Is the aluminum 4.6 block really that much lighter than the iron? I thought people always said like 68-75 pounds or something. If thats true how can the DOHC 4.6 complete engine be 75 pounds lighter with 2 more cams, way bigger heads, aluminum two piece intake instead of plastic, more timing chains, etc? Somebody needs to weigh the blocks to see what the real difference is.
I have weighed a 302 shortblock and a barely 302 block on my shipping scale
Stock 302 Shortblock with crank, rods pistons but no cam, no timing chain, no timing cover and no oil pan was 184.85 pounds.
Stock 302 Bare Block w/ Main Caps, 125.70 LBS