Partial deliveries of pulley/belt combinations barely adequate

How to do it better and how some road racers could raise their game. By Alfie Bilk: For the adept machinist, there’s no miraculous skill required to make adequate custom pulleys. What’s much more useful, however, particularly for engine building shops, is being able to acquire pulley combinations—both accurately... read more

How to add 5hp to the race engine throughout the rev range:

Each generation of induction technology continually evolves; here is the latest. Measuring two inches deep, Mike Androwick of Mike’s Racing Heads has introduced a new lightweight four-hole tapered spacer to suit all 4150-style mounting flanges. It accommodates a wide range of competition engines. It is also said to fulfill... read more

New circle track blocks and useful deck-height guides

By Archie Bosman: Over the years most of us have toyed with the notion of acquiring a desirable engine or two and sometimes, foolishly, we’ve asked the question, “Which one would you recommend?” Of course the inevitable answer comes: “It depends on what you’re trying achieve.” Often that answer... read more

Rebirth of the 8.1L Vortec and advancement of Merlin IV

By Titus Bloom:   Raise questions about the prospects of GM’s 8.1 liter V8 Vortec engine block and you will quickly learn that currently there is no direct-replacement block available. The engine has been extinct since 2010. But at the 2016 PRI show held in Indianapolis in December, World... read more

Seeking permanent end to exhaust gasket leaks?

By Freddie Heaney:   How do you compete on the national stage—how do you rise from obscurity if you don’t advertise? Engine builders do it by word of mouth but for small manufacturers the process is more daunting: expensive and often hit-and-miss if not executed with some skill. In... read more

Testing first small-block Ford Hemi

By Alfie Bilk: If you were seeking a guidebook on how not to carve out a career in motor sport, Greg Brown’s story might be a good starting place. Following two years of studying numerous concepts and with a prototype partially complete, he undertook the daunting task of pioneering... read more