Gain extra benefits by becoming a Supporting Member Click here find out how!
Classic Performance Products Classic Parts
American Auto Wire Classic Industries
Join the Community todayDanchuk Catalog
Hellwig Products IncPerformance Rod & CustomEcklers AutoMotive
Nu-Relics Power Windows
Impala Bob's Bob's Chevy Trucks Bob's Chevelle Parts Bob's Classic Chevy

Ecklers AutoMotive
 Page 3 of 5 « First<2345
Username Post: '60-'66 Disc Brake Conversions        (Topic#187532)
Vaughn 
"15th Year" Gold Supporting Member
Posts: 18770
Vaughn
Loc: Colorado Springs, CO
Reg: 08-08-04
09-26-08 08:58 AM - Post#1529855    
    In response to raycow

If you have a disk/drum combination, you MUST use a dual circuit master cylinder. Why? Because disks and drums operate at dramatically different pressures. The disks operate best at 1000+ psi, the drums operate at 500+ psi - If you use a single circuit, the drums will be at near lockup while the disks will just be at the beginning of their operating range. Some might say that you can do it this way with a single circuit plus using an adjustable pressure regulator to operate the rears, but this is just asking for trouble - because any loss in pressure will result in no brakes at all, in addition to an incorrect balance in brake operating pressure (adjustable pressure regulators have trouble operating the brake system properly unless the front and rear circuits are split).

Use a traditional dual circuit master cylinder - it will bolt right up to the single master cylinder flange (but you have to make sure you have the right MC pushrod), then you can use a traditional combination valve to supply pressure to the drums and to the disks. With this method a loss in pressure will still allow you to stop the vehicle.



 
Ecklers AutoMotive
sixteetwo 
Forum Newbie
Posts: 64

Loc: Sacramento
Reg: 04-29-08
09-26-08 09:45 PM - Post#1530351    
    In response to Vaughn

Thanks everyone yeah I never done a conversion before and only a few brake jobs my problem is I have the hydrualic clutch that uses half of the mc I actually have the dual mc with boost that came with the kit but I was hoping to hold off untill I went with a automatic trans thus eliminating the need for the old mc.Is it possible to use an auxillary resavoir for the clutch



Edited by sixteetwo on 09-26-08 09:46 PM. Reason for edit: No reason given.

 
Vaughn 
"15th Year" Gold Supporting Member
Posts: 18770
Vaughn
Loc: Colorado Springs, CO
Reg: 08-08-04
09-27-08 06:46 PM - Post#1530886    
    In response to sixteetwo

You can install a separate clutch master cylinder and reservoir and hook it up to the clutch pedal. Wilwood carries some different types, and they are not expensive.



 
62 mark 
Contributor
Posts: 108
62 mark
Age: 55
Loc: Tampa, florida
Reg: 08-08-08
10-12-08 04:30 PM - Post#1540509    
    In response to Vaughn

On the subject of the crossmember swap... i have begun this weekend with "the swap" installing the new crossmember from the 71 1/2 ton. (mine is 62) and so far i can tell you i had to drill 3 holes on each side..there are 7 on each side, so i just bolted up the ones that lined up and marked the spots for the new holes. i will keep posting the details for anyone who is interested.

"Drove my Chevy to the levy..."


 
gsxr-freak 
Forum Newbie
Posts: 53

Reg: 10-13-08
10-16-08 11:23 AM - Post#1543547    
    In response to 62 mark

I am very interested. I am looking to do the same cross member swap on my 60, so any info you have would help tons.

Thanks.



 
62 mark 
Contributor
Posts: 108
62 mark
Age: 55
Loc: Tampa, florida
Reg: 08-08-08
10-18-08 05:59 PM - Post#1545066    
    In response to gsxr-freak

i got the a arms and springs in this weekend...now i have come to a stumbling block. the centerlink is too close to the crossmember. actually hits it. i have the 62 steering box, maybe i need the 71? any help would be appreciated

"Drove my Chevy to the levy..."


 
198plus 
Contributor
Posts: 152
198plus
Loc: Loganville, Ga.
Reg: 05-28-08
10-22-08 02:50 PM - Post#1547777    
    In response to billydonn

Another question I've purchased a set of 86 c10 spindles how do I know these I bought are really the correct year ???? The reason I'm asking is the new ones doesn't look like the measurements from top ball joint to bottom ball joint are the same length as the new ones. The new ones are right at 9" and the old ones are around 8"
Thanks for any help with this !!!!!



 
lowslow64 
Contributor
Posts: 171
lowslow64
Age: 59
Loc:
Reg: 05-15-07
11-01-08 10:13 PM - Post#1555111    
    In response to hilandr451

I have a 64 C10, the front end is 5 lug disk brakes with pressed in A frame bushings. I purchased the truck this way, and I am not sure of the year of the frontend. At some point I will need to rebuild the front end and hope to get lowering springs and dropped spindles. The problem I have is, I am not sure what year the front end is? Any ideas on how I could tell? Or does it matter? Marty







 
raycow 
DECEASED
Posts: 27999
raycow
Loc: San Francisco, CA
Reg: 11-26-02
11-02-08 12:43 AM - Post#1555146    
    In response to lowslow64

73 was the first year for pressed in bushings and the front ends are basically the same up to 87.

Ray

Those who choose an automatic transmission want transportation. Those who choose a manual transmission want to drive.


 
sixteetwo 
Forum Newbie
Posts: 64

Loc: Sacramento
Reg: 04-29-08
01-26-09 06:07 PM - Post#1616313    
    In response to raycow

can someone tell me what diameter brake lines to use running disc up front and drum at the rear also I am replacing the old lines if anyone knows of a kit otherwise I will buy straight line and do all the bends



 
Rich 5150 69 
Frequent Contributor
Posts: 1939
Rich 5150 69
Loc: Sac, Calif
Reg: 11-21-04
01-26-09 06:56 PM - Post#1616357    
    In response to sixteetwo

LMC offers a line kits, single or dual master.

`64 Chevy sb, `69 RS/SS, `37 F**d Coupe 406 sm blk
http://photobucket.com/R51506964


 
MadMatt 
Member
Posts: 57
MadMatt
Loc: Puyallup, WA USA
Reg: 05-18-04
02-05-09 09:05 PM - Post#1623536    
    In response to hilandr451

I have a couple of questions on this. First, I have a 66 C-10 and a friend has a 78 3/4 ton suburban. My truck is 6-lug and the Sub is 8 so I'll have to change the rotor, is that all and will that work? Also, will the booster from the Sub bolt in to the 66? Thanks for any help...

61 Impala BT
64 malibu SS convert
66 C-10 Shorty Fleetside


 
sixteetwo 
Forum Newbie
Posts: 64

Loc: Sacramento
Reg: 04-29-08
02-12-09 11:04 PM - Post#1628969    
    In response to Rich 5150 69

Ok I got the inline tube brake line conversion kit... no instructions, my old setup was a single line to all 4 drums from the master. Now in the new setup I have discs up front and drums at rear can someone tell me or better yet draw a diagram with what goes where I mean how is the fluid dispersed through a series of distribution blocks I see there are also 2 seperate lines for front and rear do the fronts have a total seperate line and if so how do they share the brake fluid?



 
Rich 5150 69 
Frequent Contributor
Posts: 1939
Rich 5150 69
Loc: Sac, Calif
Reg: 11-21-04
02-12-09 11:27 PM - Post#1628975    
    In response to sixteetwo

Try here
http://www.mpbrakes.com/technical-support/con figur...

`64 Chevy sb, `69 RS/SS, `37 F**d Coupe 406 sm blk
http://photobucket.com/R51506964


 
sixteetwo 
Forum Newbie
Posts: 64

Loc: Sacramento
Reg: 04-29-08
02-13-09 10:09 AM - Post#1629177    
    In response to Rich 5150 69

Thanks Rich looks like I need a combination valve to distribute fluid evenly and in fact the front and rear are 2 separate lines only joinned at this valve



 
dvalentine 
Senior Member
Posts: 9356

Loc: Sacramento, CA
Reg: 06-22-00
02-13-09 11:42 AM - Post#1629235    
    In response to sixteetwo

If that replacement kit was for a stock truck with the original braking system, it may not work.

The brake hard lines for the front disks are a different size than the stock rear drum brakes !

Val



 
sixteetwo 
Forum Newbie
Posts: 64

Loc: Sacramento
Reg: 04-29-08
02-13-09 12:36 PM - Post#1629265    
    In response to dvalentine

Wish I knew how to post pics here but the kit is for a disc conversion and your right the lines are different sizes



 
HDWRENCH 
Member
Posts: 84
HDWRENCH
Loc: prescott az
Reg: 08-01-06
02-16-09 08:14 AM - Post#1631021    
    In response to oldskol

I am in the same area with my truck. however with it having a hyd clutch, no vacuum due to extremely healthy small block I have to spend a ton of cash and still make parts to get mine right. If any one has used the pwr steering pump version for power brakes would be intrested how that worked out for you. That seems the best for me, then I build a bracket for a wildwood master to run the clutch.

62 chevy
383 stroker
rhs aluminum heads ( heavily re ported)
race demon 750
msd billet dist, 6AL , blaster coil and msd wires
custom flat tappet cam
roller rockers. the normal goodies in a 7200 rpm small block
TKO 600 5 speed trans


 
69 SS396 
Frequent Contributor
Posts: 2473
69 SS396
Age: 59
Loc: Lakeland, Fl
Reg: 11-30-08
02-16-09 08:19 AM - Post#1631028    
    In response to HDWRENCH

The hydra-boost set up is a very good option if you have a lack of vacuum. The only drawback is the stock lines are prone to leaking just like GM oil cooler lines.

The fate of empires depends on the education of youth-Aristotle

Kids will be kids, but parents should be parents.
Sean

http://www.picturetrail.com/myelkyss
1969 El Camino SS396 "Misty Meaner"


 
HDWRENCH 
Member
Posts: 84
HDWRENCH
Loc: prescott az
Reg: 08-01-06
02-16-09 08:20 AM - Post#1631032    
    In response to 69 SS396

Does any one have a year that they came out of from productionc cars?? Thought there may be a cahnce to snag one at a salavge yard.

62 chevy
383 stroker
rhs aluminum heads ( heavily re ported)
race demon 750
msd billet dist, 6AL , blaster coil and msd wires
custom flat tappet cam
roller rockers. the normal goodies in a 7200 rpm small block
TKO 600 5 speed trans


 
69 SS396 
Frequent Contributor
Posts: 2473
69 SS396
Age: 59
Loc: Lakeland, Fl
Reg: 11-30-08
02-16-09 08:40 AM - Post#1631059    
    In response to HDWRENCH

Not sure when they started but are in just about any 3/4 ton or heavier truck, early 90s and later.

The fate of empires depends on the education of youth-Aristotle

Kids will be kids, but parents should be parents.
Sean

http://www.picturetrail.com/myelkyss
1969 El Camino SS396 "Misty Meaner"


 
fritz1990 
Dedicated Enthusiast
Posts: 6514
fritz1990
Age: 57
Loc: Kansas
Reg: 02-16-03
02-16-09 07:46 PM - Post#1631666    
    In response to 69 SS396

Any 5.7 diesel car/pickup from 78 on.

6.2 diesel pickups from '82 on.

Regards, Jeff

1998 K1500 6.5 Coal burner
1965 C10 with 498 BBC AFR Heads
1964 C10 Ran 348W for 6 years, now SBC.

Corvettes owned: '74 '77 '78 L82 Silver Anniversary, 2002 LS1

Don't have a nervous come together!

http://picasaweb.google.com/fritz199090


 
Vaughn 
"15th Year" Gold Supporting Member
Posts: 18770
Vaughn
Loc: Colorado Springs, CO
Reg: 08-08-04
02-19-09 08:17 PM - Post#1634061    
    In response to fritz1990

Hydroboost was also used in front wheel drive Eldorados in the 70s. Later diesel cadillacs used them also.



 
1965C-10 
Very Senior Member
Posts: 7262
1965C-10
Age: 41
Loc: San Tan Valley AZ "Phoeni...
Reg: 11-18-01
02-28-09 07:50 PM - Post#1640904    
    In response to Vaughn

I did'nt see it, but I am ready to put on the 1974 power booster on the 65.

I've read the length of the rod needs to be altered, does it need to be longer now?





 
1965C-10 
Very Senior Member
Posts: 7262
1965C-10
Age: 41
Loc: San Tan Valley AZ "Phoeni...
Reg: 11-18-01
02-28-09 08:13 PM - Post#1640921    
    In response to 1965C-10

Well, I finally found it, the search function had a malfunction for a while.

https://www.chevytalk.org/fusionbb/showtopic.php?ti...




 
1965C-10 
Very Senior Member
Posts: 7262
1965C-10
Age: 41
Loc: San Tan Valley AZ "Phoeni...
Reg: 11-18-01
02-28-09 10:48 PM - Post#1640999    
    In response to 1965C-10

Little issue with the power brake booster touching the steering column bracket.

What needs to be done, try moving the booster up by drilling new holes?







 
pctahlequah 
Contributor
Posts: 556
pctahlequah
Loc: Tahlequah, Oklahoma
Reg: 08-03-08
03-01-09 07:08 AM - Post#1641088    
    In response to 1965C-10

What about cutting off the part of the flange that is hanging over, and then redrilling that bottom mount whole? I haven't got this far yet, but I'd think moving the booster up would change the geometry of the rod and get things in a bind.

************* Preston

'66 Chevy pick-up:Small back glass, A/C cab, LWB 454/TH400/3.08 rear
'68 Impala: SS Fastback 454/700R4/3.08 rear
'07 Suzuki Boulevard C50 805cc




 
Vaughn 
"15th Year" Gold Supporting Member
Posts: 18770
Vaughn
Loc: Colorado Springs, CO
Reg: 08-08-04
03-01-09 05:06 PM - Post#1641459    
    In response to pctahlequah

I cut off the part of the flange that hangs over. 5 bolts are sufficient to hold the booster on. If it bothers you, you can drill a hole slightly farther up and insert a bolt.



 
1965C-10 
Very Senior Member
Posts: 7262
1965C-10
Age: 41
Loc: San Tan Valley AZ "Phoeni...
Reg: 11-18-01
03-02-09 04:14 PM - Post#1642205    
    In response to Vaughn

The 2 holes at the top of the booster bracket are bent out some,

Also in this area the firewall of the truck bends in the other way.

Did you use washers or some sort of spacers to fill in the gap?



Edited by 1965C-10 on 03-02-09 04:17 PM. Reason for edit: No reason given.

 
1965C-10 
Very Senior Member
Posts: 7262
1965C-10
Age: 41
Loc: San Tan Valley AZ "Phoeni...
Reg: 11-18-01
03-03-09 03:43 PM - Post#1642972    
    In response to 1965C-10

I'm looking at the booster Early Classic Enterprises sells for $249.00, but that price seems high for just a brake booster!

I like that it can be unbolted from the brackets, where the 1974 booster is riveted to the bracket.

Does anyone know if this is just a regular GM part I could get from a local parts store?

I'm thinking by the time I cut the 1974 booster flange(it worked back in early 2003 when I pulled it off the 1974 truck) the rubber piece in the middle sure is brittle, it would stink if it is bad from sitting all this time.

At this point, I think it might be worth it to get a new or remanufactured one.





 
Ecklers AutoMotive
 Page 3 of 5 « First<2345
Icon Legend Permissions Topic Options
Report Post

Quote Post

Quick Reply

Print Topic

Email Topic

52111 Views
FusionBB
FusionBB™ Version 2.1
©2003-2006 InteractivePHP, Inc.
Execution time: 0.098 seconds.   Total Queries: 16   Zlib Compression is on.
All times are (GMT -0800) Pacific. Current time is 10:43 AM
Top