Testing the SP383 small-block crate engine at Westech Performance where it made 437 hp and 444 lb-ft of torque right out of the crate.

This YouTuber dyno-tested a 50cc V-12 to see if these ... but weak even for such a small engine. By comparison. 49cc moped ...

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! Related Videos 0:13 ...