GM Drivetrain & Suspension Chassis | Transmission| Driveshaft | Gears/Rear End/Differential | Traction Aids

Vibration at 60mph, 4l80e swap, tried everything

Old May 26, 2016 | 11:40 AM
  #11  
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Originally Posted by 1bad2k
You lifted the tail of the trans 3.5"? Man, that seems crazy but if it works. How did this affect the motor mounts? ..... I have the same issue as well with my 4x4 rcsb 4l80e swap. I was planning to shim my transcript up, but I was expecting to be in the .25-.5" range.
Yeah I'm pretty sure my motor mounts are hating life, ha-ha. But to have no drive line vibes is what I'd rather have. I had a buddy who had a lifted truck with bogger tires on it and it would vibrate the entire truck. He'd always have to re tighten all kinds of nuts and bolt because of the vibes. So I don't want any kind of vibes, especially if it's a safety issue.
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Old Jun 2, 2016 | 11:31 AM
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Looks like I gave you guys bad info. I made a trans mount spacer about 3.5" tall, however if you minus the stock 2" tall trans mount I actually raised my trans 1.5". Sorry guys.

Tgui, did you ever get your drive line issues resolved?
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Old Jun 2, 2016 | 11:36 AM
  #13  
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Originally Posted by Jetn3
Looks like I gave you guys bad info. I made a trans mount spacer about 3.5" tall, however if you minus the stock 2" tall trans mount I actually raised my trans 1.5". Sorry guys.

Tgui, did you ever get your drive line issues resolved?
1.5'' sounds more sane!

No, no fixes yet. I've been tied up every weekend.. .and will be tied up this weekend as well. Uhgg.
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Old Jun 2, 2016 | 11:48 AM
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Sounds like you need to tie wifey up for a change
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Old Jun 2, 2016 | 02:25 PM
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So are yall saying I should measure where my 4l60e is sitting before i swap the 4l80e.
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Old Jun 2, 2016 | 02:46 PM
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Originally Posted by willhorne22
So are yall saying I should measure where my 4l60e is sitting before i swap the 4l80e.
Any base line dimensions will be helpful as a starting point
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Old Jun 2, 2016 | 03:27 PM
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Originally Posted by willhorne22
So are yall saying I should measure where my 4l60e is sitting before i swap the 4l80e.
Get the angles of the driveshaft for sure.
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Old Jun 2, 2016 | 03:27 PM
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Originally Posted by Wolftrk99
Sounds like you need to tie wifey up for a change
Who says I don't already?
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Old Jul 25, 2016 | 03:42 PM
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I still have vibration after raising trans up 6/10 inch. Keep going up? Any thoughts?
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Old Jul 25, 2016 | 04:41 PM
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