15.7-liter, tri-turbo engine built for a speedboat, but never used, by high-performance engine builder Tyson Garvin. And he just put it on a dyno.

Westech Performance dyno tests a 355-inch blown small-block Chevy engine build that makes over 600 hp at and a ton of torque across the whole rpm band! Related Videos 4:06 ...

On this episode of Hemmings Garage sponsored by POR-15 and presented by US Radiator, we spend some time on the engine dyno. It’s no secret GM’s GEN III/IV LS engine platform is good.

This YouTuber dyno-tested a 50cc V-12 to see if these ... but weak even for such a small engine. By comparison. 49cc moped engines generally produce 2-3 hp, though admittedly that's being done ...

Westech Performance dyno tests a 383-inch stroker budget small-block pump-gas engine topped with three two-barrel Rochester carbs on a custom tunnel ram and makes over 400 hp!