At a quick look the weights for the new blocks listed seem to be correct. I am wondering though if the weight listed for the Y Block is correct on the Mummert site. The Y Block is shorter but has a deck height almost the same as a BB Chev, they weigh in at 250lbs-260lbs and with the extended skirts on the Y I couldn't imagine it to be light. To put it in perspective even the new 302w high performance block weighs in at 163lbs and they are a tiny block in comparison. I don't want to say anything is wrong as I have never weighed one but it doesn't seem to add up when the long block is listed at 535lbs. I would have guessed closer to 255lbs than 155lbs. Does anyone else have thoughts or knowledge on this?