All of the World blocks I have weighed were 310-317. The old Mega block I had in the Cuda when it was a Hemi was 317. FWIW my low deck KB with big cam bore etc was 127, my current Predator deal the tell deck raised cam 60mm core we have not weighed but I believe the shipping container said 166.

"I am not ashamed to confess I am ignorant of what I do not know."

"It's never wrong to do the right thing"