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which heads??
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[QUOTE]Originally posted by Tom Renzo: [QB] WELL got this from the speck sheets from several cam manufacturer for checking PV clearance. If you are going to use rocker arms with a higher than stock rocker ratio now or in the future, you will need to check piston to valve clearance with the higher ratio rocker at this time. (Higher ratio rockers increase gross valve lift). And can decrease piston to valve clearance. Here is another engine builder that just does ford engines. QUOTE!! Most ford engines with a valve lift of less than .500" should be good to go in regards to P/V clearance. If higher lifts are anticipated you should check the piston to valve clearance on Ford engines. Thank you [/QB][/QUOTE]
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