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 > 47 - Current classic GM Trucks > The 99-06 GMT800 Chevy and GMC Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 11-15-2017, 03:53 PM   #1
kennyhammond
Registered User
 
Join Date: Nov 2010
Location: Texas
Posts: 237
2002 single cab leveling question

Bought this truck as a work truck ... 2002 single cab stepside no level of anything and it say about 3 inch difference from front to back ...installed a set of leveling lift keys and then tightend all the way it's is an 1 inch difference now ... Is that normal or am I off on something .. Only thing I do know is driver side bushing on cross member for torsion bars is bent ...rear leaf work he looks to have a block but don't know if it is stock or after market ...will get a picture soon ..planning to run 305/55r20. Have 305/50r20 it's what's came with the truck when I bought it
kennyhammond is offline   Reply With Quote
Old 11-16-2017, 02:12 PM   #2
lowrollin70gmc
Too many projects
 
lowrollin70gmc's Avatar
 
Join Date: Mar 2004
Location: Fargo, ND land of the flat hills
Posts: 1,132
Re: 2002 single cab leveling question

The lifting keys can vary based on how worn your stock torsion bars are, even if they advertise 1-3 inches of lift. If there is a block on the back, that is not stock and likely why you can’t get it level with only keys in the front.

Post up some pictures for better answers. Also, how do the current tires fit? The ones you want are about 33” tall, current are 32”, and the stock tires were 31.6”, so not a huge difference (0.7” difference in radius from stock, 0.5” from current).

The other confounder is the wheels you’re running, as backspacing makes a difference in what fits.
__________________
Andrew
84 GMC C1500 SWB 6.2 Diesel/700R4/3.42 "Grandpa's odd duck"
70 GMC C1500 LWB My first truck: shaved, bagged, and more: the lowrollin70gmc
68 K20 Suburban 12V Cummins/NV5600/NP205/D60/11.5AAM 3.73s "Dakota Cadillac"
63 Chevy II Nova Coupe 250 I6/T56/4.56s "Economy car"
53 Willys Wagon 350/NV4500/BW4401/HP D44/9inch
30 Model A 90 4RUNNER 2 Door 3.0/5spd/4x4 16 Focus ST
lowrollin70gmc is offline   Reply With Quote
Old 11-16-2017, 03:16 PM   #3
kennyhammond
Registered User
 
Join Date: Nov 2010
Location: Texas
Posts: 237
Re: 2002 single cab leveling question

I know the key slots that the bars for in where tight and not bent..I will check the bars for being straight thank you on that ...the rear leaf are on about a 2 I ch block will measure as well... Rims are a set of 20 inch gmc wheels looks good. The Tires did rub slight ... Don't think a 12.50 will fit so figuring a 305/55r20 would be the biggest I could fit ...though about a 295/60r20 would be near a 34 x11.50. Thank you to everyone who has helped and have advice btw
kennyhammond is offline   Reply With Quote
Old 11-16-2017, 03:18 PM   #4
kennyhammond
Registered User
 
Join Date: Nov 2010
Location: Texas
Posts: 237
Re: 2002 single cab leveling question

They are about the 2008 Yukon model. W5306MS
kennyhammond is offline   Reply With Quote
Old 11-16-2017, 06:28 PM   #5
lowrollin70gmc
Too many projects
 
lowrollin70gmc's Avatar
 
Join Date: Mar 2004
Location: Fargo, ND land of the flat hills
Posts: 1,132
Re: 2002 single cab leveling question

Quote:
Originally Posted by kennyhammond View Post
I know the key slots that the bars for in where tight and not bent..I will check the bars for being straight thank you on that ...the rear leaf are on about a 2 I ch block will measure as well... Rims are a set of 20 inch gmc wheels looks good. The Tires did rub slight ... Don't think a 12.50 will fit so figuring a 305/55r20 would be the biggest I could fit ...though about a 295/60r20 would be near a 34 x11.50. Thank you to everyone who has helped and have advice btw
The bars should still be straight, but over time they are a spring and will loose some of their original spring rate and won’t be able to be cranked as high.

But you won’t be able to level it with keys if there is a 2 inch block on the back, that’s not stock. And with the keys cranked all the way up, you’re going to see faster suspension and cv shaft wear. Also, if you post some pictures it would be easier to tell what exactly is going on with your rig.

A 305/55/20 specs near the exact same dimensions as a 33x12.5r20. It all comes down to your wheel’s backspacing. A wheel with less backspacing will be more likely to rub when turned. If your wheels are stock 20” GMC wheels your backspacing should be fine, but pics would help. I personally run 255/85r16s (~33x10)on 16x6.5 w/ 4.5” backspacing on my 2004 Burb and I’m only about 1.5” higher than stock. They would’ve likely fit at stock height as well, but I wanted the mild gain in ground clearance.
__________________
Andrew
84 GMC C1500 SWB 6.2 Diesel/700R4/3.42 "Grandpa's odd duck"
70 GMC C1500 LWB My first truck: shaved, bagged, and more: the lowrollin70gmc
68 K20 Suburban 12V Cummins/NV5600/NP205/D60/11.5AAM 3.73s "Dakota Cadillac"
63 Chevy II Nova Coupe 250 I6/T56/4.56s "Economy car"
53 Willys Wagon 350/NV4500/BW4401/HP D44/9inch
30 Model A 90 4RUNNER 2 Door 3.0/5spd/4x4 16 Focus ST
lowrollin70gmc is offline   Reply With Quote
Old 11-17-2017, 04:54 PM   #6
kennyhammond
Registered User
 
Join Date: Nov 2010
Location: Texas
Posts: 237
Re: 2002 single cab leveling question

I have 2008 GMC Yukon time on it 20 inch Figure a 305/55r20 will look pretty good Any suggestions
kennyhammond is offline   Reply With Quote
Old 11-17-2017, 08:27 PM   #7
kennyhammond
Registered User
 
Join Date: Nov 2010
Location: Texas
Posts: 237
Re: 2002 single cab leveling question

Thank you. For the help and information. Will look at both sizes the 305. And 33 I will try to get. A picture of the block what is my option for he block btw
kennyhammond is offline   Reply With Quote
Old 03-17-2018, 02:13 AM   #8
kennyhammond
Registered User
 
Join Date: Nov 2010
Location: Texas
Posts: 237
Re: 2002 single cab leveling question

The block is aftermarket btw. But leveled out nice it’s 1/2 inch difference from front to back. Going with stock 20” rims and 33x12.50r20 with a 1/3 inch spacer to stick them out a small amount
kennyhammond is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

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 10:01 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2018, vBulletin Solutions Inc.
Copyright 1997-2013 67-72chevytrucks.com