Regular readers know we often run several Xtreme Energy hydraulic-roller camshafts from Comp Cams on our 347 dyno mule. Besides running well, those cams are good choices for a test engine because many ...

Besides easily made horsepower, a 347's longer stroke means it makes power a little differently. At its most basic, a longer stroke is simply more displacement, and displacement means torque.

An engine's valvesprings play a critical role in its performance, yet those incorrectly chosen for a given application can cause hobbyists to unknowingly point blame in another direction if an engine ...