Ever wondered what people are talking about when they say "dual overhead cam"? Don't worry, because we're here to explain it ...
What would they say down at the station if you turned up with one of these? The NHRA tech line? DOHC 4-valves-per-cylinder 389 was developed in 1963, SOHO 421 a year later. Both units began life with ...
Once upon a time, picking a cam for a given engine combo was all about compromise: improve top-end power at the expense of low-end torque, run well at wide-open throttle but sacrifice idle stability ...
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