The Four-Valve Swap Power Struggle Upgrade
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The BBK twin 65mm throttle body was carried over from the Bullitt intake manifold and is installed upside down as the throttle linkage on a Four-Valve is on the opposite side. There is a threaded plug in the back of the throttle body that had to be removed to work with the Four-Valve intake manifold. A stock Mach 1 throttle cable was also sourced to replace the Bullitt cable, as was a Mach 1 throttle cable bracket. Since the upper plenum now sits on a 1-inch spacer, said bracket was modified by removing the cruise-control tabs to clear the hood. We still have AC, heat, and all other power accessories. View Related Article
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