I agree with the others about a lack of info.
The keys are to not overload either vehicle and balance your load.
It is likely that you are better off putting your heavier items in the bed, closer to the cab vs at the tailgate to balance the load.
2014 Volvo 630 Tandem 2016 Chevy 3500 DRW, crew cab
2016 Fuzion 325T, 675ah AGM, MSH 3012 inverter, 1400w Solar