1. To qualify for the Chevrolet member-only incentive during the Costco Auto Program Event, you must: (1) be a current Costco member by September 30, 2020; (2) register with Costco Auto Program online or through its call center to receive a certificate with your unique promotion code; (3) present your certificate and unique promotion code to a Chevrolet dealer at time of visit; (4) take ... Dec 22, 2020 · Here are the top Chevrolet Nova listings for sale ASAP. Check the carfax, find a low miles Nova, view Nova photos and interior/exterior features. Search by price, view certified pre-owned Novas, filter by color and much more. They will interchange. the only head component that is different is the casting itself. ZZ502 has 280cc intake runner. ZZ572/620 has a 310cc intake runner. sames valves, same springs, same retainers, same install heights. The factory cam for the ZZ502 is 527/544 lift. Feb 06, 2011 · CHEVY V-8 Crankshaft Journal Sizes Here's a list of Chevy V-8 crankshaft journal sizes. All journal sizes are given in "STANDARD" sizes. Your crankshaft may have been cut down in size previously by a machine shop. Make sure your crank will work in the block you have. Blocks were made for each crank main journal size.