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However, users online have reported that GM Parts Direct once offered a conversion kit that allowed the use of a 502 big block in place of the stock 454 in 1991-1993 C-10-through-30-Series Chevy ...
Chevy's 502-cubic-inch crate engine is available as HT502, 502 HO, ZZ502/502, or SP502/605 options. As a result, the 502 big block offers a range of horsepower ratings.
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3 Of The Biggest Chevy Crate Engines Ever Built - MSN
Chevy's 502-cubic-inch crate engine is available as HT502, 502 HO, ZZ502/502, or SP502/605 options. As a result, the 502 big block offers a range of horsepower ratings.
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