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1997 to 2003 F-150 4.2L, 4.6L, and 5.4L equipped F-150s. |
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#29
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I just read an article and "Power Improved Heads" are what gave these engines the extra HP and TQ starting in '99. I am glad I turned down the '97 engine and opted for a later model.
http://www.mustangandfords.com/techa...ord_modular_v8 |
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