Cranking torsion bars - PerformanceTrucks.net Forums



Cranking torsion bars

Reply
 
Thread Tools Search this Thread
Old 10-26-2009, 06:15 PM   #1
Staging Lane
Thread Starter
 
Join Date: Mar 2009
Posts: 50
Thanks: 0
Thanked 0 Times in 0 Posts
Default Cranking torsion bars

How far can I crank the stock torsion bars on a Suburban 2500 before I get issues.
I put on a set of 265/75-16 with a Micky Thompson wheel that has a bit more offset and they slighty rub in the front.

Measuring from the wheel straight up to the wheel well the front was 1 3/8" lower than the back.
I cranked the torsion bar bolt 4 turns and now the front is 3/4" lower than the back. I noticed the driver side bolt was cranked tighter than the passanger side
Oldcrow is offline   Reply With Quote
Old 10-26-2009, 06:21 PM   #2
2nd fastest 5.3 ECSB
iTrader: (14)
 
trever1t's Avatar
 
Join Date: Oct 2005
Location: NorCal
Posts: 26,691
Thanks: 0
Thanked 0 Times in 0 Posts
Default

an inch shouldn't be an issue. Make sure you get an alignment.
trever1t is offline   Reply With Quote
Old 10-26-2009, 10:05 PM   #3
TECH Enthusiast
 
Kerr's Avatar
 
Join Date: Aug 2005
Location: VA
Posts: 729
Thanks: 0
Thanked 0 Times in 0 Posts
Default

you can go up quite a bit, but the ride sucks

We did the 2" leveling kit on my sububran to clear 255-85-16's on stock 16" wheels. no problems but the ride was crap. I thin switched to bead lock wheels and it rubs under full turn..

Some friends of mine have a race shop ( baja ) anyway they have sold a lot of the camali (sp) upper a arms for 2500 chevys. They said it would fix the feeling of the wheels falling off in pot holes.. I also have a bad pitman and idler arms..

In a nut hell you will loos the down travel by cranking the tbars...

post up some picts of the wheels and tires.
Kerr is offline   Reply With Quote
Old 11-01-2009, 10:55 PM   #4
On The Tree
 
Join Date: Oct 2009
Location: Pittsburgh, Pa
Posts: 185
Thanks: 0
Thanked 0 Times in 0 Posts
Default

put an air gun on the bolts and run them till they stop. I just did it last night on my hd and the alignment is PERFECT. Dont waste money on the alignment unless it already needs one before you crank the bars.

and yes the ride does get worse, more bouncy.
stranger ranger is offline   Reply With Quote
Old 11-02-2009, 01:12 AM   #5
11 Second Hall Moniter
iTrader: (22)
 
AKlowriderZ71's Avatar
 
Join Date: May 2008
Location: Wyoming
Posts: 11,633
Thanked 0 Times in 0 Posts
Default

Quote:
Originally Posted by stranger ranger View Post
put an air gun on the bolts and run them till they stop. I just did it last night on my hd and the alignment is PERFECT. Dont waste money on the alignment unless it already needs one before you crank the bars.

and yes the ride does get worse, more bouncy.
Definately do NOT take this advice. Any change in ride height will affect camber, caster, and toe angles on any GM IFS front suspension.
AKlowriderZ71 is offline   Reply With Quote
Old 11-02-2009, 09:26 AM   #6
2nd fastest 5.3 ECSB
iTrader: (14)
 
trever1t's Avatar
 
Join Date: Oct 2005
Location: NorCal
Posts: 26,691
Thanks: 0
Thanked 0 Times in 0 Posts
Default

trever1t is offline   Reply With Quote
Old 11-02-2009, 10:44 AM   #7
TECH Senior Member
iTrader: (79)
 
Join Date: Jun 2002
Location: League City, Tx
Posts: 5,167
Thanks: 0
Thanked 0 Times in 0 Posts
Default

you might want to look into getting a "leveling kit"

it comes with shock extenders, and new keys.

the keys are not really needed, but the shock extenders are.
Tootall is offline   Reply With Quote
Old 11-02-2009, 11:04 AM   #8
On The Tree
 
Join Date: Oct 2009
Location: Pittsburgh, Pa
Posts: 185
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Oldcrow,
i dont know your location, but if your in the pittsburgh area, doubt it, but come and check mine out. Bolts are bottomed out on mine, and 4 other hds we have at work. Not once did we have to get it aligned.

However, you dont have to take my advice, just do it for yourself and you'll see.
stranger ranger is offline   Reply With Quote
Old 11-06-2009, 02:02 PM   #9
TECH Enthusiast
 
Kerr's Avatar
 
Join Date: Aug 2005
Location: VA
Posts: 729
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Stanger ranger, your lucky lol... ever time ive moved mine it ate my tires up like crazy with out an alignment..
Kerr is offline   Reply With Quote
Old 11-06-2009, 05:23 PM   #10
Launching!
iTrader: (1)
 
Join Date: Jan 2007
Location: Moncton,N-B, Canada
Posts: 213
Thanks: 0
Thanked 0 Times in 0 Posts
Default

We do the 2500's about 2-3 a week.
You can lift about 2" higher than stock.
You need 2" keys and shock extenders.
But if you lift higher,the upper control arm will be too close at the stopper which will make it drive pretty bad and hard on ball joints.Another way is to use aftermarket upper control arms if you want to go 3".
Quite a few keys and shock brackets out there.
We use these at our shop.

You need an alignment after.

Last edited by trever1t; 11-06-2009 at 05:45 PM. Reason: NON_SPONSOR LINK REMOVED
motion427 is offline   Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
05 1500hd vehicle speed sensor problem RustyD 8-Lug Truck Performance 4 05-23-2016 08:04 PM
rear sway bar for 2002 RCSB Alco GM Drivetrain & Suspension 4 10-04-2015 07:58 AM
intermitent long crank SSpeeDEMONSS GMT 800 & Older GM General Discussion 6 10-03-2015 09:21 PM
LED light bar with an integrated GoPro carid Sponsor's Announcements, Sales, and Specials 0 10-01-2015 10:22 AM
Is this possible? My luck I'm assuming trxmxzx GM Drivetrain & Suspension 8 09-29-2015 08:42 AM


Tags
01, 2005, 2500, angle, back, bars, caster, change, crank, cranking, ford, front, longer, ones, ranger, shock, torsion, torsions

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 11:40 AM.