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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
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on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Aug 2000 Posts: 346 Shop Shark | | Shop Shark Joined: Aug 2000 Posts: 346 |
'38 Chevy 1-1/2 ton
'49 Chevy 1/2 ton
'54 Chevy 6400 2 ton
'55.2 GMC 3/4 ton
'56 GMC 1-ton
No Room Left in Shop
| | | | | Joined: Apr 2000 Posts: 199 'Bolter | | 'Bolter Joined: Apr 2000 Posts: 199 | Interesting I wondered if that couldn't be done the other day. Less wheel rub issue maybe. I wonder what brakes were used. | | | | | Joined: Aug 2000 Posts: 346 Shop Shark | | Shop Shark Joined: Aug 2000 Posts: 346 | Chevy 3/4 ton K series (4x4) front brakes
'71-'86 3/4 ton K series rotors
'71-'78 3/4 ton K series calipers & brake lines
Later calipers went to metric size hose connection.
'38 Chevy 1-1/2 ton
'49 Chevy 1/2 ton
'54 Chevy 6400 2 ton
'55.2 GMC 3/4 ton
'56 GMC 1-ton
No Room Left in Shop
| | | | | Joined: Apr 2014 Posts: 4 New Guy | | New Guy Joined: Apr 2014 Posts: 4 | Where did you get the bolt spacers and rotor spacers? Why did you not just go with larger bolts through the rotor and drill the hub? Is the center ring even necessary? | | | | | Joined: Aug 2000 Posts: 346 Shop Shark | | Shop Shark Joined: Aug 2000 Posts: 346 | A local machine shop made the parts for me.
Larger bolts with larger nuts would interfere with the outer diameter of hub casting just inboard of the brake flange.
The ring keeps the rotor concentric with the hub.
I checked the clearance between the rotor bolts in the original application and the the rotor bolt hole diameter and found it pretty loose. It looked like the factory used the center bore to keep it centered so I just did the same.
'38 Chevy 1-1/2 ton
'49 Chevy 1/2 ton
'54 Chevy 6400 2 ton
'55.2 GMC 3/4 ton
'56 GMC 1-ton
No Room Left in Shop
| | | | | Joined: Apr 2014 Posts: 4 New Guy | | New Guy Joined: Apr 2014 Posts: 4 | What is the thickness of the steel plate? | | | | | Joined: Apr 2014 Posts: 4 New Guy | | New Guy Joined: Apr 2014 Posts: 4 | What size bolts for rotor? | | | | | Joined: Aug 2000 Posts: 346 Shop Shark | | Shop Shark Joined: Aug 2000 Posts: 346 | The plate is 1/2 cold rolled steel. The mounting tab on the bottom is offset 1/2" using a piece of 1/2" square stock welded between the tab and the main plate.
When I had the plate cut, I made the tab 1/2" longer so that it would overlap the main plate. I bolted the main plate to a spindle and the tab where it went and then placed the piece of square stock in between and tack welded it. There are 4 separate beads of weld holding the tab on so I don't think it will go anywhere.
The bolts holding the rotor on are the same thread size as the studs that held the drum on but longer to fit the rotor.
'38 Chevy 1-1/2 ton
'49 Chevy 1/2 ton
'54 Chevy 6400 2 ton
'55.2 GMC 3/4 ton
'56 GMC 1-ton
No Room Left in Shop
| | | | | Joined: Sep 2011 Posts: 131 Shop Shark | | Shop Shark Joined: Sep 2011 Posts: 131 | John, Have you considered selling the unique parts that you have designed. I would be interested in purchasing a "adapter" parts kit. My 55 1 Ton would be a perfect candidate for upgrading.
Thanks in advance. Howie near Calgary
1 1955 Chev one ton. 261 engine
3 1962 Chev c-10 261 engine
4 1966 Plymouth VIP 5.7 GenIII Hemi
5 1966 Imperial Crown Coupe 440 engine
| | | | | Joined: Apr 2014 Posts: 4 New Guy | | New Guy Joined: Apr 2014 Posts: 4 | Do you have any dimsioned drawings for the mounting plates. CAD drawings etc. | | | | | Joined: Dec 2012 Posts: 72 Shop Shark | | Shop Shark Joined: Dec 2012 Posts: 72 | Yep, I'd be interested as well. Looks like a well thought out job, thanks for sharing! | | | | | Joined: Jun 2005 Posts: 1,002 'Bolter | | 'Bolter Joined: Jun 2005 Posts: 1,002 | Starting to work on the '59 now, as Chief has been sitting waiting patiently long enough. Saw this thread about converting the disc brakes. Are there any updates to this that anyone knows about?
Saw somewhere that someone makes a bracket for AD, but don't know about TF.
Thanks for you help.
~ Victor 1941 3/4-Ton Pickup (in process). Read about it in the DITY Gallery1955 Grumman Kurbside "Doughboy" 235/3 on tree w/ OD 1957 3100 - moved on 1959 C4500 Short Bus "Magic Bus" - moved on 1959 G3800 1 Ton Dually "Chief" - moved on 1958 C4400 Viking "Thor" ~ moved on to fellow Bolter | | | | | Joined: Dec 2006 Posts: 321 'Bolter | | 'Bolter Joined: Dec 2006 Posts: 321 | http://www.hollisterroad.com/I think the link above should be a lot of help in your search for a braking system. MikeC
1951 Chevy 3800 1-TonHoward KnappIn the Stovebolt Gallery1948 Chevy 1-Ton (sold Nov 2017)1953 Chevy 1-Ton (sold 10/1/2016) | | | | | Joined: Jun 2005 Posts: 1,002 'Bolter | | 'Bolter Joined: Jun 2005 Posts: 1,002 | Thanks alot MikeC...exactly what I was looking for.
Have you or do you know anyone that has used this kit?
~ Victor 1941 3/4-Ton Pickup (in process). Read about it in the DITY Gallery1955 Grumman Kurbside "Doughboy" 235/3 on tree w/ OD 1957 3100 - moved on 1959 C4500 Short Bus "Magic Bus" - moved on 1959 G3800 1 Ton Dually "Chief" - moved on 1958 C4400 Viking "Thor" ~ moved on to fellow Bolter | | |
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