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 ...

When HPP left Racekrafters' shop the last time, The Mule performed quite admirably with the out-of-the-box Edelbrock cylinder heads installed. It produced 502.8 hp and 570.7 lb-ft of torque. Going ...

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.

Roller cam retrofit kits have become the go-to upgrade for just about every classic American V-8. It makes sense: Roller cams allow steeper ramp rates and way more flexibility in cam profile design ...