{"product_id":"proflow-pfeahc20064sp-cylinder-heads-airmax-200-535hp-aluminium-assembled-64cc-chamber-straight-plug-200cc-intake-runner-sb-chevrolet-pair","title":"Proflow PFEAHC20064SP Cylinder Heads AirMax 200 535HP Aluminium Assembled 64cc Chamber Straight Plug 200cc Intake Runner SB Chevrolet Pair","description":"- Cylinder Head Material A356.0 Aluminum\u003cbr\u003e - Exhaust Runner Volume 70cc \u003cbr\u003e - Intake Valve Diameter (in) 2.020 in.\u003cbr\u003e  - Exhaust Valve Diameter (in) 1.600 in. \u003cbr\u003e - Maximum Valve Lift (in) 0.575 in. \u003cbr\u003e - Number of Springs Per Valve Dual \u003cbr\u003e - Lock Style 7 degree \u003cbr\u003e - Valve Stem Seal Style Vition seal \u003cbr\u003e - Rocker Arm Nut Thread Size 3\/8-24 in.\u003cbr\u003e  - Guide plate Pushrod Size 5\/16 in. \u003cbr\u003e - Valve Cover Mounting Style Perimeter bolt\u003cbr\u003e  - Valve Angle 23 degree \u003cbr\u003e - Valve Guide Material Manganese bronze \u003cbr\u003e - Valve Seat Machine Style 3-angle \u003cbr\u003e - Valve Seat Material Power metallurgy \u003cbr\u003e - Steam Holes Drilled No\/ If required \u003cbr\u003e - Oiling Style Through pushrod\u003cbr\u003e - Number of Springs Per Valve: Dual\u003cbr\u003e - Valve Spring Style: Standard\u003cbr\u003e - Outside Diameter of Outer Spring: 1.470 in.\u003cbr\u003e - Spring install height: 1.85 in. @ 100lbs \u003cbr\u003e - Maximum Valve Lift (in): 0.575 in.@ 300lbs\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e  \u003cimg src=\"http:\/\/vpw.com.au\/limage\/sbc200.jpg\"\u003e\u003cbr\u003e\u003cbr\u003e","brand":"Proflow","offers":[{"title":"Default Title","offer_id":44878202077495,"sku":"PFEAHC20064SP","price":1961.85,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0680\/9364\/1015\/files\/123150.jpg?v=1780457081","url":"https:\/\/enginemaster.com.au\/products\/proflow-pfeahc20064sp-cylinder-heads-airmax-200-535hp-aluminium-assembled-64cc-chamber-straight-plug-200cc-intake-runner-sb-chevrolet-pair","provider":"Engine Master","version":"1.0","type":"link"}