Notices

Drivetrain Slack

Thread Tools
 
Search this Thread
 
Old Aug 15, 2011 | 08:16 AM
  #1  
eric72xlt's Avatar
eric72xlt
Thread Starter
|
Freshman User
Joined: Jun 2011
Posts: 42
Likes: 0
Question Drivetrain Slack

I have a 72 f100, 2wd 390, c6, 9 in rear two piece drive shaft. When you try to accelerate hard from a stop, it seems like something is slipping, then after maybe half a second it seems to grab. It makes a loud clunk noise and takes off. Thought maybe the trans is slipping, but if you hold your foot on the brake and give it gas it doesn't seem to slip at all. Just starts spinning the tires. Any ideas???
 
Reply
Old Aug 15, 2011 | 09:10 AM
  #2  
Mark Kovalsky's Avatar
Mark Kovalsky
Frmr Ford Trans Engr
25 Year Member
Liked
Community Favorite
Top Answer: 3
Joined: Aug 1999
Posts: 24,698
Likes: 2,620
From: SE Florida
Grease the slip yoke in the driveshaft.
 
Reply
Old Aug 15, 2011 | 09:21 AM
  #3  
eric72xlt's Avatar
eric72xlt
Thread Starter
|
Freshman User
Joined: Jun 2011
Posts: 42
Likes: 0
Originally Posted by Mark Kovalsky
Grease the slip yoke in the driveshaft.
Forgive me for being dumb, but are you talking about the end that goes into the trans?
 
Reply
Old Aug 15, 2011 | 11:06 AM
  #4  
Mark Kovalsky's Avatar
Mark Kovalsky
Frmr Ford Trans Engr
25 Year Member
Liked
Community Favorite
Top Answer: 3
Joined: Aug 1999
Posts: 24,698
Likes: 2,620
From: SE Florida
That one might have some of the problem, but most of it will be in the slip in the rear shaft.
 
Reply
Old Aug 15, 2011 | 11:13 AM
  #5  
eric72xlt's Avatar
eric72xlt
Thread Starter
|
Freshman User
Joined: Jun 2011
Posts: 42
Likes: 0
Ok. I'll check that out. Thanks
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
SuperDutyScaler
1999 - 2016 Super Duty
12
Aug 20, 2013 09:48 AM
ronclark
2004 - 2008 F150
6
Jan 15, 2012 04:50 PM
LarryH1
1967 - 1972 F-100 & Larger F-Series Trucks
8
Jan 19, 2011 12:09 AM
rsdjcarter
1961 - 1966 F-100 & Larger F-Series Trucks
12
Jun 3, 2009 05:52 AM




All times are GMT -5. The time now is 02:26 AM.

story-0
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

By Joe Kucinski | 2026-05-18 19:34:33


VIEW MORE
story-1
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

And it might be even better than that.

By Brett Foote | 2026-05-18 19:26:42


VIEW MORE
story-2
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

Slideshow: Does lowering an F-150 Lobo RUIN the ride quality?

By Michael S. Palmer | 2026-05-18 19:20:37


VIEW MORE
story-3
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE
story-4
10 Best Ford Truck Engines We Miss the Most!

Slideshow: The 10 best Ford truck engines we miss the most.

By Joe Kucinski | 2026-05-12 13:09:47


VIEW MORE
story-5
2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Slideshow: first look at the 810 hp 2026 Shelby F-150 Off-Road!

By Brett Foote | 2026-05-12 12:50:07


VIEW MORE
story-6
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

Slideshow: Everything You Need to Know about the 2027 Super Duty Carhartt Package!

By Michael S. Palmer | 2026-05-07 17:51:06


VIEW MORE
story-7
10 Most Surprising 2026 Ford Truck Features!

Slideshow: 10 most surprising Ford truck options/features in 2026.

By Joe Kucinski | 2026-05-05 11:17:22


VIEW MORE
story-8
Top 10 Ford Trucks Coming to Mecum Indy 2026

Slideshow: Here are the top 10 Fords coming to Mecum Indy 2026.

By Brett Foote | 2026-05-04 13:49:49


VIEW MORE
story-9
5 Best / 5 Worst Ford Truck Wheels of All Time

Slideshow: The 5 best and 5 worst Ford truck wheels of all time

By Joe Kucinski | 2026-04-29 16:49:01


VIEW MORE