LTR_FINDER (Xu & Wang, 2007) could be one of options. In addition, one related paper (Chuong, et al, 2013) for your information.
Xu, Z. & H. Wang (2007) LTR_FINDER: an efficient tool for the prediction of full-length LTR retrotransposons. Nucleic Acids Res., 35, W265.
Chuong, E. B., M. A. K. Rumi, M. J. Soares & J. C. Baker (2013) Endogenous retroviruses function as species-specific enhancer elements in the placenta. Nature Genetics, 45, 325.