{"product_id":"ford-racing-small-block-v-8-hydraulic-roller-tappet-camshafts-3","title":"Ford Performance Small Block V-8 X303 Hydraulic Roller Camshaft","description":"\u003cp\u003eThe legendary X303 cam developed by Ford Racing for the 5.0L Fox-body Mustang. This cam provides a noticeable power improvement and lumpy idle while maintaining good driveability with a manual transmission. Works well with carburetors or mass air fuel injection.\u003c\/p\u003eBasic Operating RPM Range: 2,200-6,200\u003cbr\u003eLift @ .050\" w\/ 1.6 rocker: .542\" I \/ .542\" E\u003cbr\u003eDuration @ .050\": 224 I \/ 224 E\u003cbr\u003eLobe separation: 112\u003cbr\u003e\u003cbr\u003e\u003cli\u003eFits 1985 and later 302 roller cam blocks\u003c\/li\u003e\u003cli\u003eWill also fit 1963 – 1984 non-roller cam 289-302 blocks when used with hydraulic roller lifters M-6500-T58\u003c\/li\u003e\u003cli\u003eWill also fit 1994 –1997 351W blocks with factory roller cam\u003c\/li\u003e\u003cli\u003eWill also fit 1969 – 1993 non-roller cam 351W blocks when used with hydraulic roller lifters M-6500-T58\u003c\/li\u003e\u003cli\u003eRequires upgraded valve springs. For stock cylinder head applications use M-6513-A50 valve springs installed at 1.820\". For aftermarket cylinder heads M-6513-BH recommended.\u003c\/li\u003e\u003cli\u003eValve spring requirements: 120 lbs valve seat pressure minimum 295 lbs open.\u003c\/li\u003e\u003cli\u003eOn EFI engines, performance camshafts work only with mass air induction systems. Will not work with Explorer EEC-V EFI or speed density EFI systems.\u003c\/li\u003e\u003cli\u003eAlso fits 1994-97 351W with factory roller cam when used with mass air EFI.\u003c\/li\u003e\u003cli\u003eStock 5.0L HO cam advertised specs are 266°\/266° duration, 0.444\"\/0.444\" lift.\u003c\/li\u003e\u003cli\u003eHigher stall torque converter recommended for automatic transmission\u003c\/li\u003e","brand":"Ford Performance Parts","offers":[{"title":"Default Title","offer_id":47925947433218,"sku":"FRPM-6250-X303","price":402.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/0618\/0354\/files\/M-6250-X303_3.jpg?v=1784977256","url":"https:\/\/www.lethalperformance.com\/products\/ford-racing-small-block-v-8-hydraulic-roller-tappet-camshafts-3","provider":"Lethal Performance","version":"1.0","type":"link"}