![]() |
|
![]() |
#1 |
Registered User
Join Date: Oct 2009
Location: Idaho
Posts: 44
|
Brake conversion help
I changed my '70 from all drum power assist, to disc up front w/ original drums out back. I changed out the prop. valve and using original booster. My question is can I still use the original duel res. master cylinder or do I have to change it out also? Is there a volume problem with the original? Thanks for any help.
__________________
1970 c-10 short/step box morphing into street/strip 1967 RS/SS convertible Camaro 1932 Henry Ford steel 5 window coupe highboy hotrod 1931 full fendered model A sedan AV8 traditional hotrod. 1934 Ford 5 window coupe and a (pile-of-parts) 1929 Model A coupe, plus our "normal" people vehicles. |
![]() |
![]() |
![]() |
#2 |
Redefining LowBudget
Join Date: Mar 2009
Location: lebanon Cow Hampshire
Posts: 4,538
|
Re: Brake conversion help
subscribed I'm going to be doing this swap this winter
__________________
1970 C10 CST fleetside 472 ....big dreams little cash... SunShine Syndicate.. ![]() Mikes Sandwich Fair Run OCT 8th 2011
|
![]() |
![]() |
![]() |
#3 |
Grandpa in the rustmobile...
Join Date: Nov 2008
Location: Spokane WA/Viola TN
Posts: 11,422
|
Re: Brake conversion help
if you had drums 67-70 and went to disc 71-72 you need a 71-72 MC
__________________
John Goose-1968 C10 355,9.32-1CR, Vortec Heads ,262 voodoo, 3.73:1 3OTT (HS ride/beater/farm truck) http://67-72chevytrucks.com/vboard/s...d.php?t=317684 Grams 53-1953 Chevrolet Belair http://67-72chevytrucks.com/vboard/s...=1#post4327784 1969 Chevy C10 Shortbed 4.5/6?" Frame off resto http://67-72chevytrucks.com/vboard/s...d.php?t=548136 1999 Toyota Tacoma 4x4 |
![]() |
![]() |
![]() |
#4 |
Hollister Road Co.
Join Date: Apr 2005
Location: Houston
Posts: 6,134
|
Re: Brake conversion help
The after market MFG's say you can use the original, But some originals have a residual valve in them and would make the front brakes hang. I would go with the 72 master to be sure. They only cost about $18 plus core.
|
![]() |
![]() |
![]() |
#5 |
Registered User
![]() Join Date: Oct 2007
Location: Orem, Ut
Posts: 132
|
Re: Brake conversion help
I made the same change and the MC for Disc/Drum have larger resivors to handle the extra volume needed for the front disc. I would go witht the 71-72 MC.
|
![]() |
![]() |
![]() |
#6 |
Senior Member
![]() Join Date: Sep 2007
Location: Albuquerque NM
Posts: 7,848
|
Re: Brake conversion help
good question. I didnt know about this
__________________
1967custom |
![]() |
![]() |
![]() |
#7 |
Rods
![]() Join Date: Nov 2002
Location: Bryan, TX
Posts: 1,398
|
Re: Brake conversion help
i used my 72 m/c but its still a 50/50
__________________
Just keepin it simple. ![]() 1965 C-10 Ext cab build. 350??(Does it count at 2 truck if I had to cut one up?) 1966 C-10 lwb 283 auto 1970 Suburban in pieces 1971 Blazer 4wd....restore someday. all factory CST 1972 Blazer 4wd parts truck still a roller 1972 GMC Sierra Grandee 1998 Chevy ext driver. 2005 F**D the wife drive...(cant fix women) |
![]() |
![]() |
![]() |
#8 |
Registered User
![]() Join Date: Oct 2007
Location: Orem, Ut
Posts: 132
|
Re: Brake conversion help
|
![]() |
![]() |
![]() |
#9 |
Rods
![]() Join Date: Nov 2002
Location: Bryan, TX
Posts: 1,398
|
Re: Brake conversion help
I wouldnt know. I used it in a 65 chevy.. they have a single port.
__________________
Just keepin it simple. ![]() 1965 C-10 Ext cab build. 350??(Does it count at 2 truck if I had to cut one up?) 1966 C-10 lwb 283 auto 1970 Suburban in pieces 1971 Blazer 4wd....restore someday. all factory CST 1972 Blazer 4wd parts truck still a roller 1972 GMC Sierra Grandee 1998 Chevy ext driver. 2005 F**D the wife drive...(cant fix women) |
![]() |
![]() |
![]() |
#10 |
sharp as a marble
![]() Join Date: Jan 2007
Location: atlantic beach,florida
Posts: 1,082
|
Re: Brake conversion help
I agree with old blue chevy. You need a disc drum master cyl
|
![]() |
![]() |
![]() |
#11 |
Redefining LowBudget
Join Date: Mar 2009
Location: lebanon Cow Hampshire
Posts: 4,538
|
Re: Brake conversion help
nice to see we all agree...it's 50/50?????
__________________
1970 C10 CST fleetside 472 ....big dreams little cash... SunShine Syndicate.. ![]() Mikes Sandwich Fair Run OCT 8th 2011
|
![]() |
![]() |
![]() |
#12 |
Rods
![]() Join Date: Nov 2002
Location: Bryan, TX
Posts: 1,398
|
Re: Brake conversion help
Ha
__________________
Just keepin it simple. ![]() 1965 C-10 Ext cab build. 350??(Does it count at 2 truck if I had to cut one up?) 1966 C-10 lwb 283 auto 1970 Suburban in pieces 1971 Blazer 4wd....restore someday. all factory CST 1972 Blazer 4wd parts truck still a roller 1972 GMC Sierra Grandee 1998 Chevy ext driver. 2005 F**D the wife drive...(cant fix women) |
![]() |
![]() |
![]() |
#13 |
Registered User
Join Date: Oct 2009
Location: Idaho
Posts: 44
|
Re: Brake conversion help
Thanks for the input. It sounds like a volume thing more than anything else, so I'm going to play it safe and install a 71-72 m/c. $14.95 plus core and it's in stock at the local parts house. When it comes to brakes...that's cheap piece of mind, but damn!! that m/c top polished up so purrrdy!!!
![]()
__________________
1970 c-10 short/step box morphing into street/strip 1967 RS/SS convertible Camaro 1932 Henry Ford steel 5 window coupe highboy hotrod 1931 full fendered model A sedan AV8 traditional hotrod. 1934 Ford 5 window coupe and a (pile-of-parts) 1929 Model A coupe, plus our "normal" people vehicles. |
![]() |
![]() |
![]() |
Bookmarks |
|
|