5 lug or 6 lug?

Discussion in '1947-1954' started by hardcrab, Apr 13, 2009.

  1. hardcrab

    hardcrab Member

    Joined:
    Feb 2, 2009
    Messages:
    18
    Location:
    Northern Neck of VA
    Hey gang,
    I got a 1/2 ton axle to put on my '50 3600 so I can upgrade the front brakes. I was going to just use the bendix brakes that are on the axle, but after taking them apart and seeing all needs to be replaced I think I'd be as well off getting a disc set up for the front. I see the discs are offered in both 5 and 6 lug and I don't know which to get. I can understand matching the rear wheels, but my rears are 8 lug right now, so is there any reason to choose 5 over the 6 for the new fronts? I do plan to change the rear end in another year or so- am I more likely to find a 5 or 6 lug doner for the rear?

    Also, I know a couple of guys here have put a half ton axle on a 3/4 ton truck- anything I need to look out for?

    thanks for the help-
     
  2. WHITEBULL

    WHITEBULL Member

    Joined:
    Mar 4, 2009
    Messages:
    44
    Location:
    Portola,CA
    I went with the 5" 4 3/4 pattern because of the rim availability. More choices with this setup, as you can use almost any Chevy rear end, rims, etc.
     
  3. drummin52

    drummin52 Member

    Joined:
    Nov 22, 2008
    Messages:
    156
    Location:
    Wapwallopen, Pa
    I am one of those who installed a 1/2 ton axle on my 52 3/4 ton truck and did not run into any problems in the swap. All the 3/4 ton parts bolted directly up to the 1/2 ton axle. I also installed a 5 lug disc brake kit and power steering as well and so far haven't seen any problems there either. Just for the record my truck is not on the road yet.
     
  4. hardcrab

    hardcrab Member

    Joined:
    Feb 2, 2009
    Messages:
    18
    Location:
    Northern Neck of VA
    Thanks guys-

    Have you changed your rear set up yet? If so, what did you use?
     
  5. drummin52

    drummin52 Member

    Joined:
    Nov 22, 2008
    Messages:
    156
    Location:
    Wapwallopen, Pa
  6. Kens 50 PU

    Kens 50 PU Member

    Joined:
    Jun 8, 2006
    Messages:
    3,403
    Location:
    tomball, tx
  7. mikesters1950

    mikesters1950 Member

    Joined:
    May 7, 2003
    Messages:
    233
    Location:
    Roseville USA
    Chris,
    Are you running a toyota steering box? Where does the power steering pump mount. I think I may see it just below the alternator. I have an a/c compressor in that spot, but would maybe like to convert it to p/s also. Can the same setup be done with manual steering box? Just swirling around some ideas.
    Thanks.....Mike
     
  8. BIG CHEVY 3600

    BIG CHEVY 3600 Member

    Joined:
    Jan 17, 2008
    Messages:
    142
    Location:
    Dallas
    decide on what rear you will use first. Best bet is to go ahead and buy the rear so you will not have to search when you need it. That is if you have room in your den for it.:D
     
  9. ol' chebby

    ol' chebby Member

    Joined:
    Dec 11, 2007
    Messages:
    3,164
    Location:
    Charlotte,NC
    do the rear first, then match it. I find that F**d has a greater selection of factory steel wheels, that look old school. There are also lots of other cars and trucks that use 5x4 1/2 pattern.
     
  10. drummin52

    drummin52 Member

    Joined:
    Nov 22, 2008
    Messages:
    156
    Location:
    Wapwallopen, Pa
  11. Bill Hanlon

    Bill Hanlon Member

    Joined:
    Jun 4, 2002
    Messages:
    2,746
    Location:
    Fredericksburg TX
    That's the same kit (although I bought it from Br0ther's) that I put on my '57. Beware of bump steer if the drag link isn't parallel to the ground.
     
  12. mikesters1950

    mikesters1950 Member

    Joined:
    May 7, 2003
    Messages:
    233
    Location:
    Roseville USA
    Chris,
    Thanks for the great pictures. That helps a lot. I will save them for reference. Still unsure which direction I may go........Mike
     
  13. Zig

    Zig Member

    Joined:
    Oct 14, 2006
    Messages:
    4,860
    Location:
    Pittsburg KS
    ~Pictures~ of a 6-lug disc conversion

    Thanks to Bill Hanlon, I spent a fair amount of time over on the "G" site. Here is a link to some great pictures that show a CPP 6-lug, disc brake conversion.
    (I just L-O-V-E pictures!!!):D
    Hope it helps anyone who might be thinking of doing this...

    http://jbhardin-gallery.com/trucks/54gmc.html
     

Share This Page