427 Chevy Mystery Motor Built By Smokey Yunick Gets Dyno Tested!
MotorTrend
MotorTrend
  • 6 months ago
HOT ROD convinces Mystery Motor owner Tom McIntyre to bring his 52-year old prototype 427ci Chevy big-block engine built for NASCAR racing to the engine dyno. We spin the 427 to more than 6
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