While the design changes were obvious and the flow numbers looked promising, the bottom line is how they stack up in power production on the dyno. We already had a fresh '71 440 Six Pack motor on the ...
According to Chrysler, more than three million 383s and million 440s were produced between 1959 and 1978, when big-block production ended. Chevy seems to pump out that many small-blocks in a year.
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