I am about to jump into the late model vette front brake conversion on my 69, originally a disc brake car. I found on David P's website that there is a difference in the spindle/knuckle assembly between the disc/drum cars that is not big deal. However, I couldn't find any info regarding the hubs. I am not worried about the diameter, because I have to trim the outside to fit into the new rotor anyway, but I am worried about possible offset that would cause interference with the caliper. Has anyone seen a difference between the two that would make this a problem?

Thanks!
Mark

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69 SS, Stroker 489, Tremec TKO, Tight Road Suspension

Ok, I can't get the picture to copy in here....
Go to david's page and click the link for drum to disc brake swap info, scroll about 3/4 down the page and you'll see a side by side comparison.

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Bret Copsey
'68 Camaro base coupe
'92 Caprice wagon
'98 Malibu

[This message has been edited by bretcopsey (edited 03-27-2002).]

[This message has been edited by bretcopsey (edited 03-27-2002).]

The drum spindle's mounting flange is closer inboard.

A disk hub would not work.

Word of warning, if you use the 13" parts be prepared to have .150" machined off the mounting ears and pad.

The drum hubs are easy to find, drum brake novas are common as dirt around here.

I saw that picture too, but the drum hub is from a 67-68, mine is a 69. I am not sure if they are the same, but agree, if they are, it won't work with those hubs: scrap yard time.

I saw the link on David's site for the 13" conversion, and read about the need to trim off the mounting bracket from GM. That should be little problem. What did you mean about having to trim the pads though? Little confused (which is nothing new).

Mark

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69 SS, Stroker 489, Tremec TKO, Tight Road Suspension

By pad, I meant the large boss in the spindle where the top bolt goes into.
If you follow the instructions and have that boss milled down so a straigt edge can lay flat on that boss and a mounting ear (one of the two holes on either side of the spindle) the caliper cage-bracket will not fit between the custom bracket and the rotor.
I did not see enough material to machine off the caliper cage, so I had an additional .150" machined off the ear and the top boss.
The steering arm bolts onto the ears from the back so I did not see a problem taking the material off from there.
I still have to get my brackets cut out of the steel plate, but my plexiglass prototype works perfect, I've added few things to stiffen it up a bit, so my bracket will look different than the ones on David P's site.
Make sure you use cold-rolled plate, all my mechanical engineer friends and family assured me that the stresses that adapter bracket plate will see would not be any match for cold-rolled plate. If you decide to have the spindles machined, make sure you have opposite sides cut down, as the spindles will become side specific.

I'd be really interested in how it all turns out, if you could e-mail me or post results when you get done, I'd be really appreciative.

Thanks again,
Mark

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69 SS, Stroker 489, Tremec TKO, Tight Road Suspension

The drum brake hubs are the same, I have both sets & done a side by side comparision of them & can find no difference. Do you have any pic's of your brake setup?

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1967 RS/SS 396 Camaro