Please Help this vibration is driving me crazy!!

FastStang · 01-15-2002, 11:42 AM

I have an 86 turbo coupe which I converted to 5.0ho 5spd. I ran the stock rear until it took a dump at week ago. I picked up a 8.8 3:55 rear that my buddy ran in his mustang. So I installed the rear and I have had a wicked vibration ever since. I tried everything I could think of, rotating the driveshaft, transmission mount, rebalanced the driveshaft??? I now have no clue, the rear ran fine in my friends car, no why the vibration??please help

vande97 · 01-15-2002, 07:52 PM

Is the vibration at a certain speed or RPM??, If it is at a certain speed i would think maybe the drive shaft. I put new gears in my rear and had a terrible vibration at about 55 to 65 MPH, it felt like the whole car was going to fall apart. I had the stock drive shaft rebalanced and everthing and that helped a little but still it was there, so i finally took everyones advice and bought the FMS Aluminum drive shaft and it worked like a champ, just something was up with the stock one...go figure....good luck tho hope you figure it out!!!

poopstang · 01-15-2002, 08:54 PM

i have the same problem, soon as i put that 3.55 in the pig started shak'n like no tom.

01-15-2002, 11:42 AM	#1
FastStang Registered Member Join Date: Jun 1999 Location: Phila.pa USA Posts: 42	Please Help this vibration is driving me crazy!! I have an 86 turbo coupe which I converted to 5.0ho 5spd. I ran the stock rear until it took a dump at week ago. I picked up a 8.8 3:55 rear that my buddy ran in his mustang. So I installed the rear and I have had a wicked vibration ever since. I tried everything I could think of, rotating the driveshaft, transmission mount, rebalanced the driveshaft??? I now have no clue, the rear ran fine in my friends car, no why the vibration??please help __________________ 1990 Mustang GT, 3:73, off-road h-pipe,2 chamber flowmasters,hurst shorty,hypertech pullies,moroso cold air,ported and polished mass air, autometer guages,chrome ponies, lowered 2in.et 13.72 STOLEN april 28. never found Currently Primered 1986 t-bird, 89 5.0 h.o., 90' t-5, south side bars,1 1/2 phenloic spacer, pullies, moroso cold air,hurst shorty,MSD,secret cam,off-road, 2 chamber flows w/dumps. et 13.4

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01-15-2002, 07:52 PM	#2
vande97 Registered Member Join Date: Jan 2001 Location: okemos Posts: 205	Is the vibration at a certain speed or RPM??, If it is at a certain speed i would think maybe the drive shaft. I put new gears in my rear and had a terrible vibration at about 55 to 65 MPH, it felt like the whole car was going to fall apart. I had the stock drive shaft rebalanced and everthing and that helped a little but still it was there, so i finally took everyones advice and bought the FMS Aluminum drive shaft and it worked like a champ, just something was up with the stock one...go figure....good luck tho hope you figure it out!!!

01-15-2002, 08:54 PM	#3
poopstang Registered Member Join Date: Mar 2001 Location: palmbayFL Posts: 184	i have the same problem, soon as i put that 3.55 in the pig started shak'n like no tom.