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Old 03-06-2015, 03:27 PM   #1
rodzilla67
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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.
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Old 03-06-2015, 03:35 PM   #2
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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

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cheap tricks thread great info here!! http://67-72chevytrucks.com/vboard/s...d.php?t=489394
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Old 03-06-2015, 03:40 PM   #3
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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.
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Old 03-06-2015, 04:12 PM   #4
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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.
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Old 03-06-2015, 04:17 PM   #5
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Re: Lowering my 1970 C20

snow? what is that.... lol we had a pretty cold morning this morning, got down to blustery 34*, burrrrr
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Don't argue with idiots, People watching may not be able to tell the difference...
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cheap tricks thread great info here!! http://67-72chevytrucks.com/vboard/s...d.php?t=489394
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Old 03-06-2015, 04:23 PM   #6
rodzilla67
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Re: Lowering my 1970 C20

Quote:
Originally Posted by csfields View Post
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?
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Old 03-06-2015, 10:12 PM   #7
Stranny64
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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!!!
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Old 03-06-2015, 10:34 PM   #8
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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.
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Old 03-06-2015, 10:52 PM   #9
Mike C
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Re: Lowering my 1970 C20

Looks like you posted twice.

http://67-72chevytrucks.com/vboard/s...d.php?t=662556
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Old 03-06-2015, 11:06 PM   #10
rodzilla67
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Re: Lowering my 1970 C20

Quote:
Originally Posted by 70cst View Post
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.
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Old 03-07-2015, 10:10 AM   #11
Mike C
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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
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Old 03-07-2015, 02:06 PM   #12
rodzilla67
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Re: Lowering my 1970 C20

Quote:
Originally Posted by Mike C View Post
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.
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Old 03-08-2015, 08:58 PM   #13
rodzilla67
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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
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Old 03-09-2015, 02:22 AM   #14
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Re: Lowering my 1970 C20

Quote:
Originally Posted by Mike C View Post
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/
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Old 03-09-2015, 04:19 PM   #15
rodzilla67
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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
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Old 03-10-2015, 08:19 PM   #16
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Re: Lowering my 1970 C20

Rodzilla67,

Lots of info on front changeout.

What is your plan on converting the rear end to 5 bolt?
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Old 03-10-2015, 09:35 PM   #17
rodzilla67
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Re: Lowering my 1970 C20

Quote:
Originally Posted by rusty18 View Post
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?
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Old 03-10-2015, 09:50 PM   #18
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Re: Lowering my 1970 C20

Quote:
Originally Posted by rodzilla67 View Post
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.
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Old 03-10-2015, 09:51 PM   #19
lolife99
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Re: Lowering my 1970 C20

Quote:
Originally Posted by rodzilla67 View Post
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
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Old 03-10-2015, 09:52 PM   #20
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Re: Lowering my 1970 C20

Quote:
Originally Posted by Mike C View Post
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
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Old 03-10-2015, 10:14 PM   #21
rodzilla67
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Re: Lowering my 1970 C20

Ty Lolife. Awesome info!
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Old 05-08-2017, 08:59 PM   #22
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Re: Lowering my 1970 C20

Quote:
Originally Posted by csfields View Post
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?
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Old 05-08-2017, 09:11 PM   #23
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Re: Lowering my 1970 C20

Just use google man not that hard
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Old 05-08-2017, 09:20 PM   #24
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Re: Lowering my 1970 C20

Quote:
Originally Posted by goldenC20 View Post
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.
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Old 05-08-2017, 10:16 PM   #25
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Re: Lowering my 1970 C20

Quote:
Originally Posted by goldenC20 View Post
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.
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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
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