One of the most common valvetrain upgrades for pushrod-style engines is roller rocker arms, which are often said to increase horsepower through reducing friction. But is it true? Find out on this episode of Engine Masters.
Video
Length 00:19:57
Frame Width 1920
Frame Height 1080
Data Rate 5544 kbps
Total Bitrate 5669 kbps
Frame Rate 23.98 frames/second
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