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#1 |
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Join Date: Mar 2011
Location: Kansas City, Missouri
Posts: 3,541
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switching 6 lug drum to 4 3/4 5 lug disc questiond
I'm working on a 1969 Swb and I'm wanting to switch the 6 lug drum brakes on the front to 4 3/4 5 lug disc. I would prefer to go to the junkyard and pull parts from donor vehicles and rebuild the front end myself. I'm doing a 4 1/2 inch drop using 2.5 in drop spindles and a 2 inch drop coil in the front and 6 inch drop in the back. Has anyone done this swap before. I'm also wanting to keep my drum brake A arms because they have already been painted by the previous owner of the short bed frame I bought. Any help is greatly appreciated.
Thanks, Scott
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#2 |
67-72 parts collector,…
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Re: switching 6 lug drum to 4 3/4 5 lug disc questiond
Have you bought drop spindles yet?
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Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 |
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#3 |
67-72 parts collector,…
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Re: switching 6 lug drum to 4 3/4 5 lug disc questiond
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Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 |
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#4 |
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Re: switching 6 lug drum to 4 3/4 5 lug disc questiond
I haven't bought the spindles yet Keith
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#5 |
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Re: switching 6 lug drum to 4 3/4 5 lug disc questiond
I tried to decipher that thread it confused the heck out of me
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#6 |
67-72 parts collector,…
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Re: switching 6 lug drum to 4 3/4 5 lug disc questiond
Parts needed:
81-87 Light Duty drop spindles. (for 1" rotors) 81-87 Light Duty calipers 91-92 Camaro 1LE (special option) rotors (5x4.75 bolt circle) You will have to use 73-87 ball joints, and outer tie rods. I would get ALL the steering off of a 73-87 truck.
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Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 |
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#7 |
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Re: switching 6 lug drum to 4 3/4 5 lug disc questiond
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#8 |
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Re: switching 6 lug drum to 4 3/4 5 lug disc questiond
The ball joints and tie rods were confusing me and which steering linkage to use
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#9 |
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Re: switching 6 lug drum to 4 3/4 5 lug disc questiond
Will I need a new steering gear box too? or I can I use my 1969 power steering box I have already.
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#10 |
67-72 parts collector,…
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Re: switching 6 lug drum to 4 3/4 5 lug disc questiond
Camaro 1LE rotor specs:
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Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 |
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#11 |
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Re: switching 6 lug drum to 4 3/4 5 lug disc questiond
What are you going to do with the rearend?
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Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 |
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#12 |
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Re: switching 6 lug drum to 4 3/4 5 lug disc questiond
Changing out the rearend to 5 lug but not sure which rearend I have yet? I paid for my frame and its still sitting where I bought it from, I ran out of room here till I get my shortbed I parted out completely and moved out of the driveway. I want to put 5 lug disc on the back also.
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#13 |
67-72 parts collector,…
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Re: switching 6 lug drum to 4 3/4 5 lug disc questiond
Truthfully the McGaughy's or CPP big brake kit is the easiest way to get a 5x4.75 pattern.
(more money) You should be able to use your '69 steering box. Seems like alot of work to get a specific 5x4.75 bolt pattern wheel. (plus the center hub of your 6-lug rear axle is HUGE compared to a 5x5 truck rearend or a car pattern 5x4.75 rearend) Sometimes people end up spending more money on the suspension, to save a few bucks on wheels. Personally,... I would just add 63-70 drop spindles to your truck and use stock 71-87 HD 5x5 rotors and calipers. You will need conversion brake hoses. ECE sells those. Everyone has there reason for the wheels they choose. I just like to know all the options. You won't go to a junkyard and find bolt on 5x4.75 conversion parts.
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Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 |
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#14 |
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Join Date: Mar 2011
Location: Kansas City, Missouri
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Re: switching 6 lug drum to 4 3/4 5 lug disc questiond
I agree with you about it seems like a lot of work after I got to thinking about it after just reading everything you provided. Maybe I'll just stick with 81-87 suspension and do it that way. Thanks for the help Keith, you're always a great help.
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