L
ls1fun
GUEST
I know what the literature says. It also says the Trailblazer for 2003 now has the new 5300 Vortec V8 as an option and for 2003 it is an aluminum block, the first in the Vortec line. It doesn't make sense to me that they would make 2 different 5300 Vortec's. Does anyone here have any inside scoop and know for sure what the Av gets for 2003, the new one or the old one