[rsimoes]

Are we talkin about just the block or a complete engine?

I have heard that it is 125 pounds lighter, 150 lbs lighter, 250 and 300 lbs lighter. . I'm not sure we're comparing apples to apples. . .

I wanted to know the total weight of the complete engine, iron block with aluminum heads weight difference. . .

Ford Racing could not answer the question and neither could Roush Racing, in fact neither one was friendly on the phone.

(comparing the Roush 427R (351W block) vs the Ford Crate 514 (429/460 block)