Why no L35 in 1970?

[Jeff H]

It really seems like they wanted to consolidate options down to a Rochester carbed hydraulic lifter engine and a Holley carbed solid lifter engine for each line. When the 454 became available they dropped the 396. And do you think they bored the 396 .030 over so it would be 402 and therefore the "big block" would still be larger than the soon to be released 400 "small block"? I seem to remember reading about the bigger bore helping to pass emission's easier but we may never really know why.