c20 to c10 conversion? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

dropped65c20 · 11-07-2009, 12:38 AM

I am looking to change my c20 over to a c10 and was wondering if i have to change the whole front suspension over. I would think that the upper and lower control arms are the same, so i figure maybe i could just change out the drums and whatever else right there and that should be good right?

**lolife99** · 11-07-2009, 12:50 PM

Are you converting to disc brakes at the same time?

C20 lower control arms are different than C10 lowers.
The balljoint hole in the C20 lower control arm is larger.
(Upper and lower balljoints are also different)

Ackattack · 11-07-2009, 01:30 PM

The outer tie rods are also different sized

Ronm909 · 11-07-2009, 03:14 PM

I did this to my 67,,, bought a 87 suburban for $500.. swapped out everything. complete front crossmember with all suspension.. and axle,, instant 5 lug and dics brakes....

dropped65c20 · 11-07-2009, 03:31 PM

Quote:

Originally Posted by lolife99

Are you converting to disc brakes at the same time?

C20 lower control arms are different than C10 lowers.
The balljoint hole in the C20 lower control arm is larger.
(Upper and lower balljoints are also different)

Naw, i was gonna stay with drums for now. I ended up getting a full suspension with the c20 from a 63 c10 when i bought it.

dropped65c20 · 11-07-2009, 03:34 PM

Is it safe to say that i probally should change out everything when i convert over to 1/2 ton?

Ronm909 · 11-07-2009, 04:06 PM

hey I got the stock sindle from that 87 suburban with brakes on it, I was going to use it but I ended up buying a drop spindle kit with all new disc brakes from CPP at the last pomona swap meet.. you can have it.. not sure how far you are from me,,,

**lolife99** · 11-07-2009, 08:55 PM

Quote:

Originally Posted by dropped65c20

Is it safe to say that i probally should change out everything when i convert over to 1/2 ton?

yes.

dropped65c20 · 11-08-2009, 11:28 PM

Quote:

Originally Posted by Ronm909

hey I got the stock sindle from that 87 suburban with brakes on it, I was going to use it but I ended up buying a drop spindle kit with all new disc brakes from CPP at the last pomona swap meet.. you can have it.. not sure how far you are from me,,,

Five lug or 6?

**N2TRUX** · 11-08-2009, 11:35 PM

Quote:

Originally Posted by dropped65c20

Five lug or 6?

87 Burb is going to be 5 lug.

**lolife99** · 11-08-2009, 11:39 PM

Quote:

Originally Posted by dropped65c20

Naw, i was gonna stay with drums for now. I ended up getting a full suspension with the c20 from a 63 c10 when i bought it.

63 C10 will be 6-lug drum brake.
The 5-lug 'burb suspension will require you to change to disc brakes.
(Master cylinder and porportioning valve also)

Ronm909 · 11-09-2009, 10:22 PM

its a 5 lug set up, got the matching master cyclinder with booster too..

Mike Bradbury · 11-10-2009, 11:16 AM

Early Classics has a lower control arm ball joint that fits the C20 arm and the C10 spindle. I believe they have the tie rod end conversion as well.
I am doing the same conversion and am using all the C20 equipment but converting to lowered C10 5 lug spindles and disc brakes.

KevinK7 · 03-08-2018, 11:31 PM

Resurrecting...( a really old thread)

, But there's some good information here.

Since my '68 is a C20 what are my options (staying 8 lug) to get disc brakes up front? ...and a drop?

Ideally I would like to drop the truck some and also get disc brakes. I believe staying 8 lug (since I am finding some 8 lug wheels I like) might be the easier route to go since I could just stick with the rear axle I have now.

Also, ...a major kudos to LoLife99 (Kieth) for putting this together:
Convert to disc brakes.
http://67-72chevytrucks.com/vboard/s...d.php?t=444823

A huge help indeed. Thanks!

**lolife99** · 03-09-2018, 05:53 AM

www.performanceonline.com sells 8-Lug drop spindle kits.
That’s the best option for disc brakes and a correct method to drop your truck.

KevinK7 · 03-09-2018, 10:00 AM

Quote:

Originally Posted by lolife99

www.performanceonline.com sells 8-Lug drop spindle kits.
That’s the best option for disc brakes and a correct method to drop your truck.

Thank You for that link , ...looks like the path I will go

11-07-2009, 12:38 AM	#1
dropped65c20 Registered User Join Date: Feb 2009 Location: San Luis Obispo, CA Posts: 32	c20 to c10 conversion? I am looking to change my c20 over to a c10 and was wondering if i have to change the whole front suspension over. I would think that the upper and lower control arms are the same, so i figure maybe i could just change out the drums and whatever else right there and that should be good right? __________________ 65 c20 - Shes's rough but she's a diamond in the rough 00 Mustang GT 07 Honda CBR600RR

11-07-2009, 12:50 PM	#2
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,682	Re: c20 to c10 conversion? Are you converting to disc brakes at the same time? C20 lower control arms are different than C10 lowers. The balljoint hole in the C20 lower control arm is larger. (Upper and lower balljoints are also different) __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 Last edited by lolife99; 11-07-2009 at 12:51 PM.

11-07-2009, 01:30 PM	#3
Ackattack Senior Member Join Date: Aug 2002 Location: Valley Center KS Posts: 3,525	Re: c20 to c10 conversion? The outer tie rods are also different sized __________________ Project Bruiser: 68 Pro-Touring C-10 5.3L / 4L60E Project Ironhide: 97 GMC Crew Cab 4x4 Cummins SOLD: '69 GMC 1/2T SWB TBI'd: Project No Buck Assembly Manual Index Sign up Thread!!! Factory Service Manual Index

11-07-2009, 03:14 PM	#4
Ronm909 67GMC Slammed Join Date: Feb 2009 Location: Rancho Cucamonga, Ca Posts: 255	Re: c20 to c10 conversion? I did this to my 67,,, bought a 87 suburban for $500.. swapped out everything. complete front crossmember with all suspension.. and axle,, instant 5 lug and dics brakes....

11-07-2009, 03:34 PM	#6
dropped65c20 Registered User Join Date: Feb 2009 Location: San Luis Obispo, CA Posts: 32	Re: c20 to c10 conversion? Is it safe to say that i probally should change out everything when i convert over to 1/2 ton? __________________ 65 c20 - Shes's rough but she's a diamond in the rough 00 Mustang GT 07 Honda CBR600RR

11-07-2009, 04:06 PM	#7
Ronm909 67GMC Slammed Join Date: Feb 2009 Location: Rancho Cucamonga, Ca Posts: 255	Re: c20 to c10 conversion? hey I got the stock sindle from that 87 suburban with brakes on it, I was going to use it but I ended up buying a drop spindle kit with all new disc brakes from CPP at the last pomona swap meet.. you can have it.. not sure how far you are from me,,,

11-09-2009, 10:22 PM	#12
Ronm909 67GMC Slammed Join Date: Feb 2009 Location: Rancho Cucamonga, Ca Posts: 255	Re: c20 to c10 conversion? its a 5 lug set up, got the matching master cyclinder with booster too.. Last edited by Ronm909; 11-09-2009 at 10:24 PM.

11-10-2009, 11:16 AM	#13
Mike Bradbury Registered User Join Date: Apr 2008 Location: San Diego California Posts: 1,316	Re: c20 to c10 conversion? Early Classics has a lower control arm ball joint that fits the C20 arm and the C10 spindle. I believe they have the tie rod end conversion as well. I am doing the same conversion and am using all the C20 equipment but converting to lowered C10 5 lug spindles and disc brakes. __________________ I'd rather attempt something great and fail.. than try something ordinary and succeed. Norman Vincent Peale Project: Barn Raising http://67-72chevytrucks.com/vboard/s...d.php?t=414961 Project: 30 Be Low https://67-72chevytrucks.com/vboard/...d.php?t=830583

03-08-2018, 11:31 PM	#14
KevinK7 Registered User Join Date: Oct 2017 Location: Hudson Valley, New York Posts: 609	Re: c20 to c10 conversion? Resurrecting...( a really old thread) , But there's some good information here. Since my '68 is a C20 what are my options (staying 8 lug) to get disc brakes up front? ...and a drop? Ideally I would like to drop the truck some and also get disc brakes. I believe staying 8 lug (since I am finding some 8 lug wheels I like) might be the easier route to go since I could just stick with the rear axle I have now. Also, ...a major kudos to LoLife99 (Kieth) for putting this together: Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 A huge help indeed. Thanks! Last edited by KevinK7; 03-08-2018 at 11:40 PM.

03-09-2018, 05:53 AM	#15
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,682	Re: c20 to c10 conversion? www.performanceonline.com sells 8-Lug drop spindle kits. That’s the best option for disc brakes and a correct method to drop your truck. __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823

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