death but saddling up anyway" -- John Wayne

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Hello Xoliex,

 

Glad to see you moving about-I hope you have a speedy recovery. So, I went back to yours and Qcode351mach threads to see what was purchased. I see he purchased the full kit and you got the brackets plus the purchases from Rock Auto. There are a lot of kits around. There are a lot threads about the rear disc brake conversion, with a few of the large cobra upgrade. I will send you a PM with number, if you feel like talking.

 

Thank you fro replying per your condition.

 

mustang7173

Actually no, I only bought the brackets & everything else from rock auto ebay..I supplied Xoliex all the part #'s from rock auto..But he can give you all the info..I have no spacers at all on my q-code BUT I'm running 18" staggered wheels don't remember the offsets off the top of my head..When you push the front out 1/2" you need to watch the outside edge of the tire hitting the front fender wheel lip..

LOVE OF BEAUTY IS TASTE..THE CREATION OF BEAUTY IS ART

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Q,

 

Please accept my apologies on the previous thread. I understand which kit was purchased from Vintage Mustang.

 

A thought! Mustang Steve brackets were aluminum and now they are steel.

 

Thanks You!

 

mustang7173

 

Hello Xoliex,

 

Glad to see you moving about-I hope you have a speedy recovery. So, I went back to yours and Qcode351mach threads to see what was purchased. I see he purchased the full kit and you got the brackets plus the purchases from Rock Auto. There are a lot of kits around. There are a lot threads about the rear disc brake conversion, with a few of the large cobra upgrade. I will send you a PM with number, if you feel like talking.

 

Thank you fro replying per your condition.

 

mustang7173

Actually no, I only bought the brackets & everything else from rock auto ebay..I supplied Xoliex all the part #'s from rock auto..But he can give you all the info..

Thanks,

mustang7173 🇺🇸

"Courage is being scared to death but saddling up anyway" -- John Wayne

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All,

 

Pulled the trigger on the Cobra Disc Brake upgrade. I looked at Rock Auto and Summit Racing. Summit Racing offered free ship after $99.00.

 

Summit Racing- Parts Purchased-

 

Cardone 18B4888 - Passenger side front- SVT COBRA - A1 Cardone Remanufacture - $58.97

 

Cardone 18B4889 - Drivers side front- SVT COBRA - A1 Cardone Remanufacture - $58.97

 

EBC Brakes EBC USR7021 Series Sport Rotors - Pair - $ 212.22

 

http://ebcrotors.com/p-224-ebc-ultimax-rotors.aspx

 

The only bad part is having to dish out $ 114.00 Core Charge. The Cobra Calipers are not just sitting around waiting to be picked up!!

 

Next, Which Mount bracket, Mustang Steve's or Vintage Venom!

 

mustang7173 :D

Thanks,

mustang7173 🇺🇸

"Courage is being scared to death but saddling up anyway" -- John Wayne

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All,

 

I Have gone with Mustang Steve's COBRA-FT Front Caliper Mounting kit. Now it is time to process the manual brake drum spindles and hubs.

 

mustang7173

Thanks,

mustang7173 🇺🇸

"Courage is being scared to death but saddling up anyway" -- John Wayne

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Guest BigPinoyHunk

Hello Xoliex,

 

Glad to see you moving about-I hope you have a speedy recovery. So, I went back to yours and Qcode351mach threads to see what was purchased. I see he purchased the full kit and you got the brackets plus the purchases from Rock Auto. There are a lot of kits around. There are a lot threads about the rear disc brake conversion, with a few of the large cobra upgrade. I will send you a PM with number, if you feel like talking.

 

Thank you fro replying per your condition.

 

mustang7173

Actually no, I only bought the brackets & everything else from rock auto ebay..I supplied Xoliex all the part #'s from rock auto..But he can give you all the info..I have no spacers at all on my q-code BUT I'm running 18" staggered wheels don't remember the offsets off the top of my head..When you push the front out 1/2" you need to watch the outside edge of the tire hitting the front fender wheel lip..

 

only difference between his and i's kit is he used the OEM drum brake spindles and i'm using OEM disc brake spindles. i think the drum brake spindles uses a disc brake bracket that is UNALTERED from the factory. the disc brake brake bracket is slightly modified and already bolted to the new special made bracket.

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I did the same Cobra brake upgrade on my '89 5.0, but it required new spindles. I used Hawk HPS pads and 17" wheels all around. It does work very well and it stops very confidently now.

 

I've been looking for big brake upgrades for my '71, but mine is originally a disc brake car and most systems are designed based off of the drum brake spindles. I'd love to see a solid upgrade for the disc equipped cars. I've got a new set of 17" wheels for the '71 now.

1971 Mustang fastback: 10.3:1 C90E 408W hydroller - CDAN4 EEC-V w/EDIS8, girdled, lowered and caged

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  • 2 weeks later...

How about the spindles offered by Total Control?

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All,

 

My 1973 Coupe has the original disc brakes spindles. I found a set of 1970 mustang spindles along with the hubs. I have purchased the Mustang Steve kit, 1994-2004 COBRA 13" Disc Brake Conversion for Classic Drum Spindles or MII Spindles,

 

http://www.mustangsteve.com/cobrabrakes.html

 

The brackets are made of major steel.

 

One problem I am currently having is locating the 2003-2004 Cobra PBR Calipers. I am looking for the Cardone A-1 Remans. to help keep costs down. I have found several used sets on E-bay for $399.99. Folks, they are getting scare.

 

Found these http://www.latemodelrestoration.com/products/94-04-Mustang-Brake-Calipers for $449.00

 

and

 

found these http://discbrakesrus.com/make/ford/cobra.htm plain for $ 389.99. They state that they are new.

 

The Cardone A-1 Reman PBR calipers are on back order until they receive cores.

 

mustang7173

Thanks,

mustang7173 🇺🇸

"Courage is being scared to death but saddling up anyway" -- John Wayne

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How about the spindles offered by Total Control?

 

I didn't see any spindles on their website for '71-73, but I do see a 13" performance brake kit that is designed to work with stock disk brake spindles. It's ideal, but the cost is still pretty prohibitive at around $1500. Also, I've never heard great things about long term street durability of the Wilwood calipers. What I'd like to see is a retrofit for the OEM disk brake spindle using late model Cobra/PBR calipers.

 

Another option for OE disc brake spindles is the Street or Track setup... it's quite nice as well, albeit a bit overkill for street prowling machines.

1971 Mustang fastback: 10.3:1 C90E 408W hydroller - CDAN4 EEC-V w/EDIS8, girdled, lowered and caged

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Mesozoic,

 

I agree with you on the retro kit for the 71-73 disc brake spindles. Take a look at this SSBC caliper setup for the disc brake spindle. $436.37 with free shipping.

 

http://www.summitracing.com/parts/ssb-a213/overview/year/1973/make/ford/model/mustang

 

mustang7173

Thanks,

mustang7173 🇺🇸

"Courage is being scared to death but saddling up anyway" -- John Wayne

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Mesozoic,

 

I agree with you on the retro kit for the 71-73 disc brake spindles. Take a look at this SSBC caliper setup for the disc brake spindle. $436.37 with free shipping.

 

http://www.summitracing.com/parts/ssb-a213/overview/year/1973/make/ford/model/mustang

 

mustang7173

 

Wow, I'm gonna have to investigate that a bit further. Forgot all about SSBC! While I certainly wouldn't mind having race spec safety wired rotors on my car, the fact is that I don't race my car... and don't intend to. It's more of a canyon carver/highway cruiser/local cruise spot car. Good find.

 

EDIT: I checked it out on their website and it appears that it's a caliper only upgrade, so it retains the stock 11" rotor. I'd love to see a caliper and 13" rotor upgrade kit for our cars without having to go to a drum spindle.

1971 Mustang fastback: 10.3:1 C90E 408W hydroller - CDAN4 EEC-V w/EDIS8, girdled, lowered and caged

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Street or Track sells a kit that lets you keep the disc spindle and go to the 13" Cobra brakes

'72 Mustang , well, its black???

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All,

 

I have processed the 1970 spindles and hubs by sandblasting them and spraying them with Eastwood’s Brake Gray - Brake Fluid Resistant Paint to provide rust, corrosion and brake fluid protection. It is some tough stuff here.

 

http://www.eastwood.com/ew-brake-gray-aerosol-13-oz.html

 

Picture of Sand Blasted Drum Spindles

 

swa54m.jpg

 

So, I cancelled my Cardone A-1 2004 Cobra Caliper order due to next month estimated delivery. I found a pair on the Autoplicity’s website and ordered them.

 

https://autoplicity.com/

 

Cardone A-1 18B4888 and 18B4889 These part numbers include the mounting brackets. Some re-manufactured calipers are just the calipers themselves.

 

I called a friend of mine who works at a Ford Dealer to get the 2004 Cobra Caliper part numbers.

 

RH: 3R3Z-2B120-AB

LH: 3R3Z-2B121-BA

 

Got these for the S.S. Brake lines mount to frame. I have a set of Drum brake hose brackets. I will need to determine the best fit.

 

BRAKE HOSE BRACKETS FROM FORD WITH ANTI ROTATION HOLE AND FOR FRONT OR REAR

 

http://discbrakesrus.com/make/ford/brakelines.htm

 

Source: discbrakesrus

 

30blkx2.jpg

 

Here are some Cobra front and rear caliper information.

 

 

'93 Cobra R: 13x1.1" vented rotors, PBR dual piston 38mm unit from Corvette (interchangeable with Cobra and Bullitt calipers). 10.5" rear vented disc.

 

'94-95 V6 & GT: 10.8x1.0" front rotors, 66mm single piston calipers. Rear single piston 38mm Varga caliper, 10" solid rotor

 

'94-98 Cobra, '95 Cobra R: 13.0x1.1" front rotors, 38x38mm dual piston PBR calipers. Rear single piston 38mm Varga Caliper, 11.65" vented rotor

 

'99+ V6 & GT: 10.8x1.0" front rotors, 45x45mm dual piston PBR calipers. Rear single piston Varga caliper, 10" solid rotor

 

'99-04 Cobra: 13.0x1.1" Brembo rotors, spec'd 40x40 mm dual piston PBR calipers. Rear single piston 38mm Varga Caliper, 11.65" vented rotor

 

'00 Bullitt Mustang/Mach1 : Same brakes as 94-98 Cobras (unique red PBR calipers with running horse up front, same varga caliper in rear painted red.) Rear single piston 38mm Varga Caliper, 11.65" vented rotor

 

'00 Cobra R: 13.0x1.1" Brembo rotors, Brembo 4 piston calipers. 36/40mm pistons. Rear disc the same as the stock '99+ Cobras

 

As you can see, the 99 to 04 Cobra's had the 40mm pistons.

 

To make room for the 17 inch Bullet wheels, I have adopted the Eibach wheel spacers for the front and rear wheels.

 

Eibach Pro Spacer Kits 904250103

 

m3fw2.jpg

 

Source:

 

http://www.summitracing.com/parts/eib-904250103?seid=srese1&gclid=CJu114Tk7L4CFcyhOgod43YArg

 

I am not real crazy about these spacers, even though, they get good reviews. So, I found another alternative.

 

http://www.mustangwheelspacers.com/

 

http://www.mustangwheelspacers.com/theworks1.aspx

 

Source: Mustang Wheel Spacers

 

sgq32o.jpg

 

This kit will require the longer studs. The good aspect of this kit is the spacers slides onto the wheel studs and will not come off until you remove the lug nuts.

 

Well, that is all for now.

 

mustang7173 :D

Thanks,

mustang7173 🇺🇸

"Courage is being scared to death but saddling up anyway" -- John Wayne

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Street or Track sells a kit that lets you keep the disc spindle and go to the 13" Cobra brakes

 

I don't see this kit on their website... can you post a link, please?

 

I've ordered a complete set of rear Cobra brakes for my car from Vintage Venom. The cost from them comes in quite a bit lower than the other options and their kit includes rotors, lines, calipers, mounts, etc. at $550. According to Vintage Venom, the brake kit does not alter the wheel offset spacing, which is good for me.

 

I might just keep the OEM disc brakes up front since they work very well for the driving I'm doing... I wouldn't mind having a bit more bite up front and may upgrade later, but for now at least the rears have some additional capability.

 

Does anyone know what best to do about proportioning bias when adding rear disc brakes? I have the stock style M/C right now...

1971 Mustang fastback: 10.3:1 C90E 408W hydroller - CDAN4 EEC-V w/EDIS8, girdled, lowered and caged

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Mesozoic,

 

Look at the kit for the 94 - 04 Mustang kit. The 94 - 04 Mustang has the same wheel bolt pattern as our 197-1973 mustangs.

 

http://www.mustangwheelspacers.com/theworks1.aspx

 

Comparison chart for wheel bolt patterns-

 

http://www.boltpatternguide.com/Ford_Bolt_Patterns.htm

 

Thank You,

 

mustang7173


All,

 

Got an email from discbrakesrus.com stating the brake hose bracket is no long available from Ford.

 

BRAKE HOSE BRACKETS FROM FORD WITH ANTI ROTATION HOLE AND FOR FRONT OR REAR

 

http://discbrakesrus.com/make/ford/brakelines.htm

 

Source: discbrakesrus

 

30blkx2.jpg

 

 

Dag Nab it!

 

mustang7173 :(

Thanks,

mustang7173 🇺🇸

"Courage is being scared to death but saddling up anyway" -- John Wayne

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I don't see this kit on their website... can you post a link, please?

 

 

 

http://www.streetortrack.com/Street-or-Track-13x1.25-Rotor-4-Piston-Forged-Aluminum-Caliper-Brake-System-pr-24556.html

 

here's the bracket, but its not with the PBR caliper, but i know for sure that they make them, or used to..

 

i would contact them,..

 

Shaun will definantly get back with you.

their great guys to deal with..

'72 Mustang , well, its black???

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