Lowering my 1970 C20 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

rodzilla67 · 03-06-2015, 03:27 PM

I am new to the board and have really enjoyed looking at everyones builds and the wealth of information found here. I am just starting a build on this truck and one of the first things I would like to address is lowering & converting to 5x5 lug and front Disc. I am hoping to drop front 5 1/2 " and possibly 7" in Rear.

I have some questions maybe you all could help me with:

Can I use a C10 Drop spindle kit on a C20?

What would be best way to achieve this drop?

Suggestions? Advice?

Thank you in advance for any and all help.

hdff · 03-06-2015, 03:35 PM

welcome from TEXAS!!!!!

i can't help ya with your drop question but you might post it the suspension section for more help.

and also wanted to say

rodzilla67 · 03-06-2015, 03:40 PM

I agree on the pics, but unfortunately I live in Maine and we have had 127" of snow this year! Preparing for spring

Sorry didnt see suspension thread.

csfields · 03-06-2015, 04:12 PM

I went with a 6 inch rear drop and 4 inch front drop. Used two inch lowering blocks and four inch shorter springs on the rear along with a bent pan hard bard for clearance and a c notch. The front was 2.5 inch drop spindle and 1.5 inch shorter spring.

hdff · 03-06-2015, 04:17 PM

snow? what is that.... lol we had a pretty cold morning this morning, got down to blustery 34*, burrrrr

rodzilla67 · 03-06-2015, 04:23 PM

Quote:

Originally Posted by csfields

I went with a 6 inch rear drop and 4 inch front drop. Used two inch lowering blocks and four inch shorter springs on the rear along with a bent pan hard bard for clearance and a c notch. The front was 2.5 inch drop spindle and 1.5 inch shorter spring.

Did you use a C10 Drop Spindle? Did you convert your Bolt Pattern to 5 lug?

Stranny64 · 03-06-2015, 10:12 PM

No 5 lug for me yet. I have 5/3 lowering so far. I used springs from GMC Paul's, relocated shocks and trac bar from CPP. Good luck!!!

**70cst** · 03-06-2015, 10:34 PM

Hey rodzilla67 ...

to the forums and

from Ohio.

I will move this to the "Suspension" forum where you might get addition help.

Mike C · 03-06-2015, 10:52 PM

Looks like you posted twice.

http://67-72chevytrucks.com/vboard/s...d.php?t=662556

rodzilla67 · 03-06-2015, 11:06 PM

Quote:

Originally Posted by 70cst

Hey rodzilla67 ...

to the forums and

from Ohio.

I will move this to the "Suspension" forum where you might get addition help.

Thanks I did post there after first response suggested it. No replies there yet.

Mike C · 03-07-2015, 10:10 AM

As I commented in your other thread, ECE is the only company that will let you keep all the rest of your suspension stuff and run 5 lug brakes with their spindle.

Scroll down here and see the C20-C10 spindle.
http://earlyclassic.com/catalog.aspx...ry=New%20Items

And here is a good link that covers many of the questions you have.
http://67-72chevytrucks.com/vboard/s...d.php?t=662011

rodzilla67 · 03-07-2015, 02:06 PM

Quote:

Originally Posted by Mike C

As I commented in your other thread, ECE is the only company that will let you keep all the rest of your suspension stuff and run 5 lug brakes with their spindle.

Scroll down here and see the C20-C10 spindle.
http://earlyclassic.com/catalog.aspx...ry=New%20Items

And here is a good link that covers many of the questions you have.
http://67-72chevytrucks.com/vboard/s...d.php?t=662011

Thank you for reposting this for me.

rodzilla67 · 03-08-2015, 08:58 PM

Just wondering if I can use C10 spindles on a C20? Are they that different?

Was also looking at the possibility of:

http://www.ebay.com/itm/391054955572...%3AMEBIDX%3AIT

Tree-50 · 03-09-2015, 02:22 AM

Quote:

Originally Posted by Mike C

As I commented in your other thread, ECE is the only company that will let you keep all the rest of your suspension stuff and run 5 lug brakes with their spindle.

Scroll down here and see the C20-C10 spindle.
http://earlyclassic.com/catalog.aspx...ry=New%20Items

And here is a good link that covers many of the questions you have.
http://67-72chevytrucks.com/vboard/s...d.php?t=662011

Doesn't mcgaughy have a 63-70 drop/stock spindle 5x5 and 6x5 setup? I just bought the 6x5 for my 68

Idk about spindles though if c10=c20

Basic 12" 5x5

http://www.mcgaughys-suspension.com/...ys-part-63156/

63-70 drop spindle used that year ball joints and tie rods.

http://www.mcgaughys-suspension.com/...ys-part-63173/

13" upgraded 5x5 kit drop spindle included

http://www.mcgaughys-suspension.com/...ys-part-63151/

rodzilla67 · 03-09-2015, 04:19 PM

Tree-50, thank you so much for the links and tips. If I can figure out if I can use C-10 spindles on a C-20 I'll be ready to go! lol

rusty18 · 03-10-2015, 08:19 PM

Rodzilla67,

Lots of info on front changeout.

What is your plan on converting the rear end to 5 bolt?

rodzilla67 · 03-10-2015, 09:35 PM

Quote:

Originally Posted by rusty18

Rodzilla67,

Lots of info on front changeout.

What is your plan on converting the rear end to 5 bolt?

I planned on changing the axles. I assume this is a reasonable method? Also still wondering if I can use c10 spindles on a c20?

**lolife99** · 03-10-2015, 09:50 PM

Quote:

Originally Posted by rodzilla67

I planned on changing the axles. I assume this is a reasonable method? Also still wondering if I can use c10 spindles on a c20?

Yes and No.
3/4 ton lower a--arms have a larger balljoint hole.
You will need 1/2 ton lower a-arms and you will have to switch to 1/2 ton balljoints and outer tie rods.
Simpler choice is to use the "3/4 to 1/2 ton CONVERSION spindles" offered by ECE.

**lolife99** · 03-10-2015, 09:51 PM

Quote:

Originally Posted by rodzilla67

Just wondering if I can use C10 spindles on a C20? Are they that different?

Was also looking at the possibility of:

http://www.ebay.com/itm/391054955572...%3AMEBIDX%3AIT

C20 spindles are TOTALLY DIFFERENT than the C10 version

**lolife99** · 03-10-2015, 09:52 PM

Quote:

Originally Posted by Mike C

As I commented in your other thread, ECE is the only company that will let you keep all the rest of your suspension stuff and run 5 lug brakes with their spindle.

Scroll down here and see the C20-C10 spindle.
http://earlyclassic.com/catalog.aspx...ry=New%20Items

And here is a good link that covers many of the questions you have.
http://67-72chevytrucks.com/vboard/s...d.php?t=662011

X2
Best option to convert an 8-lug truck to 5-lug

rodzilla67 · 03-10-2015, 10:14 PM

Ty Lolife. Awesome info!

goldenC20 · 05-08-2017, 08:59 PM

Quote:

Originally Posted by csfields

I went with a 6 inch rear drop and 4 inch front drop. Used two inch lowering blocks and four inch shorter springs on the rear along with a bent pan hard bard for clearance and a c notch. The front was 2.5 inch drop spindle and 1.5 inch shorter spring.

Where did you find the 2-inch lowering blocks and did they come as a kit with the longer u-bolts?

bbbc10 · 05-08-2017, 09:11 PM

Just use google man not that hard

**lolife99** · 05-08-2017, 09:20 PM

Quote:

Originally Posted by goldenC20

Where did you find the 2-inch lowering blocks and did they come as a kit with the longer u-bolts?

http://67-72chevytrucks.com/vboard/s...d.php?t=196457

http://67-72chevytrucks.com/vboard/s...d.php?t=454824

Here's a couple good threads to look at.
Member way2lo2 is a good source for lowering blocks and u-bolts.

csfields · 05-08-2017, 10:16 PM

Quote:

Originally Posted by goldenC20

Where did you find the 2-inch lowering blocks and did they come as a kit with the longer u-bolts?

I got mine from CPP. They did include the longer U bolts and nuts.

03-06-2015, 03:27 PM	#1
rodzilla67 Registered User Join Date: Mar 2015 Location: Calais, Maine Posts: 11	Lowering my 1970 C20 I am new to the board and have really enjoyed looking at everyones builds and the wealth of information found here. I am just starting a build on this truck and one of the first things I would like to address is lowering & converting to 5x5 lug and front Disc. I am hoping to drop front 5 1/2 " and possibly 7" in Rear. I have some questions maybe you all could help me with: Can I use a C10 Drop spindle kit on a C20? What would be best way to achieve this drop? Suggestions? Advice? Thank you in advance for any and all help.

03-06-2015, 03:35 PM	#2
hdff Registered User Join Date: Apr 2007 Location: pasadena,TEXAS Posts: 880	Re: Lowering my 1970 C20 welcome from TEXAS!!!!! i can't help ya with your drop question but you might post it the suspension section for more help. and also wanted to say __________________ 1971 Cheyenne SWB 402BB, 700R4, 3.73 posi, PS, PB, A/C, Tilt, Tach "Wanda" Don't argue with idiots, People watching may not be able to tell the difference... There's someone in my head........But it's not me...... cheap tricks thread great info here!! http://67-72chevytrucks.com/vboard/s...d.php?t=489394

03-06-2015, 03:40 PM	#3
rodzilla67 Registered User Join Date: Mar 2015 Location: Calais, Maine Posts: 11	Re: Lowering my 1970 C20 I agree on the pics, but unfortunately I live in Maine and we have had 127" of snow this year! Preparing for spring Sorry didnt see suspension thread.

03-06-2015, 04:12 PM	#4
csfields Registered User Join Date: Mar 2011 Location: Elizabethtown, Kentucky Posts: 322	Re: Lowering my 1970 C20 I went with a 6 inch rear drop and 4 inch front drop. Used two inch lowering blocks and four inch shorter springs on the rear along with a bent pan hard bard for clearance and a c notch. The front was 2.5 inch drop spindle and 1.5 inch shorter spring. __________________ Thanks, Casey 71 Chevy C-10 SWB 350/400 PS, PB The Build http://67-72chevytrucks.com/vboard/s...d.php?t=584045 The Brake Upgrade http://67-72chevytrucks.com/vboard/s...d.php?t=695699

03-06-2015, 04:17 PM	#5
hdff Registered User Join Date: Apr 2007 Location: pasadena,TEXAS Posts: 880	Re: Lowering my 1970 C20 snow? what is that.... lol we had a pretty cold morning this morning, got down to blustery 34, burrrrr __________________ 1971 Cheyenne SWB 402BB, 700R4, 3.73 posi, PS, PB, A/C, Tilt, Tach "Wanda" Don't argue with idiots, People watching may not be able to tell the difference...* There's someone in my head........But it's not me...... cheap tricks thread great info here!! http://67-72chevytrucks.com/vboard/s...d.php?t=489394

03-06-2015, 10:12 PM	#7
Stranny64 Registered User Join Date: Jul 2014 Location: Mora MN Posts: 172	Re: Lowering my 1970 C20 No 5 lug for me yet. I have 5/3 lowering so far. I used springs from GMC Paul's, relocated shocks and trac bar from CPP. Good luck!!! __________________ 1968 Custom Camper C/20, rebuilt original 327 with 350 hp., turbo 400 with shift kit, factory AC truck, original patina rust free paint from Oregon, 2/4 lowering springs + 1" blocks, GM 2500 8 bolt rally's with dually center caps with Firestone Destination 245/75-R16's. (My 50th birthday present from my wife!!!)

03-06-2015, 10:34 PM	#8
70cst Senior Member Join Date: Feb 2001 Location: New Madison, Ohio Posts: 21,373	Re: Lowering my 1970 C20 Hey rodzilla67 ... to the forums and from Ohio. I will move this to the "Suspension" forum where you might get addition help. __________________ A husband can be right...or...A husband can be happy. 67-72 Chevy and GMC Trucks...The Classic Truck for the Classic Folk. 1970 CST Two tone green, 402BB, 400 Automatic, Tach, Buckets, AC, AM-FM, Tilt, GM CB, GM 8 Tract, LWB, etc JOHN 17:3...The better side of "LIFE" Remember: Everyday is a good day...Some are just gooder!

03-06-2015, 10:52 PM	#9
Mike C Registered User Join Date: Dec 1999 Location: Austin, TX, USA Posts: 7,727	Re: Lowering my 1970 C20 Looks like you posted twice. http://67-72chevytrucks.com/vboard/s...d.php?t=662556 __________________ 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

03-07-2015, 10:10 AM	#11
Mike C Registered User Join Date: Dec 1999 Location: Austin, TX, USA Posts: 7,727	Re: Lowering my 1970 C20 As I commented in your other thread, ECE is the only company that will let you keep all the rest of your suspension stuff and run 5 lug brakes with their spindle. Scroll down here and see the C20-C10 spindle. http://earlyclassic.com/catalog.aspx...ry=New%20Items And here is a good link that covers many of the questions you have. http://67-72chevytrucks.com/vboard/s...d.php?t=662011 __________________ 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

03-08-2015, 08:58 PM	#13
rodzilla67 Registered User Join Date: Mar 2015 Location: Calais, Maine Posts: 11	Re: Lowering my 1970 C20 Just wondering if I can use C10 spindles on a C20? Are they that different? Was also looking at the possibility of: http://www.ebay.com/itm/391054955572...%3AMEBIDX%3AIT

03-09-2015, 04:19 PM	#15
rodzilla67 Registered User Join Date: Mar 2015 Location: Calais, Maine Posts: 11	Re: Lowering my 1970 C20 Tree-50, thank you so much for the links and tips. If I can figure out if I can use C-10 spindles on a C-20 I'll be ready to go! lol

03-10-2015, 08:19 PM	#16
rusty18 Registered User Join Date: Jan 2007 Location: Calgary Canada Posts: 2	Re: Lowering my 1970 C20 Rodzilla67, Lots of info on front changeout. What is your plan on converting the rear end to 5 bolt?

03-10-2015, 10:14 PM	#21
rodzilla67 Registered User Join Date: Mar 2015 Location: Calais, Maine Posts: 11	Re: Lowering my 1970 C20 Ty Lolife. Awesome info!

05-08-2017, 09:11 PM	#23
bbbc10 Diggin The SquareLife Join Date: Dec 2010 Location: garland,tx Posts: 1,933	Re: Lowering my 1970 C20 Just use google man not that hard



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