Engaging on the road - Off-Road Forums & Discussion Groups
GM Standard IFS Trucks & SUV's All discussion of full sized IFS Trucks, SUV's to include Suburban

LinkBack Thread Tools Display Modes
post #1 of (permalink) Old 06-25-2001, 10:03 AM
Posts: n/a
Engaging on the road

Why is it, when you engage your front axle on dry pavement it "binds" up? I know your not supposed to do it, I'm just wondering if all our fullsize Chevy's do this? Or, do any of you have different gear ratios so that you can run like an AWD? What about the Fulltime 4X4 guys?

Sponsored Links
post #2 of (permalink) Old 06-25-2001, 03:02 PM
Shorts's Avatar
Join Date: Oct 1999
Location: Texas
Posts: 6,137
Thanks: 0
Thanked 0 Times in 0 Posts
Re: Engaging on the road

because the front and rear driveshafts are turning at the same time....so, all 4 wheels are turning at the same speed and rotation...when you turn, each tire is taking a shorter or longer path in the turn. that causes bindage on paved roads....the tires stick to the road so the drivetrain binds.

on gravel/dirt/mud...i.e. slick stuff, the tires are allowed to slip and slide and still turn at the same speed, so there is no binding in the drivetrain.

you want the same gear ratio in the front and rear....or have no more than 10% difference i believe.... 4.09s/4.10s, 3.54s/3.55s .....etc..

there are some full time tcases in the older trucks, and some newer trucks are starting to do this....an example, dodge dakotas/durangos can be equipped with the NP231(off the top of my head), which is a full time tcase. more importantly, these fulltime tcases are NOT single speed like a lot of these yuppy SUVs that only see paved roads.

a down side to full time 4wd is lower mpg, and possibly faster/uneven tire wear.

<font color=blue>Shorts</font color=blue> &lt;-- its not what you think...and don't ask what it is [img]/wwwthreads_images/icons/smile.gif[/img]
Shorts is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Off-Road Forums & Discussion Groups forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

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 On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome