Seller notes

OUR BADDEST BIG-BLOCK STREET ENGINE 19331581Proving the adage there’s no replacement for displacement, the ZZ572/620 is the ultimate expression of Chevrolet Performance’s engineering capability, wrapped up in a soul-stirring combination of performance and attitude. We build the ZZ572/620 with huge 4.560-inch bores and a 4.375-inch stroke to help it deliver 621 hp and a stunning 645 lb.-ft. of grunt!Strength comes from a latest-generation tall-deck block casting with four-bolt main caps and a...

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