Holley’s Giveaway Twin-Supercharged LS Makes 1,057HP On Pump Gas

Holley’s Giveaway Twin-Supercharged LS Makes 1,057HP On Pump Gas

The Holley giveaway engine made it onto Prestige Motorsports dyno in preparation for being awarded to a lucky sweepstakes winner.

With a peak of over 1,100 horsepower and almost 950 lb-ft, someone is in for a treat

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