GM Performance Parts ZZ383 Dyno Test - Crate Engine Confessional
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The ZZ383 came with a stout camshaft that worked well in both naturally aspirated and supercharged configurations; however, if the funds permit, an extra $246 for a Comp Cams blower grind is money well spent. We saw a gain of 11 hp on the motor alone, while comparing the 6-inch crank and 3.33-inch blower pulley setup showed an increase of 32 hp and 9 lb-ft. View Related Article
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