[Smallblock454]

My box was in the workshop.

Got new DMF, clutch and IMS bearing.

Since than i have engine vibrations starting at around 2 to 2.5 rpm upwards. And they are getting worse.

Yesterday when cold starting the car i've got a rattle noise for 2 to 3 seconds. Sound like a timing chain was banging against the engine housing. At first sight to me that means a problem with the chain tensioners.

Is it possible that that damn workshop has interchanged the 3 chain tensioners (so they are not in there original position) and that is causing the engine to vibrate at higher rpms?

Thanks, Markus