Go Back   Ford F150 Forum - Community of Ford Truck Fans > Late Model F150s > Engine / Drivetrain Talk
Sign in using an external account
Register Forgot Password?


Reply
 
 
 
 
Thread Tools Search this Thread Display Modes
Old 03-24-2014, 10:42 PM   #1
Junior Member
 
Join Date: Jan 2013
Posts: 14
Mentioned: 0 Post(s)
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
Default 97 f150 5.4 4x4 questions

hi guys. got a question about my 4x4 system. my 97 f150, with a 5.4L, is my work truck. has a ford 9 inch in the back, and an ifs setup in the front, not sure what style diff it is. i do a ton of towing for work and recreational towing. recently I have noticed that my 4x4 high and low arent living up too my expectations.
my main problem is when i put it in 4x4 to go up my steep snowcovered driveway, i find halfway up if i slow down a bit when backing my trailer up, that when i give it a little more gas, one or two tires will start to spin. and i end up going nowhere.
so then ill try using 4x4 low, now i pretty positive 4x4 low works cause i can hear it engage. now once im engaged in low i put my trans back into gear and attempt to continue backing up. now when i start easing into the gas to get going. i can hear my engine rev up and not one tire moves until im over 3000rpm and at that point the tires immediately break free and spin, but not all 4 just two. usually the rear tires.
now to add some info. my tires are brand new goodyear wrangler a/t. and i do not just put the peddle to the floor and go. i do ease into it slowly.

so hers my question. what options do i have to lock my tires together so they have to move together?
posi lock diffs?
lsd?
front wheel lockers?
changing gear ratios?

thanks in advance for any help.
97FordBoy is offline   Reply With Quote
Old 04-04-2014, 10:24 AM   #2
Senior Member
5 Year Member
 
charliedyal's Avatar
 
Join Date: May 2009
Location: Tallahassee, Fl
Posts: 2,202
Mentioned: 26 Post(s)
Thanked 92 Times in 86 Posts
Feedback Score: 0 reviews
Default

First off, you have a 9.75 rear, not a 9". It must be a pretty heavy trailer if your revving to 3k before you move or the tires slip, unless your torque converter isn't locking up correctly. Installing a limited slip or locker in the rear end will help greatly as well as getting a higher ratio set of gears.(you have to change front and back) a LSD up front would help with traction in 4 wheel, but not necessary. Check your door sticker for the axle code. If its a letter and number, it already has a LSD rear. If a number & number, its an open diff. If it does have a factory LSD, you may just need new clutches installed in it.
charliedyal is offline   Reply With Quote
Old 07-20-2014, 09:23 PM   #3
Junior Member
 
Join Date: Jan 2013
Posts: 14
Mentioned: 0 Post(s)
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
Default

Thanks for your help, and sorry about the late reply
97FordBoy is offline   Reply With Quote
Old 07-20-2014, 10:05 PM   #4
Senior Member
5 Year Member
 
charliedyal's Avatar
 
Join Date: May 2009
Location: Tallahassee, Fl
Posts: 2,202
Mentioned: 26 Post(s)
Thanked 92 Times in 86 Posts
Feedback Score: 0 reviews
Default

Quote:
Originally Posted by 97FordBoy View Post
Thanks for your help, and sorry about the late reply
LOL. 4 months later?? What did you end up doing with it? And, your welcome.
charliedyal is offline   Reply With Quote
Old 07-27-2014, 11:14 PM   #5
Junior Member
 
Join Date: Jan 2013
Posts: 14
Mentioned: 0 Post(s)
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
Default

I havent done anything about it yet. I believe a huge part of my problem is the new tires i have on arent the greatest A/T tires. So im going to upgrade them.
I also went and looked, my axle code is 19, so based off what you have told me. I have an open diff. Which means im going to look into getting a lsd
97FordBoy is offline   Reply With Quote
The Following User Says Thank You to 97FordBoy For This Useful Post:
charliedyal (07-28-2014)
Old 07-27-2014, 11:14 PM
 
 
 
Reply


Tags
4x4, gear ratio, lsd, posi

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Join F150 Forum

 

The Mustang Source
All times are GMT -4. The time now is 07:10 PM.


Copyright 2006 - 20011 F150forum.com
This site is in no way affiliated with the Ford Motor Company.