Author
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Topic: Vibration issue with Foxbody
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East Bay 50
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Member # 8081
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posted
Whenever I get over 80mph I get alot of vibration from my center console where my shifter is. the faster I go the worse it gets. anyone have any idea what might be causeing this?
-------------------- Kurgan tuned stroked and blown 347 foxbody. boost nukka!
Posts: 2699 | Registered: Dec 2007
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92_5.0
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Member # 7624
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posted
bad U joint, bad tranny mount, loose driveshaft, bad motor mounts, un-balanced driveshaft.
-------------------- Infineon/Sears point? same difference! 11.8 @ 115 mph @ Sac Raceway 411 rwhp 402 trq (old set up) 540 rwhp 517 rwtrq (new set up) ET's to come
Posts: 1629 | From: bay area | Registered: May 2007
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East Bay 50
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Member # 8081
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posted
quote: Originally posted by 92_5.0: bad U joint, bad tranny mount, loose driveshaft, bad motor mounts, un-balanced driveshaft.
basically I should take it to a shop huh? lol!
-------------------- Kurgan tuned stroked and blown 347 foxbody. boost nukka!
Posts: 2699 | Registered: Dec 2007
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92_5.0
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Member # 7624
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posted
if you have a floor jack and a set of jack stands and dont mind turnin a wrench, those are all simple things you can do yourself to save you money, but its up to you man lol. Start by checking the driveshaft bolts, if any are loose, put a dab of loctite (every bolt) on the threads before re-installing and you should be good. If its the tranny mount, just un bolt the mount, jack up the tranny and swap in the new one, pretty easy if you have the tools and space to do it all. More than likely the problem is one of the two.
-------------------- Infineon/Sears point? same difference! 11.8 @ 115 mph @ Sac Raceway 411 rwhp 402 trq (old set up) 540 rwhp 517 rwtrq (new set up) ET's to come
Posts: 1629 | From: bay area | Registered: May 2007
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Rigo5.0
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Member # 5247
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posted
quote: Originally posted by 92_5.0: if you have a floor jack and a set of jack stands and dont mind turnin a wrench, those are all simple things you can do yourself to save you money, but its up to you man lol. Start by checking the driveshaft bolts, if any are loose, put a dab of loctite (every bolt) on the threads before re-installing and you should be good. If its the tranny mount, just un bolt the mount, jack up the tranny and swap in the new one, pretty easy if you have the tools and space to do it all. More than likely the problem is one of the two.
+1
More than likely it's your driveshaft bolts that are loose. Tighten those pups up.
-------------------- 91 5.0 [331|T56] 87 Grand National 02 Z06 08 Challenger SRT8 13 Shelby GT500 00 Lightning 14 Camaro SS
Posts: 1454 | From: Kansas City | Registered: Jan 2005
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Venomousnotch
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Member # 8695
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posted
Sounds like the rubber isolator is coming out of the harmonic balancer....LMK
-------------------- 🏁•2004 MUSTANG SVT COBRA•🏁
"WHEN THE WHINING STARTS,IT MEANS JUSTICE IS ABOUT TO BE SERVED"..
Posts: 7605 | From: *NORTHERN*KILLA4NIA* | Registered: Oct 2008
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East Bay 50
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Member # 8081
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posted
alright, I'll check the bolts tommorow and post up if they are loose.
-------------------- Kurgan tuned stroked and blown 347 foxbody. boost nukka!
Posts: 2699 | Registered: Dec 2007
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CobraCoupe
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Member # 7233
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posted
I had the same problem in my gt when I first got it, had a vibration at that speed and notice the axle flange was bent on the dyno so I thought that was it changed it, axle bearings and new axles same thing swapped out driveshaft for another same thing, new spicer ujoints in my other driveshaft same thing, ended up getting a FMS aluminum driveshaft and to my surprise vibration gone smooth like butter on the freeway, also on my old coupe had a weird vibration around 2200-2400 rpms in 5th and I put one in and vibration was gone. I would try that
Posts: 663 | From: Hayward | Registered: Nov 2006
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