Driveshaft or Rear-end

UglyFast88 · 06-03-2003, 09:29 PM

Hi all-

Got my car together, and it runs incredible. Now I have a question... I'm getting what seems to me to be a foreign vibration through the shifter (Steeda Tri-Ax) starting at about 2100-2300 rpm. I also am getting (sometimes) a shuddering (best way to describe it) when in reverse, and rolling backward, kind of like a kitchen chair "stutters" across linoleum. (like that description?!?)

Last year, I put a set of 3.73's in, and it had the vibration, some howling at higher speeds, but not the stuttering. I also have the original driveshaft in car, with about 150,000 strong. The vibration is bad enough, for instance, to bubble tranny fluid out of the overflow when the tranny is filled, (like after my install- filled to the rim!) but not major enough to cause a real leak once the level gets to the proper level for operation.

Questions are, has anyone run into this? And do you think I'll grenade my tranny driving it like this for a few weeks? It's really not that bad, but I don't want to hurt my car. I'm just not sure how much of it is theshaft, the gears, maybe the T-5, or even the motor or exhaust. My exhaust contacts the frame under normal operation, and that vibrates, too!

I have a T-5 rebuild kit, and an aluminum driveshaft to go into the car in the next few weeks, but what do you think about the gears? Would gears do this- or am I just more worried t I need to be?

Thanks for your help!

Coupe50h · 06-04-2003, 12:37 AM

Drive the car until you feel the vibration, push in the clutch and if the vibration is there at a certain vehicle speed, (not rpm) than it is the d/s or rear.
I suggest you get an aluminum d/s, it cured all my vibration problems, also, check bell housing bolts, mine backed out before, causing an rpm related vibration.
hope that may help.

If your on a budget, replace the u-joints, if it's not the problem, its a piece of mind, and you wont be spending too much.

UglyFast88 · 06-04-2003, 09:12 AM

Thanks, I'll try that. I want to say that it only does it when in gear, (yikes! T-5!) but I'm not sure. I already got the aluminum driveshaft and the D&D rebuild kit for the T-5, just need to install it.

Thoughts on the "shuddering" thing?

Thanx again

Coupe50h · 06-04-2003, 07:16 PM

I wouldnt mess with rebuilding the t-5, you have to set your preloads and stuff, unless you have experience?
jmo, but unless the t-5 wont shift, or grinds real bad, i wouldnt drop it out just yet.

06-03-2003, 09:29 PM	#1
UglyFast88 Registered Member Join Date: Apr 2002 Location: Fordland Posts: 117	Driveshaft or Rear-end Hi all- Got my car together, and it runs incredible. Now I have a question... I'm getting what seems to me to be a foreign vibration through the shifter (Steeda Tri-Ax) starting at about 2100-2300 rpm. I also am getting (sometimes) a shuddering (best way to describe it) when in reverse, and rolling backward, kind of like a kitchen chair "stutters" across linoleum. (like that description?!?) Last year, I put a set of 3.73's in, and it had the vibration, some howling at higher speeds, but not the stuttering. I also have the original driveshaft in car, with about 150,000 strong. The vibration is bad enough, for instance, to bubble tranny fluid out of the overflow when the tranny is filled, (like after my install- filled to the rim!) but not major enough to cause a real leak once the level gets to the proper level for operation. Questions are, has anyone run into this? And do you think I'll grenade my tranny driving it like this for a few weeks? It's really not that bad, but I don't want to hurt my car. I'm just not sure how much of it is theshaft, the gears, maybe the T-5, or even the motor or exhaust. My exhaust contacts the frame under normal operation, and that vibrates, too! I have a T-5 rebuild kit, and an aluminum driveshaft to go into the car in the next few weeks, but what do you think about the gears? Would gears do this- or am I just more worried t I need to be? Thanks for your help! __________________ '88 Speed Density LX 1998 Explorer motor 1.7 Roller Rockers GT-40 lower ported & polished Cobra upper intake MAC CAI Aluminum Pullies FRPP P-Shortys Cop car cam (to insult) Competition Engineering F/R adjustables Flowmasters New black carpet and... '84 Racin' Tempo seats! Cars' best run in 2002 with stock 150,000 mile 302 with pullies, exhaust and roller rockers only... 13.27 at 101.5 mph

06-04-2003, 12:37 AM	#2
Coupe50h Registered Member Join Date: Aug 2002 Location: SanAntonio, Tx Posts: 957	Drive the car until you feel the vibration, push in the clutch and if the vibration is there at a certain vehicle speed, (not rpm) than it is the d/s or rear. I suggest you get an aluminum d/s, it cured all my vibration problems, also, check bell housing bolts, mine backed out before, causing an rpm related vibration. hope that may help. If your on a budget, replace the u-joints, if it's not the problem, its a piece of mind, and you wont be spending too much. __________________ X-Texas highway patrol ssp 1990 coupe - exploder Gt-40 iron heads, Explorer intake, 19 lber's. E-cam. crane 1.7 rollers. 190fp. 75mm maf. 65mm tb, tubular subframe connectors, mac cai, Asp crank pulley, T-5, king cobra clutch, flowtech 1-5/8 unequals, mac X-pipe Frpp driveshaft, lakewood Lca's. race weight 3,160 12.69 @ 107.35, 1.71 60' 26x8.5 drag's 3.90 gear 13.20 @ 106.91 - 235/60/15 firestones 2.3 60' 3.27 gear

06-04-2003, 09:12 AM	#3
UglyFast88 Registered Member Join Date: Apr 2002 Location: Fordland Posts: 117	Thanks, I'll try that. I want to say that it only does it when in gear, (yikes! T-5!) but I'm not sure. I already got the aluminum driveshaft and the D&D rebuild kit for the T-5, just need to install it. Thoughts on the "shuddering" thing? Thanx again __________________ '88 Speed Density LX 1998 Explorer motor 1.7 Roller Rockers GT-40 lower ported & polished Cobra upper intake MAC CAI Aluminum Pullies FRPP P-Shortys Cop car cam (to insult) Competition Engineering F/R adjustables Flowmasters New black carpet and... '84 Racin' Tempo seats! Cars' best run in 2002 with stock 150,000 mile 302 with pullies, exhaust and roller rockers only... 13.27 at 101.5 mph

06-04-2003, 07:16 PM	#4
Coupe50h Registered Member Join Date: Aug 2002 Location: SanAntonio, Tx Posts: 957	I wouldnt mess with rebuilding the t-5, you have to set your preloads and stuff, unless you have experience? jmo, but unless the t-5 wont shift, or grinds real bad, i wouldnt drop it out just yet. __________________ X-Texas highway patrol ssp 1990 coupe - exploder Gt-40 iron heads, Explorer intake, 19 lber's. E-cam. crane 1.7 rollers. 190fp. 75mm maf. 65mm tb, tubular subframe connectors, mac cai, Asp crank pulley, T-5, king cobra clutch, flowtech 1-5/8 unequals, mac X-pipe Frpp driveshaft, lakewood Lca's. race weight 3,160 12.69 @ 107.35, 1.71 60' 26x8.5 drag's 3.90 gear 13.20 @ 106.91 - 235/60/15 firestones 2.3 60' 3.27 gear

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
new rear end	fordkid68	Classic Mustangs	18	11-24-2009 08:05 PM
want rear disk without changing overall length of rear....please help!!!	dragstang86	Windsor Power	1	07-31-2003 06:32 PM
installing cobra rear in my LX...picked up a totaled 93 limited edition	dragstang86	Windsor Power	1	05-26-2003 11:23 AM
Rear end Noise or Tranny Noise???	jz_mustang50	Windsor Power	0	10-02-2001 05:21 PM
New rear end, stock driveshaft???	BennyBoy	Windsor Power	5	07-02-2001 07:00 PM