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Polycrystalline materials exhibit complex mechanical behavior influenced by microstructural features like grain size, morphology, and crystallographic orientation distribution. A multiscale approach is necessary to capture this behavior accurately across different scales of deformation and loading conditions. Full-field crystal plasticity models like the elasto-viscoplastic Fast Fourier Transform (EVPFFT) models enable high fidelity simulations by considering the distinct deformation of constituent grains based on their crystal orientation, morphology, and interactions with neighboring grains. In this paper, we present a novel strategy for microstructure sensitive simulations of full-scale applications by coupling an EVPFFT model with an explicit hydrodynamics finite element (FE) solver in the open-source Fierro code. Both codes are designed for parallel computing and are optimized for various computing architectures. To reduce computational costs, EVPFFT calculations can be performed after multiple time increments in explicit FE simulations. A new extrapolation procedure is proposed to enhance accuracy, particularly in accounting for changes in loading direction. The accuracy of the developed multiscale approach is demonstrated through simulations of tension, compression, and shear tests, as well as Taylor impact experiments, showcasing its ability to predict complex deformation and microstructural evolution in polycrystalline materials under high-strain-rate conditions.