D52 Caliper Rear Disc Brake Brackets

[cpetersen]

I believe these are D52 calipers? With these calipers and rotors off of the astro van they will work with 15" Wheels won't they?

[Captainfab]

As N2TRUX posted, the D52 calipers are found on the front of most full sized cars as well as the C10 and C20 trucks from '71-'87. The rotors are front rotors since the Astro vans didn't come with 4 wheel discs. At least that I know of. The application for rotor that I used was 1992-2002 AWD Astro/Safari van

Originally Posted by toms84ss

Couple of questions for you Captain. Are the rotors from the front or rear? And what will we find the GM "D52" calipers on?

Those are the Eldorado D52 calipers with the built in e-brake. Those are the ones you would use if you need an e-brake on this conversion. If you turn those in as cores, make sure you keep the e-brake levers. As far as I know you cannot buy replacements for them. And yes you can use 15" wheels as long as they are disc brake compatable.

Originally Posted by cpetersen

I believe these are D52 calipers? With these calipers and rotors off of the astro van they will work with 15" Wheels won't they?Attachment 576917

[cpetersen]

Originally Posted by Captainfab

As N2TRUX posted, the D52 calipers are found on the front of most full sized cars as well as the C10 and C20 trucks from '71-'87. The rotors are front rotors since the Astro vans didn't come with 4 wheel discs. At least that I know of. The application for rotor that I used was 1992-2002 AWD Astro/Safari van



Those are the Eldorado D52 calipers with the built in e-brake. Those are the ones you would use if you need an e-brake on this conversion. If you turn those in as cores, make sure you keep the e-brake levers. As far as I know you cannot buy replacements for them. And yes you can use 15" wheels as long as they are disc brake compatable.

I paid $50 a piece for those oem 76 caddie calipers, what i can't believe they are getting $40.00 a piece for the the e-brake. Core charge at NAPA is $66.00 for the calipers. $87.00 for the reman calipers.

[csbatey]

do you have to run a proportion valve! thanks

[Captainfab]

Yes, you have to run a proportioning valve of some sort. Some guys run the disc/drum proportioning valve with an adjustable on the rear line. Others run just a disc/disc proportioning valve.

Originally Posted by csbatey

do you have to run a proportion valve! thanks

[joeelutz]

Were there any GM vehicles made that used a D52 style caliper on a rear disc brake with a drum style parking brake inside the rotor?

[Captainfab]

No, none that I know of. By the time GM went to the e-brake shoes inside the rotor, they had gone to a different style of caliper.

Originally Posted by joeelutz

Were there any GM vehicles made that used a D52 style caliper on a rear disc brake with a drum style parking brake inside the rotor?

[68 TT]

Originally Posted by joeelutz

Were there any GM vehicles made that used a D52 style caliper on a rear disc brake with a drum style parking brake inside the rotor?

There is something close that can work with the D52 calipers as well as any other caliper designed for 1.25" thick rotors like the LS1 Camaro & C4/C5 Vette PBR front calipers. The 65-82 Corvette rear rotors are 11.75x1.25 and use a drum brake parking brake inside the rotors. Only down side is they are 5 on 4-3/4" bolt pattern but they can be drilled for a second 5 on 5 pattern to work on our trucks.

They fit with 15" rally wheels and you can get all the e-brake parts made from stainless steel from the Vette restoration places pretty cheap.

You can get the backing plate parts from a JL-8 optioned 4-wheel disc 69 Camaro application that fit up easier to a straight rear axle vs. the Vette parts designed for their IRS but the parts are pretty pricey. I have been tinkering around with some inexpensive ways of using the parking brake parts with a fabricated backing plate for the standard rear axle but haven't had the time to test it out and I don't have all the e-brake parts to make it functional.

NAPA sells the American made Vette rotors for under $40 too.

[shiner2001]

Originally Posted by Captainfab

Those are the Eldorado D52 calipers with the built in e-brake. Those are the ones you would use if you need an e-brake on this conversion. If you turn those in as cores, make sure you keep the e-brake levers. As far as I know you cannot buy replacements for them. And yes you can use 15" wheels as long as they are disc brake compatable.

If I were to buy new calipers from the parts store, does that mean that they will not come with everything needed to run an e-brake? Are there parts that will ultimately have to be found used or in a junkyard? I was planning on not running an e-brake, but it hadn't occurred to me that it was necessary for the state safety inspection, so I'll have to go with the Caddy calipers it looks like. Anyone had an experience with finding the Caddy calipers new with the e-brake setup? I don't actually think that for the safety inspection that they usually even check the e-brake, but I'd rather be safe than sorry and not be able to pass inspection sometime down the road.

[Captainfab]

I haven't bought the Eldorado calipers myself, but I have read that they don't come with the arms for the e-brake. Some guys have made their own using the correct size wrench. If you get a set of the Eldorado calipers and they don't come with the arms, and you can't get the issue solved, let me know and I'll get you taken care of.

BTW, your brackets shipped today. You should see them Saturday or Monday at the latest. Thanks again.

Originally Posted by shiner2001

If I were to buy new calipers from the parts store, does that mean that they will not come with everything needed to run an e-brake? Are there parts that will ultimately have to be found used or in a junkyard? I was planning on not running an e-brake, but it hadn't occurred to me that it was necessary for the state safety inspection, so I'll have to go with the Caddy calipers it looks like. Anyone had an experience with finding the Caddy calipers new with the e-brake setup? I don't actually think that for the safety inspection that they usually even check the e-brake, but I'd rather be safe than sorry and not be able to pass inspection sometime down the road.

[shiner2001]

Originally Posted by Captainfab

I haven't bought the Eldorado calipers myself, but I have read that they don't come with the arms for the e-brake. Some guys have made their own using the correct size wrench. If you get a set of the Eldorado calipers and they don't come with the arms, and you can't get the issue solved, let me know and I'll get you taken care of.

BTW, your brackets shipped today. You should see them Saturday or Monday at the latest. Thanks again.

I got the shipping info today, I appreciate it. As far as the calipers go, I haven't taken a look at any yet in person, so I'm not familiar with them. If anyone has any photos of what they look like in stock form and with a fabbed e-brake set up, that would be awesome. When you say with the correct size wrench, what exactly are you referring to? Sorry for being so in the dark about it all, like I said, I haven't had the calipers in my hands to see for myself yet.

[68 TT]

Originally Posted by shiner2001

I got the shipping info today, I appreciate it. As far as the calipers go, I haven't taken a look at any yet in person, so I'm not familiar with them. If anyone has any photos of what they look like in stock form and with a fabbed e-brake set up, that would be awesome. When you say with the correct size wrench, what exactly are you referring to? Sorry for being so in the dark about it all, like I said, I haven't had the calipers in my hands to see for myself yet.

I have a set of the Eldorado calipers at home. I will dig them out and post some pics of them this weekend.

[shiner2001]

Originally Posted by 68 TT

I have a set of the Eldorado calipers at home. I will dig them out and post some pics of them this weekend.

That would be fantastic! And if you'd care to sell them...I know a guy in Texas that would probably take them off your hands.

[LDO]

Originally Posted by cpetersen

I believe these are D52 calipers? With these calipers and rotors off of the astro van they will work with 15" Wheels won't they?Attachment 576917

anyone have pictures of how the e-brake cables mount to these calipers and what cables to use?