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08-27-2010, 02:07 PM
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#1 |
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Truck and auto performance nut
Join Date: Feb 2007
Location: McKinney,Texas
Posts: 3,848
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Converting to front discs? What all is needed?
What all is required for the older trucks to convert....other then the spindle, bearings and seal, dust shield, rotor, and caliper? And of course the right distribution/proportioning valve.
I think I recall that the front upper control arms and ball joints were also required? And the lower control arms and ball joint on the earlier 1/2 ton trucks will work with it? I want to put together a kit for someone out of the perfectly good parts I am removing from my truck.
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Kurt - '68 GMC short step - NIB '09 LY6 6.0L crate motor w/mods, NIB '12 crate 4L85e w/billet 3k stall Circle D, 3.73 posi 12 bolt, DynaTech f-swap headers, 3/4 drop, handling mods, etc. - my toy '72 Chevy LWB C-10 Highlander - 350/350 ps/pb/tilt/ac - not original but close '06 Chevy TrailBlazerSS - LS2/4L70e - little black hot rod SUV - my DD '18 Kia Sorento - wife's econo-driver '95 Chevy S10 - reg cab shortbed, LS, 4.3, auto... my '68's powertrain and chassis build -links broken A surprise phase - carb to efi -links broken Last edited by 68GMCCustom; 08-27-2010 at 02:07 PM. |
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08-27-2010, 05:58 PM
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#2 |
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Msgt USAF Ret
  
Join Date: Jan 2005
Location: Kalamazoo, Michigan
Posts: 8,715
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Re: Converting to front discs? What all is needed?
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VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative. |
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08-27-2010, 06:27 PM
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#3 |
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Truck and auto performance nut
Join Date: Feb 2007
Location: McKinney,Texas
Posts: 3,848
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Re: Converting to front discs? What all is needed?
Thanks Vet but scanned over all 4 pages and that didn't help. I guess I should be more specific.
What is needed from a '72 GM 1/2 ton truck....to upgrade a '67-'70 GM 1/2 ton truck from front drum brakes to front discs? I have everything available (from spindle to dust cap) except the lower control arms but thought that they (67-70 and 71-72) were the same? And...if the crossmember is the same... then the upper control arms and the spindles to dust caps w/calipers should be everything? Other then front brakes hoses?
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Kurt - '68 GMC short step - NIB '09 LY6 6.0L crate motor w/mods, NIB '12 crate 4L85e w/billet 3k stall Circle D, 3.73 posi 12 bolt, DynaTech f-swap headers, 3/4 drop, handling mods, etc. - my toy '72 Chevy LWB C-10 Highlander - 350/350 ps/pb/tilt/ac - not original but close '06 Chevy TrailBlazerSS - LS2/4L70e - little black hot rod SUV - my DD '18 Kia Sorento - wife's econo-driver '95 Chevy S10 - reg cab shortbed, LS, 4.3, auto... my '68's powertrain and chassis build -links broken A surprise phase - carb to efi -links broken |
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08-27-2010, 06:53 PM
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#4 |
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Msgt USAF Ret
Join Date: Jan 2005
Location: Kalamazoo, Michigan
Posts: 8,715
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Re: Converting to front discs? What all is needed?
I think you can just direct swap everything over crossmember to crossmember. You might want to post in the suspension forum for confirmation.
__________________
VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative. |
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08-27-2010, 07:00 PM
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#5 |
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Account Suspended
Join Date: May 2004
Location: Simi Valley, CA
Posts: 1,387
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Re: Converting to front discs? What all is needed?
you need upper and lower 71-72 ball joints, 71-72 disk brake spindle, 71-72 wheel bearings, 71-72 rotors, 71-72 calipers and pads, 71-72 tie rod ends. 71-72 master cylinder, 71-72 proportioning valve, and power brake booster if you want it.
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08-27-2010, 09:24 PM
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#6 |
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Truck and auto performance nut
Join Date: Feb 2007
Location: McKinney,Texas
Posts: 3,848
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Re: Converting to front discs? What all is needed?
OK..thanks! I thought they would need the upper control arms too...but if not even better!
__________________
Kurt - '68 GMC short step - NIB '09 LY6 6.0L crate motor w/mods, NIB '12 crate 4L85e w/billet 3k stall Circle D, 3.73 posi 12 bolt, DynaTech f-swap headers, 3/4 drop, handling mods, etc. - my toy '72 Chevy LWB C-10 Highlander - 350/350 ps/pb/tilt/ac - not original but close '06 Chevy TrailBlazerSS - LS2/4L70e - little black hot rod SUV - my DD '18 Kia Sorento - wife's econo-driver '95 Chevy S10 - reg cab shortbed, LS, 4.3, auto... my '68's powertrain and chassis build -links broken A surprise phase - carb to efi -links broken |
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08-27-2010, 09:58 PM
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#7 |
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67-72 parts collector,…
Join Date: Nov 2002
Location: Mid-MO
Posts: 22,703
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Re: Converting to front discs? What all is needed?
Steering linkage.
The 71-72 centerlink is not reproduced. You will need this to attach to 71-72 inner and outer tie rods. The only other option is to buy a $50 tie rod adapter to make the 71-72 outer tie rods connect to your current steering linkage. Even then,... you will need to use 67-70 outer tie rods in the "inner" tie rod position to gain the correct thread size and direction. Its easier to use all the 71-72 steering linkage, if you have access to it.
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Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 Last edited by lolife99; 08-27-2010 at 09:59 PM. |
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08-28-2010, 05:04 PM
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#8 |
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Registered User
Join Date: Mar 2009
Location: Stockton California
Posts: 42
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Re: Converting to front discs? What all is needed?
Can any one tell me where these came from ? Thanks !
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