UMI 304647 Brake Conversion

MechMan

MechMan

Master Mechanic
Sep 13, 2018
260
28
Long Island NY
Has anyone used the UMI 304647 Brake Conversion? I have been trying to google more inforamtion about it but not really finding what I am looking for. IS there any modification that needs to be done for these to fit?
 
Streetbu

Streetbu

Royal Smart Person
Supporting Member
May 22, 2011
1,246
113
Central NY
I'm 99% sure that you need to remove the "ears" from the spindle, then drill and tap two holes for these to bolt on. Really a simple operation.
 
oldsofb

oldsofb

G-Body Guru
Dec 7, 2007
881
93
Maryland
Has anyone used the UMI 304647 Brake Conversion? I have been trying to google more inforamtion about it but not really finding what I am looking for. IS there any modification that needs to be done for these to fit?
Doing the same thing to the 442. Here's the link to where it's at in my thread. https://gbodyforum.com/threads/1987-olds-442-project-build.55577/page-9 No drilling or tapping necessary. The caliper bracket bolts to the two backing plate holes.

Here's a video from my YT channel that covers the spindle and hubs.

Hutch
 
UMI Sales

UMI Sales

Master Mechanic
GBodyForum Sponsor
Oct 11, 2011
461
93
Philipsburg, Pa
Hey guys. The above information is pretty accurate. We are working on a bolt size upgrade from M8 to 3/8-24 which requires common drills and taps, just to stiffen things up a bit.

And yes, you do have to cut the ears off.

This mod uses standard C5 rotors and calipers. Very easy stuff to get.

Any questions hit me on this thread or [email protected] and 814-376-6000

thx
 
Streetbu

Streetbu

Royal Smart Person
Supporting Member
May 22, 2011
1,246
113
Central NY
Thank you, I thought there was some minor fab work and I was correct.
 
MechMan

MechMan

Master Mechanic
Sep 13, 2018
260
28
Long Island NY
Thank you everyone for the insight and information. I am currently just doing research for the project but this definitly looks like the best option I have seen so far.
 
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