When I go to pull out from a complete stop the truck acts like its in a strain until it goes into overdrive

 

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[QUOTE=bulletnose;753582]When I go to pull out from a complete stop the truck acts like its in a strain until it goes into overdrive the truck is bone stock it has only had muffler cut off. It acts like converter want lock up
J

 

put a tc lock switch on it. the strain feeling is the loose tc. i would do a tc lock switch and a 4k gsk.. the 4k will fuel it harder and eliminate the strain feeling.