Thought I’d share a couple of sweet dyno pulls with you guys. If you don’t want an eargasm, then move along.

This first car is powered by a Pat Williams Racing (PWR)-built 3.4L naturally-aspirated flat six. It’s campaigned in PCA Club Racing in the GT-4 class, which it won last year.

This next car is powered by a PWR-built 3.4 as well, but this one has two turbos strapped onto it. It put down an impressive 592 whp. Factor in a 15% driveline loss, and that’s 682 at the crank.