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Discussion Starter · #1 ·
I have a pair of BB square ports cast date D 26 72 #3994026, curious to know the CC size, and application.
Thanks.....
 

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Thanks for the replies...The last linked page must be in error due to showing a 118 cc chamber as closed. These must be some rare heads being late production and only 188 sets installed on '71 Corvettes, maybe a handful more on the few '71 LS6 Chevelles. They must have been an over the counter sale or on a crate LS6.
 
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