'69 C20 Front Drum to Disc help - The 1947 - Present Chevrolet & GMC Truck Message Board Network

HarrisonTX · 09-11-2010, 02:23 PM

From what I've been reading, your 1/2 guys have it pretty easy when it comes to swapping from drums to discs up front.

Are there any easy options for a drum to disc swap on a 1969 3/4 "Custom/Camper"?

Sinister · 09-11-2010, 03:37 PM

Easiest would be to get stuff off of a '71-'72 C-20. Spindles, rotors, calipers, drag link, inner and outer tierods, ball joints as well as master cylinder and prop valve. Still trying to figure out brake hoses/lines on this swap. I think I remember hearing '73 C-20 brake hoses might work with the '69 hardlines. There are some members that have done this swap, maybe they'll chime in.

HarrisonTX · 09-11-2010, 04:10 PM

Awesome. Didnt expect it to be that simple. I've looked into it before, and was discouraged.

Seems like everything is a bolt on?
You can always get the brake lines made.

Sinister · 09-11-2010, 04:28 PM

Everything's bolt in from what I've been told. I have most of the parts to do it, but I just recently rebuilt everything on my drum brakes, so this project is going to have to wait.

tasian · 09-11-2010, 04:29 PM

You can also use the 73-87 disc setups like lots of the 1/2 ton guys do just get it from a 3/4 ton if you look around there is lots of info on it all pretty simple unbolting and bolting

Mike C · 09-11-2010, 05:19 PM

Not sure exactly what my components were from, but I bought a 70 3/4 ton that already had a disc swap done and swapped it onto my 70 GMC. I bought new steel lines and ran them from the master cylinder. I used the drum booster with a new disc master. I cut the tabs that hold the rubber lines where the steel ones attach and re-welded them to the crossmember. Best mod ever!

SCOTI · 09-12-2010, 12:31 AM

Use 73-87 3/4 ton stuff. It will swap over to your existing a-arms using the 73-87 BJ's.

HarrisonTX · 09-12-2010, 02:29 PM

Quote:

Originally Posted by SCOTI

Use 73-87 3/4 ton stuff. It will swap over to your existing a-arms using the 73-87 BJ's.

Seems like the simplest idea so far.
So, from the Donor truck, I would need: Calipers, discs and spindles?

treveiger · 09-12-2010, 07:09 PM

The guy that did mine just swaped out the whole crossmember and everything from a earlys 70s truck.

SCOTI · 09-12-2010, 10:32 PM

Quote:

Originally Posted by HarrisonTX

Seems like the simplest idea so far.
So, from the Donor truck, I would need: Calipers, discs and spindles?

Get everything between the spindle steering arms as well. Use the 73-up tie-rods & draglink for simplicity.

**LostMy65** · 11-03-2010, 12:25 AM

Here is the thread I was looking for.

Question:
is it better to just swap crossmember and all?

09-11-2010, 02:23 PM	#1
HarrisonTX Registered User Join Date: Nov 2003 Location: Waco TX Posts: 247	'69 C20 Front Drum to Disc help From what I've been reading, your 1/2 guys have it pretty easy when it comes to swapping from drums to discs up front. Are there any easy options for a drum to disc swap on a 1969 3/4 "Custom/Camper"? __________________ '69 custom/camper '74 260z 302 chevy/tko500 swap in progrss '79 Malibu 355 all forged 4 speed car. '86 k5 blazer '06 Duramax

09-11-2010, 03:37 PM	#2
Sinister Between Trucks... Join Date: Mar 2002 Location: Los Angeles, CA. Posts: 3,830	Re: '69 C20 Front Drum to Disc help Easiest would be to get stuff off of a '71-'72 C-20. Spindles, rotors, calipers, drag link, inner and outer tierods, ball joints as well as master cylinder and prop valve. Still trying to figure out brake hoses/lines on this swap. I think I remember hearing '73 C-20 brake hoses might work with the '69 hardlines. There are some members that have done this swap, maybe they'll chime in. __________________ Beat it to fit, Paint it to match...

09-11-2010, 04:10 PM	#3
HarrisonTX Registered User Join Date: Nov 2003 Location: Waco TX Posts: 247	Re: '69 C20 Front Drum to Disc help Awesome. Didnt expect it to be that simple. I've looked into it before, and was discouraged. Seems like everything is a bolt on? You can always get the brake lines made. __________________ '69 custom/camper '74 260z 302 chevy/tko500 swap in progrss '79 Malibu 355 all forged 4 speed car. '86 k5 blazer '06 Duramax

09-11-2010, 04:28 PM	#4
Sinister Between Trucks... Join Date: Mar 2002 Location: Los Angeles, CA. Posts: 3,830	Re: '69 C20 Front Drum to Disc help Everything's bolt in from what I've been told. I have most of the parts to do it, but I just recently rebuilt everything on my drum brakes, so this project is going to have to wait. __________________ Beat it to fit, Paint it to match...

09-11-2010, 04:29 PM	#5
tasian Registered User Join Date: Dec 2009 Location: hangtown, ca Posts: 244	Re: '69 C20 Front Drum to Disc help You can also use the 73-87 disc setups like lots of the 1/2 ton guys do just get it from a 3/4 ton if you look around there is lots of info on it all pretty simple unbolting and bolting __________________ Betsy's build 70 c20 4 speed 406sb

09-11-2010, 05:19 PM	#6
Mike C Registered User Join Date: Dec 1999 Location: Austin, TX, USA Posts: 7,714	Re: '69 C20 Front Drum to Disc help Not sure exactly what my components were from, but I bought a 70 3/4 ton that already had a disc swap done and swapped it onto my 70 GMC. I bought new steel lines and ran them from the master cylinder. I used the drum booster with a new disc master. I cut the tabs that hold the rubber lines where the steel ones attach and re-welded them to the crossmember. Best mod ever! __________________ 44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax

09-12-2010, 12:31 AM	#7
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 21,919	Re: '69 C20 Front Drum to Disc help Use 73-87 3/4 ton stuff. It will swap over to your existing a-arms using the 73-87 BJ's. __________________ 67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... *Cubic inches is like Indiana Jones with a cheap pistol.*

09-12-2010, 07:09 PM	#9
treveiger Senior Member Join Date: Jul 2010 Location: South Dakota Posts: 4,093	Re: '69 C20 Front Drum to Disc help The guy that did mine just swaped out the whole crossmember and everything from a earlys 70s truck.

11-03-2010, 12:25 AM	#11
LostMy65 But Found Her 25yrs Later! Join Date: Oct 2010 Location: Oregon City, Oregon Posts: 10,507	Re: '69 C20 Front Drum to Disc help Here is the thread I was looking for. Question: is it better to just swap crossmember and all? __________________ I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035



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