What is the weight of a Chevy 230 straight six cylinder motor?

What I have found through my research on this subject is that the 1955 smallblock V8 265 was a triumph of engineering because it "weighed less than the contemporary chevy six" 235. The all cast iron 265 V8 was around 550 lbs, so let's say that makes the 235 more, about 575 lbs. Then a wiki article I read said the new 230 six in the early 60's was a lighter design than the old 235, so maybe it is a little less that the 265 smallblock, around 500-540 lbs. The thing about a V8 is that the block is more compact than the long straight six, as is the crank, so obviously there is savings of weight in this respect, to counter having "two more cylinders of head" between the two heads on a V8. The SOHC Pontiac 230 six just added aluminum housings above and to the side of the revamped 230 block and head, so I'm guessing the SOHC 230 was not superlight, again maybe 540 lbs. Everyone talked about the great handling of a Firebird Sprint or Tempest OHC, but I think that is compared to a heavier Pontiac V8. Chevy got their smallblock really light for what it was!