Indy Cylinder Heads built this 500ci all-aluminum big-block wedge for PHRs Project Valiant and in this dyno test it made 657hp at 6,100 rpm and 662lb-ft of torque at 4,500 rpm.

Listen and watch one more time as Indy’s Russ Flagle pitches the virtues of the Indy Cylinder Head blown Hemi crate engine in this video from the 2017 Mopar Nats.

Thanks to companies like Indy Cylinder Head and Prestige Motorsports ... The same goes for cylinder heads, with the most ...