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We open it up to see what makes the new Gen IV small-block tick
By Barry Kluczyk
When it was introduced for the 1997 model year in the then-new fifth-generation Corvette, the Gen III small-block was indeed a revolution. It was the first redesign of the basic small-block architecture since Chevrolet introduced it in 1955.
Although it retained the characteristic 4.4-inch bore centers, there was nothing else really the same between the old and the new. Not surprisingly, there was some initial trepidation on the part of enthusiasts. After all, several generations had grown up with the ubiquitous small-block Chevy. Its performance, reliability and affordability were the measures against which other engines were compared.
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