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  #1  
Old 09-20-2004, 01:59 AM
roadgrime roadgrime is offline
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ok so I have been trying to track down a vibration i have on acceleration only. anyhow this weekend i pulled the rear drive shaft. and I layed it next to my spare.
now I had an older post where where the front drive shaft grenaded and I found my spare front drive shaft was an inch shorter than what came of my parts rig.

for those of you that dont know. my rig is a 79 wt with 401 th400 and bw1339

the parts rig was a 76 wagoneer with 401 th400 and bw1339

anyhow i layed my rear drive shaft next to my spare and found my spare is longer by a couple inches... WTF?







SO whats going on. everything i have read seen and imagined says these fricken things should have been the same since the drive train down to the D44's is the same?

[ September 20, 2004, 08:00 AM: Message edited by: roadgrime ]
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Old 09-20-2004, 02:00 AM
River Beast River Beast is offline
 
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could me modified by previous owner...

[ September 20, 2004, 08:01 AM: Message edited by: River Beast ]
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  #3  
Old 09-20-2004, 02:01 AM
roadgrime roadgrime is offline
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the one at the top pf the PIC (shorter ) is from the 79 wt

the bottom one (longer) is from the 76 wagoneer
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Old 09-20-2004, 02:03 AM
roadgrime roadgrime is offline
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RB thought about that but I dont see any signs nor reasons for having a shorter one on there except to bind up the drive train. although i suspect this is why i felt the drive shaft is too short for a 3 inch lift althouogh most everyone said they never had an issue with the drive shaft up to 3-4 inches
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Old 09-20-2004, 02:18 AM
hagar hagar is offline
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the 76-79 V8 shafts should be the same, according to the parts book
the six cyl shaft is different number
wonder if one of those shafts is a 258 auto shaft?
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Old 09-20-2004, 02:20 AM
River Beast River Beast is offline
 
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it is very odd to see this.. but ONE of the shafts is either modified.. or swapped with the wrong length shaft from something else...as there is no differences in the two FSJ's you pulled them from...

[ September 20, 2004, 08:20 AM: Message edited by: River Beast ]
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Old 09-20-2004, 02:32 AM
roadgrime roadgrime is offline
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yea I find it odd that both the front and rear drive shafts on the 79 were different lengths compared to the 76 parts. anyone got the demensions of what they should be? I couldnt find them listed in the FSM

[ September 20, 2004, 08:32 AM: Message edited by: roadgrime ]
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  #8  
Old 09-20-2004, 04:49 AM
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jode jode is offline
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Roadgrime - I think I stil have the rear D-shaft from that old 79 Chero we parted out if you need more driveshafts to play with
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Old 09-20-2004, 05:01 AM
roadgrime roadgrime is offline
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yea that I may need at least to figure out which one is correct
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  #10  
Old 09-20-2004, 06:59 AM
JeepKahn JeepKahn is offline
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Maybe the differance is from wheelbase differance between chero and wag, wt vs NT, and if the WB is the same, maybe the differance is in axle location compared to tcase, maybe the differance is that on NT both axles are farther back relative to the tcase, hence the shorter frt and longer rear...I'm pretty sure that's the case thinking back to some rigs I parted out...
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Old 09-20-2004, 07:13 AM
jeepguzzi jeepguzzi is offline
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Wags and Chero's have the same wheelbase/frame/differential. I would think that maybe hagar is right. The shorter shaft used to be behind a 258 powered rig.
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Old 09-20-2004, 12:11 PM
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Crazy_Jeepman Crazy_Jeepman is offline
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V8 and I6 were two different length driveshafts I would guess thats the case with the tow pictured as it looks about right
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Old 09-20-2004, 02:56 PM
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mabey, since yours is a 79, witch never came with a 401, was originaly a 258 rig, and someone swaped it to v-8 power. ?? leaving the tranny and its location untouched????

I know when I switched to a manual tranny that my old qtrac rear driveshaft was too short, So I have to have one froma J-10 shortend to fit. Mabey the longer one came from a manual equiped rig?

Was the slip part of the driveshafts at the center of their travel when you removed them?
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