Originally Posted by mcmlxix (Post 4757138)

The 3/8 bracket with the Dodge rotor only has a few thousandths of interference.....

I havent figured out the rest of the braking system yet. I will probably need an adjustable proportioning valve to tune rear bias. The MC only has two ports so I will need a distribution block or a T block for the front. I'm not sure what would have been used in the 2005 GMC from the facotry. Fisrst step, and the reason for this thread, was to see if I can get the parts mounted to the D60. I hope to see the brackets on Monday and have it machined this week coming up....

Originally Posted by 70custom20 (Post 4767947)

What did the factory caliper brackets for the dodge look like? Any chance that they could have been modified?

Originally Posted by mcmlxix (Post 4768721)

I am using the Dodge calipers... unmodified... check out post #18 for pics.. you can see the MOPAR logo on the caliper....

Originally Posted by 70custom20 (Post 4768798)

Caliper mounting brackets. Could the factory caliper mounting brackets have been used, modified? Just wondering.

Originally Posted by 70custom20 (Post 4771378)

Cool, Rich. It's good to watch the progress your making. Sorry if I'm asking too many questions, but I was wondering how the hydroboost from the 05 GMC was going to work with the redhead steering box you put on the Blazer. The hydroboost I would assume is metric fittings, while the steering box, and maybe the power steering pump are probably standard threads, no?? Thanks again, Kurt
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Originally Posted by mcmlxix (Post 4770347)

Ok. Here is the teaser shot of the brackets, cut out of sheet metal on a waterjet, used to test alignment of components... The sheet metal will be replaced with 3/8" plate (This may change to 5/16" plate to eliminate the need of some machine work) The spacer is 1.5" x .25" DOM and will be TIG welded when complete and ground flush. I may cut them down prior to welding to eliminated the extra step of grinding flush.
http://i70.photobucket.com/albums/i9...9738751785.jpg

Originally Posted by mcmlxix (Post 4785827)

On the rotor side I won't have the 1/4... It’s such a tight tolerance that I will only have a few thousandths between the rotor and brackets. I’m not a welder but the idea was to weld the inside edge 360* where the DOM meets each bracket. I’ll leave the fillet to the fish ….

I flexed my MS Paint photo-chop skills... the RED in the pic below is where it will be welded... the other side is the same but cant be seen at this angle...

http://i70.photobucket.com/albums/i9...T/3413e861.jpg

Originally Posted by Maxxd07 (Post 4808939)

Wow that is some great work!

Originally Posted by mcmlxix (Post 4808999)

Thanks. The waterjet makes it look like I actually know what I'm doing...

Here is a link to the dorman catalog... http://www.dormanproducts.com/catalog/2006_hardware.htm

I'm going to need longer wheel studs... which seems to be more difficult then originally expected. The hole in the hub for the stud is larger then most of the options in 9/16-18 and if you upgrade to 5/8-?, they dont seem to offer a 60* lugnut for aluminum rims... just 90* seat for "other" rims ...

The factory studs are 2.5" and I was looking for 3.75" or greater....

Originally Posted by 68 TT (Post 4809506)

What knurl diameter is in the hub?

Originally Posted by mcmlxix (Post 4810295)

The stock knurl diameter is listed as .65 and I measured all of my studs that came out of the hub with a range of .642 to .648

The 14mm was a thought because my rear (the one I might sell, long story) has the 14mm - 1.5 but none of the dimensions work...

They make a longer stud in 9/16 but its only 3-9/32" and I wanted at least 3-3/4" ... also, the knurl is .677 so I would have to drill... (610-303 dorman)

I did find that Gorilla makes a lug nut for the 5/8 with the correct 60 degree seat so I think I'm going to upgrade to a 5/8 stud.. its knurl is .657 so I probably wont need to drill.... (610-418 dorman)

Originally Posted by mcmlxix (Post 4700895)

Not really.... I got a spare factory bracket two days ago and started to cut and modify. It looks like there are some interference issues. I had exchanged the Dodge rotor for a Chevy rotor because the offset was too deep to use with the factory bracket. I have since picked up another Dodge rotor so I have both to check fitment. I have also ordered a 2009 Dodge 2500/3500 caliper. The Chevy caliper does not fit the Dodge rotor because of overall diameter.... Right now I need some one to waterjet or CNC cut a 3/8" straight bracket...

Here is the factory bracket with one of the ears cut off...

http://i70.photobucket.com/albums/i9...ket_59955_.jpg

Here is the Chevy rotor and caliper bracket ....

http://i70.photobucket.com/albums/i9...ket_59956_.jpg

http://i70.photobucket.com/albums/i9...ket_59957_.jpg

I did pick up a Astro/Safari Hydroboost unit as well as one from a 2005 GMC 3500 truck. I am glad to report that they are interchangable between the two as far as mounting goes. One difference is the Astro has a single keyway where the newer unit has dual keyways. The Astro also has a smaller diameter hole for the master cylinder compared to the GMC 3500. The Astro HB shold support the late 70's Corvette MC for disc/disc brakes. I am using the 05 hydroboost w/ MC and have the Astro/Safari unit in the For Sale section. My goal was to establish if CaptainFab's brackets will work on the newer hydra boost and it does....

Here is a link to the CaptainFab bracket... CLICK HERE


here is a pic of the Astro/Safari hydroboost

http://i70.photobucket.com/albums/i9...ket_59406_.jpg

Originally Posted by plummen (Post 4819561)

if you still need the brackets made ive got a guy about an hour from here that has cnc plasma cutter im taking some parts to next week to have made