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There's no need to spend extra money on rockers, as the ZZ383 crate motor even includes a complete set of 1.5:1 aluminum roller rockers.
Crate Engine Confessional - GM Performance Parts ZZ383 Dyno Test

 There's no need to spend extra money on rockers, as the ZZ383 crate motor even includes a complete set of 1.5:1 aluminum roller rockers.  View Related Article

 

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