Hot Rod Guide To The Stars
Even though the stock manifold supports pretty heavy power figures, Alan Johnson said he knew he needed a versatile manifold for the next step, so he tooled up for a cast-aluminum, single-plane piece in 1998. It does the things that the stock manifold can't quite do: make huge power. Even with the single-plane arrangement with a large plenum, Johnson cites the efficient port/valve arrangement and subsequent high port velocity as the major contributor to low- and mid-range driveability--even on a stock engine.
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