Re: Disc Brake Upgrade Reference Thread
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I did a disc swap on my 68 & ran poverty caps on OE 5-lug truck wheels up front w/poverty caps on the OE 6-lug wheels for the rear for several months before swapping the rear axles to 5-lug. If the concern is a spare that fits all 4 corners, Wheel Vintiques, Early Classic, & Stockton each make an OE appearing steelie in various sizes (they don't have to be 16's). |
Re: Disc Brake Upgrade Reference Thread
Thanks Scoti, that's good info. Good point about the 5 and 6 / front and back - not a big deal visually (but that spare thing..... I better find a jack too, I keep forgetting to pick one up - then I can worry about tires). Also, thanks for the 15 inch info.
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Re: Disc Brake Upgrade Reference Thread
To add to the wheel discussion, you might want to look at factory wheels from a 71-up K-10. These trucks had disc brakes with 6 lugs, and at least some of them had 15" wheels.
Ray |
Re: Disc Brake Upgrade Reference Thread
would it be the correct bolt circle? that's a great idea, had not thought of that, but they would clear discs. You might be onto something there.. Seems most of them had rallies on them that I have seen, but I think that's because folks PUT them on afterward in many cases - I know I've seen some K10s with steelies.
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Re: Disc Brake Upgrade Reference Thread
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Re: Disc Brake Upgrade Reference Thread
I've looked this over a couple times and maybe still missed it. My 70 2wd has 6 lug disc. On the part swap from 6 to 5, what thickness of 5 lug rotor (1 1/4?) is needed and will this work with the current disc brake caliper?
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Re: Disc Brake Upgrade Reference Thread
If your '70 has 6 lug discs up front, they aren't original. They could be either aftermarket rotors for the '71-'87 spindles (I believe those are the 1 1/4" rotors) or they are the '88-'98 light duty 2500 series rotors, spindles and calipers. In light of those possibilities, I would suggest taking a few pics of what you have (particularily the calipers) and post them here, and we can determine which front disc's you have. The parts are not interchangeable between the two options I listed.
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Re: Disc Brake Upgrade Reference Thread
Cool, I figured they had just use a 71+ front end. I'll try to get some pictures up soon, thanks for the help.
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Re: Disc Brake Upgrade Reference Thread
got some c20 questions. i have a 70. what is the required to swap to disc up front and would like to run drop spindles. would just rather swap to 1/2 ton specs but i dont want to search for a rear end. thanks in advance
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Re: Disc Brake Upgrade Reference Thread
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The rear is going to require swapping..... thus some searching for the replacement. If it's a rear coil truck, 71-72 5-lug housings are a direct swap. 67-70 6-lug housings are 1.5" narrower than 71-72 housings & can have aftermarket 5-lug axles/drums swapped in. 73-87 housings are wider like the 71-72's. These will require more effort for the swap depending again on rear suspension type. |
Re: Disc Brake Upgrade Reference Thread
Nice thread!
i have a 84 full front clip i rather just use the a arms and drop spindels from it and keep the assit power steering.. is it possible? will the 65 tie rods be a issue hooking up to a new drop spindel |
Re: Disc Brake Upgrade Reference Thread
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Re: Disc Brake Upgrade Reference Thread
Great thread with a lot of excellent info. Bookmarking for reference for my own upcoming swap.
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Re: Disc Brake Upgrade Reference Thread
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If I use my steering parts will still be able to use the assist or will have to upgrade the steering box |
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Re: Disc Brake Upgrade Reference Thread
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Ray |
Re: Disc Brake Upgrade Reference Thread
:metal:
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CAPTAINFAB.....:metal: HEy CAPTAINFAB im going to be sending you some paypal cash tomorrow!!! need the power steering bracket and brake bracket |
Re: Disc Brake Upgrade Reference Thread
My son and I put the parts from an ’81 GMC under the 64 on the original cross member. Everything went pretty smooth. One thing to look out for, when drilling the holes out for the 9/16 U bolts, be sure to keep the bit from wandering toward the cross member. We had 2 holes that we had to wrench because we could not get a socket on them. We used the booster and MC from the ’81. We also reused all of the front brake lines. We disconnected the line on the going to the rear underneath the cab. The lines going to the front brakes will use the oval holes in front of the cross member. We used some new ¼” lines going to the back. 1, 51” long and 1, 12” line and 2 couplers. I bought a ¼ to 3/16 adapter but I did not need it. The original rear brake hose had a 3/16 double flare. The hose that I got from O’reilly’s that was supposed to be for the ’64 had a ¼ fitting. The numbers are: Brake Best BH401640. The box also reads that this number replaces DOR BH36502 and RAY 36502.
The truck sits a little higher now in the front. I suppose due to the old springs sagging. We haven’t done the back yet. Also it turns tighter to the left than the right. Do you know if I have something wrong? I may trim the right stop. I couldn't find my pics. I'll take more and post them later. |
Re: Disc Brake Upgrade Reference Thread
so, if this donor 85 truck i have access to has 1" rotors. the front suspension and brakes are useless to me on the 66
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Re: Disc Brake Upgrade Reference Thread
Not completely, unless you don't want to upgrade the upper and lower control arms. The 1" rotor brakes will still be a big improvement over the drums. Of course if you can find a suspension with the 1.250 rotors that would be the way to go. But if you can't find one, you can install this suspension and always upgrade later on.
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Re: Disc Brake Upgrade Reference Thread
This information is so useful!!! I am curious if this will work for my 52 C-10. I purchased a '88 1500 for the 350 crate motor and the 5 speed manual transmission. I want to stay with 6 lug on the '52. Can I use the '88 truck for my conversion?
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Re: Disc Brake Upgrade Reference Thread
If i have a 73-87 front end. What rotors will interchange with these spindles so i will have 5 4-1/2 or 5 4-3/4" bolt pattern? My wheels are both bolt patterns.
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Re: Disc Brake Upgrade Reference Thread
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http://www.performanceonline.com/DIS...10-TRUCK-5514/ |
Re: Disc Brake Upgrade Reference Thread
I'm not that familar with the '49-'55 truck frames, so I'm not sure what to say at this point. What is the width of the frame directly above the front axle.
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Re: Disc Brake Upgrade Reference Thread
I know this has been beat to death on this site but, can someone please give me the face to face width on the front end & rear end of my 64 with drums? Also the same dimensions for the 73-87 front end rotors & rear end drums. I am trying to figure different wheels and backspacing configurations.
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Re: Disc Brake Upgrade Reference Thread
The rears are 62" and 63-1/2". I have never measured the fronts.
Ray |
Re: Disc Brake Upgrade Reference Thread
I'll see if I can remember to measure a couple front suspensions I have at the shop tomorrow.
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Re: Disc Brake Upgrade Reference Thread
adapter sleeve that mates your original inner tie rod to the later model outer tie rod
does anyone know where to buy this at |
Re: Disc Brake Upgrade Reference Thread
The guys that use them get them from CPP, ECE and maybe POL. There are ways around buying those. One is to simply upgrade the entire steering linkage to the '73-'87 parts. Another way, but I haven't confirmed this, is to change your inner tierods to the ES2020L tierods. These will mate up with the '73-'87 outer tierods with the '73-'87 adjusting sleeve. But like I said, I haven't confirmed that those inners will fit the taper in the '63-'70 draglink.
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Re: Disc Brake Upgrade Reference Thread
i just wanted to make it as cheap as i can. by changing the spindels and the upper and lower tie rod
and using the adapters was the cheaper way. others wise im going to have to replace and buy ever single item i want to upgrade to disc but im on a budget if someone has a link to those adapter sleeve would be great! |
Re: Disc Brake Upgrade Reference Thread
here's what i've found to be the easiest: Early Classic Enterprises has a spindle that works with the stock 64-66 suspension. I've grabbed calipers, booster, master and small parts from a 80 G-20 van. Yard parts=$50. Dropped spindles and 6 lug 1 1/4 rotors+dust caps, bearings, etc small pieces=500. So for $550 I will upgrade everything. If I went to 5 lug I could subtract about 130 from that total of new parts.
Freaking gorgeous pieces from ECE. can't wait to get my spindles. The extra benefit is that they are 12" rotors, not the 10" found in some of the kits. Massive freaking rotors. I'll post pics of the upgrade when I have all the parts. :metal: |
Re: Disc Brake Upgrade Reference Thread
I looked for those adapter adjusting sleeves but couldn'r find them....I know I've seen them before, and have seen guys on here using them. Maybe one of them will chime in. Seems to me they were a little $$. You might check into the cost on those inner tierods I listed above, plus a pair of stock '73-'87 adjusting sleeves, and see how they compare to the adapter sleeves cost wise.
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Re: Disc Brake Upgrade Reference Thread
I did get around to measuring a couple of front suspensions. Bear in mind that these were both 'unloaded' suspensions, so the actual width in the driving position will be slightly wider. Plus I couldn't get a real accurate measurement with where they were.
So the '63-'70 C10 front drum brake suspension measures 62" WMS to WMS. The '73-'87 C10 front disc brake suspension measures 63.5". So they appear to be basically the same width as the rear differentials for the respective years. Quote:
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Re: Disc Brake Upgrade Reference Thread
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and i have an assit power steering. which i dont really need to upgrade that front 84 clip i have need to be overhauled i need to buy every for it on top of that i still need adapter for the power steering and for the power brake boosterplus..its adding up! |
Re: Disc Brake Upgrade Reference Thread
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Re: Disc Brake Upgrade Reference Thread
You might try sending a PM to JGross. I was just looking at a pic of his front steering, and it looks like he may have bought what you're looking for.
Here is where the pic is....... http://www.67-72chevytrucks.com/vboa...d.php?t=416069 Quote:
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Re: Disc Brake Upgrade Reference Thread
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well i just sold my spindels and bought the ones on ecc |
Re: Disc Brake Upgrade Reference Thread
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 |
Re: Disc Brake Upgrade Reference Thread
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.
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Re: Disc Brake Upgrade Reference Thread
ive just search each part number and some were incorrect part numbers and the rest were exact parts listed
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