289 HiPo vs Shelby GT 350 Horse Power

For those who wonder how the venerable 289 HiPo specs out on an engine dyno, <i>Mustang Monthly</i> decided to find out. A fairly accurate "replica" 289 HiPo engine was built to put on a dyno to see if the factory rated 271 hp was developed...Then, they added the Shelby bolt-ons to see if the GT-350 version would deliver the 306 advertised horse power...To find out how this interesting dyno test turned out, you can read the entire article HERE.