I have not found anything listing 400 heads with 2.02 valves so I cant say they did or did not have them , but it looks like they did not .
Looks like you could get points and hei in "73 Mortec"s 400 block casting codes: 330817.....400...72-80...2 bolt 3951509....400...70-71...4 bolt 3951509....400...74-80...2 bolt 3951509....400...74-80...2 bolt 3951511....400...70-73...2&4 bolt
I have a 4 bolt 400 under a work bench that I am sure is not a 1970 casting . It was a 71 or 72 cuz I could have sold it for big bucks last summer to a guy wanting a 1970 casting date for his restore project .
Don"t believe everything you see on the internet , I see lots of conflicting info by reputable sites (mortec ,Nasty,others) not that they are trying to be misleading .
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