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870 hooley street avenger

  1. ZZ502 BBC crate with 870 Holley

    Anybody else running the ZZ502 deluxe chevy crate motor, it comes with a 870 CFM Street Avenger Carburetor, electric choke and vacuum secondaries. I noticed I wasn't getting much of a boost from the secondaries , so I did the paperclip test, checked for binding and then went to the lightest...