Palm Beach Dyno and Signature Speed push the 991-hp C8 Corvette ZR1 to 1,170 hp with early tuning, downpipes, and MS109 fuel.

Starting engine dynamometer pulls at low rpm is hard on the dyno and hard on the engine. Today, engine dynamometer testing is an integral part of many HOT ROD engine buildups and product tests.

The first devotee we found was standing by the dyno with his 75 Pontiac Trans Am screaming on the rollers. We stepped back a bit when the Flowmasters bellowed as the redline approached and the engine ...