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long tube headers vibrating on frame between 80-85

robertww1
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robertww1 Enthusiast

robertww1

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i have a 2018 silverado 1500 with the 5.3 and speed engineering LT headers and at a higher rpm or between 80-85 i can feel my headers touching and vibrating on my frame. has anyone else had this issue? i read one forum where if you replace the motor mounts the problem is fixed 

robertww1 Enthusiast

robertww1

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On 6/21/2022 at 3:07 AM, CajunFries said:

Give it some heat from a torch and massage it a bit. 
image.thumb.jpeg.969ab3ad2d2bb3ea3852f3726187061a.jpeg

so you have the same issue on the driver side that i do. i guess im gonna have to take them off this weekend and do this 

robertww1 Enthusiast

robertww1

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On 6/20/2022 at 7:18 PM, robertww1 said:

i have a 2018 silverado 1500 with the 5.3 and speed engineering LT headers and at a higher rpm or between 80-85 i can feel my headers touching and vibrating on my frame. has anyone else had this issue? i read one forum where if you replace the motor mounts the problem is fixed 

also Speed Engineering's line is "replace motor mounts" a crock of ****** that is 

CajunFries Enthusiast

CajunFries

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3 hours ago, robertww1 said:

so you have the same issue on the driver side that i do. i guess im gonna have to take them off this weekend and do this 

Yup. Just beat it a lil at a time. Make sure you get some new OEM gaskets. 

shakenfake Senior Enthusiast

shakenfake

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20 hours ago, robertww1 said:

also Speed Engineering's line is "replace motor mounts" a crock of ****** that is 

Because that normally is the problem. 

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