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| 2004 to 2008 F-150 and Mark-LT 4.2L, 4.6L and 5.4L equipped F-150s and Mark-LTs. |
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#2
Fri, April 23rd, 2010, 05:42 PM
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ford motors are built for low compression/87 octane. the only motors i know that are built for higher compression are euro motors and race motors/crate engines.
research this and see what you find. idk if its too late to re-order or not but shoot him an email and see what happens. g/l
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1999 f150 4x4 - Flowmaster 40 series exhaust - 33" BFG M/T km2's - PHP Gryphon Programmer - RotorPros Slotted rotors - Mag-Hytec Diff Cvr Let's go Wheelin!!! 
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