chevually said:
I need some help with a rear disc conv for my truck.I have a 80ish K30 dually with 14 bolt FF. I work at a auto parts/ salvage yard co. so I can get rotors and calipers but need help with mounting. TSM says their set-up will not work with dually. Any help? Thanks
Ack. It's kinda rough, as there aren't many, if any, kits for the dually.
The likely rotors will be a later-model truck. I got rotors for a 2003 DRW 3500 Express van, IIRC.
I'm using Caddy calipers, but you could just as easily use the typical K20 fronts.
Mounting, you're on your own. I think the rotors I used are slightly larger diameter than the typical K20 rotors, so I had some wheel fitment issues even on my 16"s (damn deep dually rims

)
I ended up brutally hacking a set of DIY4X's bolt-on disc brackets (sorry Kert!) and welding them onto a set of flanges which I'd moved to convert my SRW axle to DRW. That's my fault 'cuz I didn't start with a dually set up, and I wanted to keep the axle width down so I didn't hafta add bubble fenders.
Oh, that's another thing ... you'll need to determine the bracket mounting location yourself.
Anyway, I would get a set of weld-on brackets, rather than the bolt-ons ... somebody makes them, I believe ... but be wary of the rotor diameter.
All that said, I'd not go back ... my truck stops very well, considering it's a C30 crewcab, and I never have to deal with those gigantic drums again =))
Requisite pix:
brackets:
http://www.slosh.com/ck5/rear-disc-brackets-1.JPG
calipers set up:
http://www.slosh.com/ck5/caddy-calipers-installed-5.JPG
finished:
http://www.slosh.com/ck5/backup-lights-redux-5.JPG
-- A