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I have an XF with the 4.1 carby leaded motor. What would the benefits be in getting some headwork done to it?? How much power increase would i be looking at?? Whats a reasonable cost to pay?? I dont know much about the details of working a head so please pass on your knowledge.
BTW i should have extractors and an exhaust soon if that matters.
I HAD A 3ANGLE VALVE CUT STOCK VALVES NO PORTING SHAVED
FAIR BIT THAT ALL IT NEEDS.
GET MORE OUT OF A CAM.
MY XP HAD EXTRACTORS ,LUMPEST CAM WITHOUT NEEDING A HIGH STALL,REBORED AND BEAT MOST STOCK V8S ON THE ROAD
BUT HAS A LOT KG`S 1200 OR LESS REVED TO 5500 WITH NO PROBLEMS AND GOOD BURNOUTS TO .
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