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Manley Valves Ford 4.6 & 5.4L SOHC (2V, 3V, 4V) Race Master & Extreme Duty Valves XH-426 Stainless Exhaust Material (2V/4V) XtremeAlloy Stainless Exhaust Material (3V) NK-842 Stainless Intake Material Chrome Stems and Hard Tips Swirl Polished and Fully Machined Stock Radius Triple Keeper Grooves

Part # Type Head Diam. Stem Diam. Installed Height O/A Length Price/Set 2 Valve SOHC - 1999 & Later (Race Master) 11637-8 EXH 36.0 mm .2740 Stock 4.650 $142 11639-8 EXH 37.0 mm .2740 Stock 4.650 $142 11636-8 INT 44.5 mm .2750 Stock 4.705 $142 11640-8 INT 45.5 mm .2750 Stock 4.705 $142 2 Valve SOHC - 1996-98 (Race Master) * These are for Ford Racing M-6049-D46 Cyl. Heads 11635-8 EXH 34.0 mm .2740 Stock 4.650 $142 11637-8 * EXH 36.0 mm .2740 Stock 4.650 $142 11634-8 INT 44.5 mm .2750 Stock 4.630 $142 11638-8 * INT 46.83 mm .2750 Stock 4.630 $142 3 Valve DOHC (Extreme Duty) Note: These are sold as sets of 8. Please order 2x sets of intakes and 1x set of exhaust to fit your engine. 11631-8 EXH 37.5 mm .2345 Stock 116.46 $412 11633-8 EXH 38.5 mm .2345 Stock 16.46 $412 3 Valve DOHC (Race Master) Note: These are sold as sets of 8. Please order 2x sets of intakes and 1x set of exhausts to fit your engine. 11630-8 INT 34 mm .2355 Stock 117.35 $142 11632-8 INT 35 mm .2355 Stock 117.35 $142 4 Valve DOHC (Race Master) 11615-8 EXH 30 mm .2740 Stock 116.5 mm $142 11617-8 EXH 31 mm .2740 Stock 116.5 mm $142 11616-8 INT 37 mm .2750 Stock 135.6 mm $142 11618-8 INT 38 mm .2750 Stock 135.6 mm $142

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