The Four-Valve Swap Power Struggle Upgrade

When You Need 9-Second Muscle And Your Two-Valve Engine Can't Hack It, Swap It Out For A Four-Valve.As much as Ford's modular engine family was maligned when it debuted, we have seen the performance envelope for modular-powered Ford street cars ripped open in recent times. Big horsepower and streetability now go hand in hand, but at some point, there is a limit. We found that limit when we met up with Bob Watson of Jacksonville, Florida.


Photo Gallery: The Four-Valve Swap Power Struggle Upgrade - Muscle Mustangs & Fast Fords Magazine

Photo Gallery: The Four-Valve Swap Power Struggle Upgrade - Muscle Mustangs & Fast Fords Magazine


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