You're a little light on most everything.
24v loaded head without rockers, etc: 165lbs.
Crank: 126lb
damper: 26lb
My 12v with just damper and twins nosed out at 1150. No accessories and electric waterpump.
24v shortblock (no head, tappet cover, or timing gear housing) was 619 sitting on a pallet. Add 165 for head, 10 for head bolts, 10 for rockers, 5 for tappet cover, 10 for timing gear housing and you are at about 820 for the longblock (no pump, exhaust, turbo, injectors, lines, balancer) maybe 175 for those items. You are looking at 1000 lbs with no accessories.