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Vibration after gear install...finally found the culprit

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  • Vibration after gear install...finally found the culprit

    A long time ago, I posted a thread about vibration problems after I installed 4.10s. Well I finally found the culprit. The guy at the gear shop was pretty convinced that the problems were in the transmission, probably worn bearings. Well, I finally pulled the transmission and sent it to the shop. The splines on the main shaft and the 5th/6th gear were worn and had play in them. The new gears just magnified a problem already there. I thought I would share this with you all if you have similar problems after gear installs. I am looking forward to getting the clutch and tranny installed!
    '77 K5 rock-crawler project
    '79 T/A: WS6, 400 4sp, 40K miles; Completely stock and original
    '87 Lifted 3/4 ton Suburban (Big Blue) plow truck
    '94 Roadmaster Wagon (The Roadmonster) 200,000 miles and still going
    '97 T/A: (SLP 1LE Suspension, SB, & sfc(s), Loudmouth); 4.10s; B&M Ripper; R/A Hood; ZR1s
    My daily drivers: '06 Jeep Liberty CRD (wife); '01 Yukon Denali XL (me); '03 Stratus Coupe (me)

    I predict future happiness for Americans if they can prevent the government from wasting the labors of the people under the pretense of taking care of them.
    Thomas Jefferson

  • #2
    Interesting...how many miles do you have on that tranny??
    Joe K.
    '11 BMW 328i
    '10 Matrix S AWD
    Previously: '89 Plymouth Sundance Turbo, '98 Camaro V6, '96 Camaro Z28, '99 Camaro Z28, '04 Grand Prix GTP

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    • #3
      Originally posted by Joe K. 96 Zeee!!
      Interesting...how many miles do you have on that tranny??
      A little over 98,000. The rest of the tranny was perfect. I changed out and toped off the fluid regularly. It was kinda strange. I kept the main shaft and the gear so I was able to witness the play & wear on the splines. I have driven the car on a lot of long 1,000+ trips at sustained speeds over 90mph.
      '77 K5 rock-crawler project
      '79 T/A: WS6, 400 4sp, 40K miles; Completely stock and original
      '87 Lifted 3/4 ton Suburban (Big Blue) plow truck
      '94 Roadmaster Wagon (The Roadmonster) 200,000 miles and still going
      '97 T/A: (SLP 1LE Suspension, SB, & sfc(s), Loudmouth); 4.10s; B&M Ripper; R/A Hood; ZR1s
      My daily drivers: '06 Jeep Liberty CRD (wife); '01 Yukon Denali XL (me); '03 Stratus Coupe (me)

      I predict future happiness for Americans if they can prevent the government from wasting the labors of the people under the pretense of taking care of them.
      Thomas Jefferson

      Comment

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