• Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech

Clunk From 5-Speed Trans...

  • Thread starter Thread starter LASTFOX
  • Start date Start date Jul 10, 2004

LASTFOX

Member
Jul 21, 2003
105
0
16
RI
Jul 10, 2004
#1
  • Jul 10, 2004
  • #1
I’ve searched the forums and haven’t found anyone out there with this exact same issue, so please don’t flame me. I’m just wondering if the problem I have is inherent/typical of the Fox Body.

In preparation for my Kenne Bell 1500 SC, I decided to stiffen up the body-flex typical of a Fox/Conv chassis. Less flex, more power to the ground, right? I just recently installed Energy Suspension Trans/Motor/X-Member Poly Bushings. I secured the trans/x-member first to minimize the shifting of driveline components, and then moved up to the engine mounts. Test drove and noticed an improved response from a dead stop! I then installed Hotchkis rear trailing arms along w/KYB shocks and axle dampers. Test drove and car corners excellent. Now, this is want I notice and I’m not sure if it’s because of the stiffer then stock components I installed or is normal.

If I let off the gas and tap it lightly and/or press clutch in/out, in any gear while moving, I feel/hear a driveline clunk. I have checked the following and here’s what I’ve found.

1. My U-Joints and bolts are tight. Frt. & Rear, no slop.
2. My Rear-End Pinion is tight, no whine/cluck.
3. But, when I turn the drive shaft, while the car is in gear, I hear/feel a CLUNK directly below the shifter, more so at the output shaft of the Trans. I am positive that the noise is in the Trans, because if with one-hand I hold the yoke directly on the O/P of Trans and with the other hand on the drive shaft, I DO NOT get any noise. So the play is between the O/P yoke and O/P shaft splines in the Trans.

Is this normal?
And, do I notice it more now because I’ve stiffened up the driveline components?
Thanks in advance for any help!
 

jpctln

New Member
Jun 1, 2004
198
0
0
StL, MO
Sep 1, 2004
#2
  • Sep 1, 2004
  • #2
Brought this thread back. I have the same exact problem...If it is a problem.
 

LASTFOX

Member
Jul 21, 2003
105
0
16
RI
Sep 2, 2004
#3
  • Sep 2, 2004
  • #3
I learned to live with it, if it truely is a problem. Everythings tight underneath, so it's probably the the inherent FOX body clunk...Next week I'm having 3:55's put in, so if somethings out of the ordinary then I'm sure we'll notice it.
 
I

iwashmycar

20+ Year Stangneter
Apr 7, 2004
1,236
1
39
Columbus, Ohio
Sep 2, 2004
#4
  • Sep 2, 2004
  • #4
I get it too....
 

jpctln

New Member
Jun 1, 2004
198
0
0
StL, MO
Sep 2, 2004
#5
  • Sep 2, 2004
  • #5
Bumper-ump-a-lump.

I guess it's just natural play in the gears/differential then.
 
F

fost9508

New Member
Aug 28, 2004
131
0
0
Sep 2, 2004
#6
  • Sep 2, 2004
  • #6
This may or may not be what you are talking about. I haven't done as thorough of a check but have noticed the same symptoms.



http://forums.stangnet.com/showthread.php?t=497174
 

LASTFOX

Member
Jul 21, 2003
105
0
16
RI
Sep 2, 2004
#7
  • Sep 2, 2004
  • #7
Thanks Fost...but my tranny/crossmember mounts are new(Urethane). Thats probably the reason I have noticed the Clunk more so than with the OE Rubber (POS) Mts.
 
You must log in or register to reply here.

Similar threads

C
Drivetrain T-5 transmission issue
  • Ch3No2
  • Jul 11, 2025
  • Fox 5.0 Mustang Tech
Replies
3
Views
350
Fox 5.0 Mustang Tech Jul 18, 2025
2000xp8
Drivetrain 83’ Glx convertible C5 Trans help!
  • JacksonJared2113
  • Dec 25, 2025
  • Fox 5.0 Mustang Tech
Replies
2
Views
335
Fox 5.0 Mustang Tech Dec 26, 2025
JacksonJared2113
S
Drivetrain 8.8 Pinion and 302 rear main seal leaks after replacing. 93 5.0 with t-5
  • Steigy4827
  • Jun 23, 2025
  • Fox 5.0 Mustang Tech
Replies
10
Views
618
Fox 5.0 Mustang Tech Apr 1, 2026
Steigy4827
S
A
2001 Mustang GT, scorched metal smell and noise from trans/diff?
  • AndyE2255
  • Dec 1, 2025
  • SN95 4.6L Mustang Tech
Replies
4
Views
416
SN95 4.6L Mustang Tech Dec 28, 2025
gkomo
3
Eight inches is enough for me...
  • 351MooseStang
  • Nov 27, 2025
  • 1974 - 1978 Mustang II Talk & Tech
Replies
5
Views
515
1974 - 1978 Mustang II Talk & Tech Mar 2, 2026
Bullitt347
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?