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Disc brakes 3/4 and 1 ton AD trucks, 70's GM parts #1285319
Mon Oct 29 2018 03:00 PM
Mon Oct 29 2018 03:00 PM
L
loadmaster235  Offline OP
Wrench Fetcher
Joined: Dec 2006
Posts: 30
Athens GA
I am glad to report that I've found a method for adding front disc brakes to my 1949 GMC 1 Ton. I think it will work for the Chevys as well. I used wheels, rotors, calipers, bearings, and brake lines from a 1973 3/4 ton Chevy two wheel drive truck. I tack welded clips on the wheels (available from Jim Carter and others) for the hub caps to fit. Take the bearings to a machine shop and have them turn steel bushings with an inner diameter to fit on the spindle (use old bearing races as guides) and an outer diameter to fit the 1972 bearings). I installed a proportioning valve in the brake system as well. ( That is assuming you have already installed a dual master cylinder). Drives and stops like a dream!




Last edited by Grigg; Mon Oct 29 2018 05:07 PM. Reason: left out "calipers"
Re: Disc brakes 3/4 and 1 ton AD trucks, 70's GM parts [Re: loadmaster235] #1285439
Tue Oct 30 2018 11:58 AM
Tue Oct 30 2018 11:58 AM
W
whateverpratt  Offline
Shop Shark
Joined: Jun 2005
Posts: 116
Deltona, FL
That's a good idea
Do you have any pictures?


'66 c10 rust bucket, 350 nv4500 stock bellhousing, converting to 1 ton suspension
'67 cj5 225 oddfire, need to add overdrive
'48 3804 frame and bed + '52 6400 cab and front clip, need to put them together
Re: Disc brakes 3/4 and 1 ton AD trucks, 70's GM parts [Re: whateverpratt] #1285555
Wed Oct 31 2018 01:49 PM
Wed Oct 31 2018 01:49 PM
L
loadmaster235  Offline OP
Wrench Fetcher
Joined: Dec 2006
Posts: 30
Athens GA
Should have posted pics I know.

I'll try and get a few together and post them.

Re: Disc brakes 3/4 and 1 ton AD trucks, 70's GM parts [Re: loadmaster235] #1285670
Thu Nov 01 2018 10:45 AM
Thu Nov 01 2018 10:45 AM
John Milliman  Offline
Founder/Developer
Joined: Nov 1995
Posts: 4,093
St. Mary's Co., MD
Sounds like good material for a tech tip.

Detail photos and a detailed write up (in .doc or .txt format) would be very nice. Send it to editor@stovebolt.com

Thanks,
John


John

'49 Chevrolet 3804
'70 Boston Whaler Sakonnet w/ '84 Evinrude 90
'85 Ford F-350 "The Farm Dawg"

Re: Disc brakes 3/4 and 1 ton AD trucks, 70's GM parts [Re: loadmaster235] #1285677
Thu Nov 01 2018 12:34 PM
Thu Nov 01 2018 12:34 PM
L
loadmaster235  Offline OP
Wrench Fetcher
Joined: Dec 2006
Posts: 30
Athens GA
John,

Thanks!

I really should have taken more pics, but was rushed in the final stages of getting this truck ready for my daughter's wedding. She's 21.When she was 16/17, she was right there with me sanding paint, helping put in the window glass...and getting dirty and greasy. When she got married, she wanted to depart the reception in the truck. We literally finished the conversion about two hours before the rehearsal dinner the day before the wedding. All worked out, but I didn't accurately document the process in pics. It shouldn't be much trouble to remove the rotor and caliper to get good pics of the existing spindle with the "shims" in place.

Over the next few weeks, I'll try to rebuild the process with part numbers, pics etc and will place it in the new tread you created for me. Thanks for all you do!

Re: Disc brakes 3/4 and 1 ton AD trucks, 70's GM parts [Re: loadmaster235] #1292748
Sat Dec 29 2018 10:22 PM
Sat Dec 29 2018 10:22 PM
F
Frank50  Offline
Shop Shark
Joined: Nov 2000
Posts: 1,589
USA
Did you fabricate caliper brackets?

Re: Disc brakes 3/4 and 1 ton AD trucks, 70's GM parts [Re: loadmaster235] #1298064
Fri Feb 08 2019 06:28 PM
Fri Feb 08 2019 06:28 PM
A
aggie jon  Offline
Shop Shark
Joined: Nov 2008
Posts: 539
Temple Texas USA
I like this idea. I'm trying to stick with originality on mine, but man as crazy as people drive these days, it would be nice to be able to stop on a dime!

Re: Disc brakes 3/4 and 1 ton AD trucks, 70's GM parts [Re: Frank50] #1298219
Sat Feb 09 2019 07:21 PM
Sat Feb 09 2019 07:21 PM
B
bluechev  Offline
Shop Shark
Joined: Mar 2005
Posts: 173
arkansas
Originally Posted by Frank50
Did you fabricate caliper brackets?

Yes the bracket is the biggest obstacle show us what you got.


Robert French MY3800FIRETRUCK
Re: Disc brakes 3/4 and 1 ton AD trucks, 70's GM parts [Re: bluechev] #1298232
Sat Feb 09 2019 08:27 PM
Sat Feb 09 2019 08:27 PM
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Wayne67vert  Offline
Shop Shark
Joined: Sep 2010
Posts: 1,458
Seminole County, FL
Quote

Yes the bracket is the biggest obstacle show us what you got.


I fabbed mine. I started with a plywood mock-up, adjusted it until I had the right shape, size and distance to hold the caliper. I then had a friend it cut out of 3/8th inch steel plate. It cost me $20.


Wayne

When I die, I hope she doesn't sell everything for what I told her I paid for it!

1938 1-Ton Farm Truck
In the Stovebolt Gallery
Photos that I have shared on Stovebolt via PhotoBucket are no longer available. Please contact me if you want a photo from an old post. malmwayne@hotmail.com
Re: Disc brakes 3/4 and 1 ton AD trucks, 70's GM parts [Re: loadmaster235] #1303049
Thu Mar 14 2019 07:49 PM
Thu Mar 14 2019 07:49 PM
B
bluechev  Offline
Shop Shark
Joined: Mar 2005
Posts: 173
arkansas
Originally Posted by loadmaster235


Over the next few weeks, I'll try to rebuild the process with part numbers, pics etc and will place it in the new tread you created for me. Thanks for all you do!



So you got any pics yet?


Robert French MY3800FIRETRUCK

Moderated by  Grigg 

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