The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > General Truck Forums > Suspension

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 06-14-2013, 01:29 PM   #1
bohmankid
Registered User
 
bohmankid's Avatar
 
Join Date: Nov 2012
Location: Salt Lake City, UT
Posts: 520
lower control arms ground clearance

For you static drop guys, what would be the best 5-6" drop combo with maximum clearance for the lower control arms?

My truck currently has 3" djm spindles, and stock coils cut. About a 5-6" drop. The control arms are only an inch or two from the ground. Any recommendations?
bohmankid is offline   Reply With Quote
Old 06-15-2013, 09:45 AM   #2
SCOTI
Registered User
 
SCOTI's Avatar
 
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 22,066
Re: lower control arms ground clearance

Quote:
Originally Posted by bohmankid View Post
For you static drop guys, what would be the best 5-6" drop combo with maximum clearance for the lower control arms?

My truck currently has 3" djm spindles, and stock coils cut. About a 5-6" drop. The control arms are only an inch or two from the ground. Any recommendations?
For additional clearance, you need to raise the x-member & inner a-arm pivot points. The options are:
  • replacing it w/an aftermarket set-up
  • sectioning/notching an OE unit
  • 'Z-ing' the front clip/rails
__________________
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.
SCOTI is offline   Reply With Quote
Old 06-15-2013, 10:16 AM   #3
Dano69c10
Senior Member
 
Dano69c10's Avatar
 
Join Date: Jan 2005
Location: Ontario, Kali
Posts: 2,427
Re: lower control arms ground clearance

I have to second what Scoti says.

Easiest is aftermarket crossmember, like a Porterbuilt unit. $$$

Cheapest is a pancaked stock xmember. You can gain 1.5" of clearance and still use your stock steering/suspension. Any more than 1.5" you're going to have to fab up an r&p set-up.
__________________
'69 Fleet

It ain't yours, if you didn't build it!
Dano69c10 is offline   Reply With Quote
Old 06-15-2013, 10:32 AM   #4
SCOTI
Registered User
 
SCOTI's Avatar
 
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 22,066
Re: lower control arms ground clearance

Another possible option would be aftermarket a-arms. I believe units like Porterbuilts offer additional ground clearance. Not as much clearance as when raising the pivot points, but when used in conjunction w/say the notched x-member it could offer more.

One would have to sit down & figure the 'cost vs clearance' to see what works best for their budget.
__________________
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.
SCOTI is offline   Reply With Quote
Old 06-15-2013, 12:38 PM   #5
cdowns
Senior Member
 
cdowns's Avatar
 
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
Re: lower control arms ground clearance

taller tires give more lower control arm clearance
__________________
71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane

MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF

DONT BELIEVE EVERYTHING YOU THINK

TAKE MY ADVISE;I DON'T USE IT ANYWAY
cdowns is offline   Reply With Quote
Old 06-17-2013, 11:10 AM   #6
blazins10
Registered User
 
blazins10's Avatar
 
Join Date: Apr 2010
Location: vancouver wa
Posts: 181
Re: lower control arms ground clearance

i did a 2 inch section on my factory crossmember without replacing any steering parts
Posted via Mobile Device
__________________
///Relaxed Atmosphere
blazins10 is offline   Reply With Quote
Old 06-17-2013, 12:18 PM   #7
SCOTI
Registered User
 
SCOTI's Avatar
 
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 22,066
Re: lower control arms ground clearance

Quote:
Originally Posted by blazins10 View Post
i did a 2 inch section on my factory crossmember without replacing any steering parts
Posted via Mobile Device
You modified the steering as well then?
__________________
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.
SCOTI is offline   Reply With Quote
Old 06-17-2013, 01:05 PM   #8
blazins10
Registered User
 
blazins10's Avatar
 
Join Date: Apr 2010
Location: vancouver wa
Posts: 181
Re: lower control arms ground clearance

raised steering box and idler up 3/4 inch
Posted via Mobile Device
__________________
///Relaxed Atmosphere
blazins10 is offline   Reply With Quote
Old 06-17-2013, 02:04 PM   #9
Dano69c10
Senior Member
 
Dano69c10's Avatar
 
Join Date: Jan 2005
Location: Ontario, Kali
Posts: 2,427
Re: lower control arms ground clearance

Quote:
Originally Posted by blazins10 View Post
raised steering box and idler up 3/4 inch
Posted via Mobile Device
Really?
Didn't affect the tie rod, center link, ball joint angles?
__________________
'69 Fleet

It ain't yours, if you didn't build it!
Dano69c10 is offline   Reply With Quote
Old 06-17-2013, 02:26 PM   #10
blazins10
Registered User
 
blazins10's Avatar
 
Join Date: Apr 2010
Location: vancouver wa
Posts: 181
Re: lower control arms ground clearance

ive done many of them , and dont really see any side effects
if u have bags it tends to toe out at full lift but u dont drive like that so....
ive owned 3 trucks ive done it to including a 90 burban i put over 100k pulling a trailer
and the new owner is still driving it
Posted via Mobile Device
__________________
///Relaxed Atmosphere
blazins10 is offline   Reply With Quote
Old 06-19-2013, 12:06 AM   #11
wraprail
Registered User
 
wraprail's Avatar
 
Join Date: Sep 2010
Location: Lake Havasu City Arizona
Posts: 863
Re: lower control arms ground clearance

If it tends to toe out at full lift then it has what's called Bump steer.
This can be dangerous and should be avoided.
Posted via Mobile Device
__________________
wraprail is offline   Reply With Quote
Old 06-19-2013, 12:09 AM   #12
blazins10
Registered User
 
blazins10's Avatar
 
Join Date: Apr 2010
Location: vancouver wa
Posts: 181
Re: lower control arms ground clearance

I don't drive any of my lowered trucks 10-12 inches off the ground
So not really to concerned about it
Posted via Mobile Device
__________________
///Relaxed Atmosphere
blazins10 is offline   Reply With Quote
Old 06-19-2013, 12:16 PM   #13
chevyrestoguy
Registered User
 
chevyrestoguy's Avatar
 
Join Date: Mar 2005
Location: apple valley, ca
Posts: 2,670
Re: lower control arms ground clearance

Z'ing the chassis the cheapest method that gains the most clearance. The cost is essentially the material for the boxing plates and gussets, and many of us have those pieces in our scrap pile. If the cuts are placed correctly, the radiator, steering box, and steering linkage all remain in the stock location. I went up 2" and forward 1" to center the wheels in the fender openings.

Z'ing is the cheapest, but it will require the most labor. You have to take into consideration the cutting, welding, and fabrication labor. You will also have to take into consideration the mods you have to do to the stock inner fenders if you decide to run them them. I'm a regular guy, and I don't own a chassis shop, so I don't put a dollar figure to my labor.
__________________
Check out my latest endeavor:
https://roundsixpod.com

My build threads:
'55 Chevy: http://67-72chevytrucks.com/vboard/s...d.php?t=247512

'64 C-20: http://67-72chevytrucks.com/vboard/s...d.php?t=446527
chevyrestoguy is offline   Reply With Quote
Old 06-19-2013, 12:40 PM   #14
tinydb84
Registered User
 
tinydb84's Avatar
 
Join Date: Jul 2009
Location: San Jose Ca
Posts: 2,871
Re: lower control arms ground clearance

I got a quote from a reputable shop to Z my truck (with the engine out-I'm swaping it anyway) for $675. He said another $200 or so if I wanted all the steering stuff done. I might do the steering myself so for 675 and 2-3 inches of drop (or clearance) isnt bad.
__________________
David
Used parts build: http://67-72chevytrucks.com/vboard/s...d.php?t=638991
My brother's Nova: http://www.67-72chevytrucks.com/vboa...d.php?t=727985
Rear suspension rework: http://www.67-72chevytrucks.com/vboa...d.php?t=750557
Instagram: myfabguy
tinydb84 is offline   Reply With Quote
Old 06-19-2013, 05:04 PM   #15
xabichin67
Registered User
 
Join Date: Oct 2007
Location: Galt Ca.
Posts: 98
Re: lower control arms ground clearance

Quote:
Originally Posted by blazins10 View Post
raised steering box and idler up 3/4 inch
Posted via Mobile Device
Wouldn't it be better to raise the steering up the same distance as the section. Just curious as I have a 2" sectioned cross member and getting ready to put it in and raise the steering.
xabichin67 is offline   Reply With Quote
Old 06-19-2013, 05:57 PM   #16
SCOTI
Registered User
 
SCOTI's Avatar
 
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 22,066
Re: lower control arms ground clearance

Quote:
Originally Posted by xabichin67 View Post
Wouldn't it be better to raise the steering up the same distance as the section. Just curious as I have a 2" sectioned cross member and getting ready to put it in and raise the steering.
It would be but I'm betting clearance plays a BIG part in how much things can be raised.
__________________
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.
SCOTI is offline   Reply With Quote
Old 06-19-2013, 08:22 PM   #17
blazins10
Registered User
 
blazins10's Avatar
 
Join Date: Apr 2010
Location: vancouver wa
Posts: 181
Re: lower control arms ground clearance

yes it would 3/4 is max without notching into frame and will still need to mod the tops of the control arms at the bushings and weld a ear into the frame for the upper box bolt and notch the upper control a for steering shaft clearance
Posted via Mobile Device
__________________
///Relaxed Atmosphere
blazins10 is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 11:08 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com