During one of our never-ending technical discussions, Jim Grubbs at Jim Grubbs Motorsports (JGM) suggested that we take a look at the flow difference between 30- and 45-degree valve seats. While ...
As with most things in life, it’s the details that make the difference. You might not think that a measly degree here or there could make more horsepower when it comes to a valve job, but there’s ...
Angle-milling cylinder heads is one of the best ways to take existing equipment and make it work better. Almost all racers understand the concept-angle-milling is essentially decking a head on an ...
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