V8 means it has 8 cylinders in V format, Toyota Lc/cygnus is having V8 engine since 1998 but since 2008 when 200 series came locally people started to refer it was v8.
The 200 series has V8 engine in both petrol and diesel. 2008 Model has 4.7L 2uz-fe engine and in 2009+ models it has 4.6 1ur-fe and diesel one is 1vd-ftv.
2008-9 Models are GX, AX, AX-G and ZX came in later 2009....