#1  
Old 03-24-2020, 01:46 PM
Old Goat Racer's Avatar
Old Goat Racer Old Goat Racer is offline
Ultimate Warrior
 
Join Date: Nov 2004
Location: Southern ILLINOIS
Posts: 3,408
Default 69 disc brakes

I know a guy who wants to put front disc brakes on his 69 Cat.
What are his options ?

__________________

3 Generations of "Beach Boys Racing" !

Everybody knows somthin.
Nobody knows everything !


1st time on a dragstrip, 1964. Flagstart !

"Thanks for the entertainment."

"Real Indians Don't Wear Bowties"
  #2  
Old 03-24-2020, 01:59 PM
'ol Pinion head 'ol Pinion head is offline
Ultimate Warrior
 
Join Date: Apr 2000
Location: INJUN Territory, Red State Merica!
Posts: 9,564
Default

Single piston caliper late '68 -70 Pontiac B series disc spindles/calipers/rotors are out there, not sure what the availability of new rotors is for them today.

__________________
Buzzards gotta eat... same as worms.
  #3  
Old 03-24-2020, 03:25 PM
rustyrelic rustyrelic is offline
Senior Chief
 
Join Date: Dec 2005
Posts: 449
Default

Yup, 69 -70 front spindles. And yes, I think it will hard and expensive to find rotors. Believe Scarebird has a kit?

  #4  
Old 03-24-2020, 03:26 PM
rustyrelic rustyrelic is offline
Senior Chief
 
Join Date: Dec 2005
Posts: 449
Default

Yup, 69 -70 front spindles. And yes, I think it will hard and expensive to find rotors. Master cylinder for the 69-70 disk car. Believe Scarebird has a kit? I think I should have also installed a residual valve as when I finished, it seems like the rear gets too much whoa as compared to the front.

  #5  
Old 03-24-2020, 08:51 PM
Scarebird's Avatar
Scarebird Scarebird is offline
Ultimate Warrior
 
Join Date: Nov 2002
Location: ABQ, USA
Posts: 4,998
Default

sorry -we do not anymore.

They were extremely slow sellers and required different components than the earlier kits.

  #6  
Old 03-24-2020, 09:54 PM
hurryinhoosier62 hurryinhoosier62 is offline
Ultimate Warrior
 
Join Date: May 2006
Location: Floyd Co., IN/SE KY
Posts: 3,930
Default

Check with Master Power. I believe they have a kit that will work. It's pricey($1800) and requires the use of 17" wheels. OE rotors and calipers are still available through RockAuto(Raybestos parts). He might want contact Steve Snyder @ CO Pontiacs, Frank's Pontiac Parts or Steve Barrack(Pontiac Heaven) to see if either of them have a '69 or '70 with the complete system still in place.

__________________
“It takes considerable knowledge just to realize the extent of your own ignorance.”

Dr. Thomas Sowell

Last edited by hurryinhoosier62; 03-24-2020 at 10:03 PM.
  #7  
Old 03-25-2020, 10:51 AM
Ben M.'s Avatar
Ben M. Ben M. is offline
Ultimate Warrior
 
Join Date: Jan 2004
Posts: 2,796
Default

Quote:
Originally Posted by hurryinhoosier62 View Post
OE rotors and calipers are still available through RockAuto(Raybestos parts).
The parts stores all list rotors available, but if you check the part number they give you it's a 4.75 on 5 bolt pattern and not correct for these cars. No one is making the original rotors that fit these cars to my knowledge.

Best thing you can hope for is finding a late '68-70 B body with disc brakes in good shape that is getting parted or junked.

  #8  
Old 03-25-2020, 11:13 AM
mr67gp mr67gp is offline
Senior Chief
 
Join Date: Dec 2004
Location: Pocono Mountains, PA
Posts: 256
Default

CPR sells rotors for the '67/'68 cars. Not cheap!

https://www.ebay.com/itm/1967-1968-P...P/264395338506

__________________
Jim K in PA
1967 GP HT 428
1967 GP convert 428
1957 Chieftain 4D HT
  #9  
Old 03-25-2020, 01:58 PM
hurryinhoosier62 hurryinhoosier62 is offline
Ultimate Warrior
 
Join Date: May 2006
Location: Floyd Co., IN/SE KY
Posts: 3,930
Default

Quote:
Originally Posted by Ben M. View Post
The parts stores all list rotors available, but if you check the part number they give you it's a 4.75 on 5 bolt pattern and not correct for these cars. No one is making the original rotors that fit these cars to my knowledge.

Best thing you can hope for is finding a late '68-70 B body with disc brakes in good shape that is getting parted or junked.
Every source I’ve looked up lists two different wheel lug bolt patterns for ‘67-‘70 “B” bodies: 5 X 5 (like my ‘64 Catalina) and 5 X 120.7mm(5 X 4.75). One more case of measuring before buying.

__________________
“It takes considerable knowledge just to realize the extent of your own ignorance.”

Dr. Thomas Sowell
  #10  
Old 03-25-2020, 04:08 PM
David Brown's Avatar
David Brown David Brown is offline
Chief Ponti-yacker
 
Join Date: Jun 2000
Location: Ft. Pierce, FL, USA
Posts: 983
Send a message via ICQ to David Brown
Default

I am so glad I bought a couple NOS rotors years ago when they were still available and not ridiculously expensive for my 70 Bonneville.

  #11  
Old 03-25-2020, 05:13 PM
Ben M.'s Avatar
Ben M. Ben M. is offline
Ultimate Warrior
 
Join Date: Jan 2004
Posts: 2,796
Default

Quote:
Originally Posted by hurryinhoosier62 View Post
Every source I’ve looked up lists two different wheel lug bolt patterns for ‘67-‘70 “B” bodies: 5 X 5 (like my ‘64 Catalina) and 5 X 120.7mm(5 X 4.75).
While I'm sure you are correct that the sources say that, I have never seen a 1967-1976 B-body with anything other than 5 on 5 bolt pattern. The application listing in many cases lists the wagon version as the 4.75 on 5, which I know should be wrong having owned a half dozen over the years. I did this conversion myself 15 years ago and back then the 4.75 on 5 was NOT listed as a viable source by any of the old books or computers. The bearing sizes between the two are not interchangeable to fit the smaller bolt pattern rotor on the spindle of a big car (I tried both a '70-81 F-body and a '71 A-body).

In 1977+ I know the 4.75" on 5 bolt pattern was the standard and only heavy duty suspension cars got 5" on 5, making finding brakes for them an exercise in fun.

  #12  
Old 03-25-2020, 07:56 PM
hurryinhoosier62 hurryinhoosier62 is offline
Ultimate Warrior
 
Join Date: May 2006
Location: Floyd Co., IN/SE KY
Posts: 3,930
Default

Quote:
Originally Posted by Ben M. View Post
While I'm sure you are correct that the sources say that, I have never seen a 1967-1976 B-body with anything other than 5 on 5 bolt pattern. The application listing in many cases lists the wagon version as the 4.75 on 5, which I know should be wrong having owned a half dozen over the years. I did this conversion myself 15 years ago and back then the 4.75 on 5 was NOT listed as a viable source by any of the old books or computers. The bearing sizes between the two are not interchangeable to fit the smaller bolt pattern rotor on the spindle of a big car (I tried both a '70-81 F-body and a '71 A-body).

In 1977+ I know the 4.75" on 5 bolt pattern was the standard and only heavy duty suspension cars got 5" on 5, making finding brakes for them an exercise in fun.
I had a conversation with Nunzi maybe 15 years ago before disc brake conversion kits became available for the ‘61-‘64 “B” bodies. If I remember correctly Nunz said that to convert a ‘64 to disc brakes you had to use a ‘70 “B” disc brake setup. because it used the 5 X 5 (5 X 127mm these days) bolt pattern. I do remember he was VERY specific about the donor being a ‘70.

__________________
“It takes considerable knowledge just to realize the extent of your own ignorance.”

Dr. Thomas Sowell
  #13  
Old 03-25-2020, 10:20 PM
marxjunk marxjunk is offline
Ultimate Warrior
 
Join Date: Sep 2005
Location: KANSAS CITY KANSAS.....
Posts: 3,851
Default

i dont really think 400 for a pair of rotors is expensive...the ones from CPR

i paid $278 a piece for my CTS-V to put it in perspective

__________________
Mark..

The Goat whisperer

"I spent a lot of my money on booze, crazy women, and fast cars. The rest I just squandered."

  #14  
Old 03-26-2020, 06:50 AM
Hangn69 Hangn69 is offline
Junior Member
 
Join Date: Apr 2008
Posts: 23
Default

Kore3 hubs

  #15  
Old 03-26-2020, 11:38 AM
mr67gp mr67gp is offline
Senior Chief
 
Join Date: Dec 2004
Location: Pocono Mountains, PA
Posts: 256
Default

Quote:
Originally Posted by marxjunk View Post
i dont really think 400 for a pair of rotors is expensive...the ones from CPR

i paid $278 a piece for my CTS-V to put it in perspective
I actually agree! Compared to the cheap $50 chinesium rotors on ebay, I would gladly pay for NOS rotors. Luckily I also stockpiled a bunch years ago when I found a stash for sale from a closed parts house in NE PA.

__________________
Jim K in PA
1967 GP HT 428
1967 GP convert 428
1957 Chieftain 4D HT
  #16  
Old 04-04-2020, 06:56 PM
Bill Eveland's Avatar
Bill Eveland Bill Eveland is offline
Ultimate Warrior
 
Join Date: Apr 2004
Location: Glasford Il
Posts: 3,650
Default

Buy my 70 bonneville lol.or maybe will be parting it out sometime. Has 3.23 posi and 455 ho in it

__________________
Illinois Outlaw Gassers

6.27@107
9.97@131
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 07:17 AM.

 

About Us

The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.

 




Copyright © 2017