F1TE engine block
 

OK, everyone put ur thinking caps on....... just out of curiosity my engine builder weighed a F1tE block from an Explorer. and guess what? it is 11 pounds heavier than an E7 5 liter block. the main webs appear to be thicker. 11 pounds of metal is alot, is the F1TE block the same as a motorsports sportman block?