[Captainfab]

IMO this would be the most cost effective way for you to get 6 lug front disc brakes. It should be a fairly complete list of parts needed. You should be able to use your C20 lower control arms since the '67-'72's mount differently.

Originally Posted by old_1966_GMC

i need help with front suspension. my 66 gmc has 8 lugs drums and im on a really tigth budget i need a simple list of parts to make it a 6 lug.i want to keep my crossmember and control arm other then that i need to find out how to bolt it in. im new to my 66 gmc c1500 3/4 ton first time drum to disc brake swap

real tigth budget i have to grab parts from junk yard piece by piece

Originally Posted by Captainfab

OK I finally got around to compiling this.
Here is a list of parts and part numbers for converting to 6 lug disc brakes using factory parts. There will likely be updates later to the applications and years, as this here is just what I can confirm at this time.

You will need the following parts from a '88-'98 C1500 or 7200#GVW C2500 pickup or Suburban, or from a Express or Savanah Van thru 2002 in a 1500 or 7200#GVW 2500 model.

Spindles (unless you want dropped spindles)
Rotors (if you find a 7200# GVW 2500 series)
Calipers
Front caliper hoses
Outer tie rods
Tie rod adjusting sleeve
Lower control arm from a C20 (the '67-'72 have shorter bumpstop brackets. The '73-'87's will work, but may need to modify bumpstop bracket depending on rideheight)

Don't forget all the little parts like, spindle nuts and washers, dust caps, nuts, bolts, washers, etc.

The following are part numbers for new or rebuilt parts that can be sourced from your local auto parts store. Some of these are duplicates of the above in case you need new parts instead of good used ones. These part numbers I found online at CSK/O'Reilleys website. I looked these parts up for a '90 C2500 7200#GVW pickup.

Rotors
Raybestos 56915RGS

Outer Bearing
CR bearing BR3

Inner Bearing
CR bearing BR5

Inner Seal
CR seal 19984

Inner Tie Rod
McQuay-Norris ES2020L

Outer Tie Rod
McQuay-Norris ES2836RL

Tie Rod Adjusting Sleeve
McQuay-Norris ES2004S

Unloaded Calipers
Cardone 184299 (R)
Cardone 184300 (L)

Loaded Calipers
Cardone 154299 (R)
Cardone 154300 (L)

Semi-Metalic brake pads
Brake Best MKD369 (cheapest)
Brake Best SM369 (next best)

There are many brake pads to choose from. It just depends what you want performance wise and budget wise.

Front Hoses
Brake Best BH177760 (L)
Brake Best BH177761 (R)

Raybestos BH38620 (L)
Raybestos BH38621 (R)

Upper Ball Joint
McQuay-Norris FA1616

Moog K6292

Lower Ball Joint
McQuay-Norris FA1617

Moog K6293


I think that about covers it. If you find any errors, let me know and I'll correct it in this post. If you have anything to add, post up.