Page 134 of 2009 Performance Parts by Ford Racing Performance Parts

valve train components intake valves single groove partnumber application sold individually description head tip total diameter length length m-6507-j302 m-6507-a304 m-6507-a351 m-6507-b429 gt-40 head aluminum m-6049-y302/x302/x304 x305/x306/x307 m-6049-z304/z304d z304da m-6049-n351 429/460 wedge cj aluminum scj aluminum 1.940 2.02 2.020 2.20 0.383 0.290 0.250 0.250 5.078 5.340 5.140 5.265 premium stainless steel swirl polished under-cut stem premium stainless steel premium stainless steel premium stainless steel m-6507-d461 m-6049-d46 46.83 mm std 117.6 mm premium stainless steel exhaust valves single groove sold individually partnumber application head tip total diameter length length description intake valve m-6505-a351 m-6505-a429 m-6505-b304 m-6505-d461 m-6505-g302 m-6049-n351 429/460 wedge cj aluminum scj aluminum m-6049-z304da m-6049-d46 gt-40 head c.i m-6049-l302 aluminum m-6049-y302/x302/x304 x305/x306/x307 application type 1.600 1.76 1.600 1.540 0.250 0.250 0.290 0.383 5.140 5.050 5.365 5.078 premium stainless steel premium stainless steel premium stainless steel premium stainless steel swirl polished under-cut stem 35.88 mm std 117.6 mm premium stainless steel valve springs partnumber id od minimumloadsnewsprings closed open m-6513-a50 289/302/351w with ford racing gt-40 cylinder heads pkg of 16 m-6049-z304da ford racing cylinder heads single 1.006 1.500 110 lbs 1.820 240 lbs 1.400 exhaust valve m-6513-a351 m-6513-bh 289/302/351w/460 dual 0.800 1.460 1.055 1.290 135 lbs 1.850 130 lbs 1.800 394 lbs 1.175 313 lbs 1.175 single 0.656 beehivetm 0.885 conical valve spring notes valve springs with the same load rating but with different color-coded stripes may be packaged together 1977 and later 302 engines have different installed heights for intake and exhaust valves with damper requires nylon valve stem seal for use on production heads see page 131 valve spring retainer chart and notes sold in pkg of 16 not recommended with stock rocker arm may have interference valve spring with damper valve guide kit m-6510-y303 sold in sets of 4 replacement valve guides for m-6049-y302/y303/x302 x303/x304/x305/x306/x307 · .300 inside diameter undersize · .557 outside diameter standard valve stem seals positive-type guide-mounted seal partnumber fits most production 0.550-0.570 diameter guides m-6571-a50 rubber type applicationnotes packaging gt-40 cylinder pkg of 8 intake heads no machining and 8 exhaust required seals valve push rod guide plate see page 228 for installation instructions use with mechanical cams threaded stud adjustable non-rail rocker arms and hardened push rods may require modification for use with roller rocker arms part number cylinder head push rod diameter sold in pkg of 8 m-6566-d311 m-6566-d351 m-6566-scj m-6566-z304d 132 289/302/351w m-6049-n351/n352 m-6049-scj/scja/scjb m-6049-z304d/z304da .3125 .3125 .375 .3125 m-6566-d311 shown techline 800 ford788 notlegalforsaleoruseonpollution-controlledmotorvehicles directreplacementpart seepages3-9forimportantsafety,emissionsandwarrantyinformation.

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