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Old 10-06-2015, 07:45 PM   #1
70 c10 rook
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70 c10 drum to disk

I just picked up a 70 c10 swb and want to convert from drum to disk. Do i need to get upper and lower arms or can I just get a kit or if i"m lucky find some used disk Parts and use the arms that are on the truck. 350 v8.Any help would be great. I am a newbie to this. THANKS
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Old 10-06-2015, 08:05 PM   #2
Mike C
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Re: 70 c10 drum to disk

http://www.google.com/custom?domains...D%3A1%3B&hl=en

http://67-72chevytrucks.com/vboard/s...d.php?t=456889
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Old 10-06-2015, 08:36 PM   #3
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Re: 70 c10 drum to disk

Read the threads above^^^.
Then buy 63-70 conversion spindles.

The rest can be purchased locally.
71-87 HD rotors, calipers, bearings.
Use a 71-72 master cylinder and prop valve.
(or use an aftermarket M/C or prop valve).
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Old 10-06-2015, 10:45 PM   #4
70 c10 rook
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Re: 70 c10 drum to disk

Thanks guys, I just got off the phone with a guy that has a whole 71 cross member 5 lug disk for 300 does that sound reasonable
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Old 10-06-2015, 11:11 PM   #5
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Re: 70 c10 drum to disk

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Originally Posted by 70 c10 rook View Post
Thanks guys, I just got off the phone with a guy that has a whole 71 cross member 5 lug disk for 300 does that sound reasonable
What Parts are you going to re-use?
Everything is wore out.
You will need all new balljoints, tie rods, rotors, calipers, bearings, a-arm cross shafts and bushings, etc.
You might reuse the spindles and the centerlink.

I had two 73-87 crossmember assemblies that went to scrap because I couldn't sell them for $50.
Save your money and buy new parts.
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Old 10-06-2015, 11:40 PM   #6
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Re: 70 c10 drum to disk

I plan on using the conversion spindle on my 69 when I add disk brakes.
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Old 10-07-2015, 12:37 AM   #7
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Re: 70 c10 drum to disk

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Originally Posted by 70 c10 rook View Post
Thanks guys, I just got off the phone with a guy that has a whole 71 cross member 5 lug disk for 300 does that sound reasonable
Even if you swap the entire crossmember in, it's a lot of work removing the factory rivets, and after all that labor you are still installing worn out parts as lolife stated. Buy conversion spindles specific to your year truck. All other parts can be sourced new at your local parts store at the counter very very easily. The only part I had a problem sourcing locally were "conversion" hoses that bolt to the calipers AND the existing hard lines. Ece offers them for $55 a pair plus shipping. After reading threads here on the board and cross referencing part numbers, I found autozone carries them on the shelf for $9.99 each. Part number is 88466. Banjo bolts are part number 13935, used to attach them at the caliper end.
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Old 10-07-2015, 01:04 AM   #8
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Re: 70 c10 drum to disk

Great info on the conversion hoses!^^^
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Old 10-07-2015, 01:32 AM   #9
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Re: 70 c10 drum to disk

Here is a pic for reference. Hoses also come with copper washers necessary to prevent leaks.
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Old 10-07-2015, 09:32 AM   #10
70 c10 rook
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Re: 70 c10 drum to disk

Thanks for all the info.The more I read the more educated I get sounds like new parts are the way to go.Its going to be a marathon and not a race
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Old 10-07-2015, 09:37 AM   #11
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Re: 70 c10 drum to disk

What about brake line going to the prop valve will mine bolt right up or will i need to get those as well?
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Old 10-07-2015, 11:52 AM   #12
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Re: 70 c10 drum to disk

I usually bend my own brake lines.
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Old 10-07-2015, 12:22 PM   #13
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Re: 70 c10 drum to disk

if you go with the 71 set up definatly get the steering linkage as well. youll need it and if you can get the brake lines grab those too if theyre in good shape, might as well add the brake booster and disk/drum prop valve as well. you will definatly need the prop valve
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Old 10-07-2015, 10:41 PM   #14
70 c10 rook
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Question Re: 70 c10 drum to disk

Where is the best place to buy conversion spindles? I was looking on summit but there's a number to pick from is one brand better than the rest? Summit says they have spindles for a 70 even though70's didn't have disk brakes I'm going in circles
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Old 10-07-2015, 11:10 PM   #15
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Re: 70 c10 drum to disk

Yes Summit is a good place to order from.
Call and talk to them.
I doubt anyone sells drum brake spindles, do the 70 spindles they list are the 63-70 conversion spindles.
The cheapest should be around $229/pair.
You have to choose stock height or drop spindles.
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Old 10-07-2015, 11:12 PM   #16
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Re: 70 c10 drum to disk

The other option is to call www.earlyclassic.com.
But expect to pay more.
You could hit up some of the board vendors also.
They will know exactly what you need.
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Old 10-08-2015, 12:04 AM   #17
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Re: 70 c10 drum to disk

I bought mine from summit, mcgaughy brand. I bought the spindles and the entire rotor kit. Worth it for me to have every part sent to my door. Literally took old stuff off and installed new. Pretty straight forward. I did replace all the ball joints and tie rod ends, but got all that from oreilly. The mcgaughy kit uses the original a arms and ball joints.
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Old 10-08-2015, 01:02 AM   #18
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Re: 70 c10 drum to disk

Quote:
Originally Posted by Kaptain Kadian View Post
I bought mine from summit, mcgaughy brand. I bought the spindles and the entire rotor kit. Worth it for me to have every part sent to my door. Literally took old stuff off and installed new. Pretty straight forward. I did replace all the ball joints and tie rod ends, but got all that from oreilly. The mcgaughy kit uses the original a arms and ball joints.
Is this what you got? http://www.ebay.com/itm/chevrolet-c1...3D381372942433

I know you guys swear by ECE but I have an extremely hard time paying the same price for disc brakes as I "paid"(traded $1,000 s10 for it) for my truck.

Anyone else installed this kit?
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Old 10-08-2015, 08:00 AM   #19
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Re: 70 c10 drum to disk

Quote:
Originally Posted by 70 c10 rook View Post
I just picked up a 70 c10 swb and want to convert from drum to disk. Do i need to get upper and lower arms or can I just get a kit or if i"m lucky find some used disk Parts and use the arms that are on the truck. 350 v8.Any help would be great. I am a newbie to this. THANKS
I am doing the same exact thing 70 C10 L6 250. I ordered a complete Power brake kit from Brother's and I should be starting the project within the next few weeks.
I thought... Let's start with all NEW parts instead of used to avoid worn out items that would need to be replaced during or after the install.

I will post info/challenges as it arises during the install.

Bill
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Old 10-08-2015, 09:11 AM   #20
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Re: 70 c10 drum to disk

Yes that is the kit I used. I didn't get drop spindles. I stuck with standard ride height. Those have better rotors too. Mine were not drilled and slotted.
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Old 10-08-2015, 02:01 PM   #21
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Re: 70 c10 drum to disk

Every thing depends on if you are lowering it, stock height, or raising it. Keep the 6 lug too. 5 lug is for girls.
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Old 10-08-2015, 08:44 PM   #22
70 c10 rook
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Re: 70 c10 drum to disk

Thanks for all the info, getting excited to start building
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