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Need valve spring recommendations for a stock 428CJ Need valve spring recommendations for a stock 428CJ
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  #17 (permalink)  
Old 09-07-2016, 03:35 PM
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Join Date: Feb 2004
Cobra Make, Engine: shellvalley 428 ford
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ERA427, what I think you have is a outer spring with damper. You can get a new spring just about anywhere for that engine. As long as it installed at 1.82 height you will never notice a difference in spring pressure with a stock cam. The original ford number for the spring is C8AZ-6513-B if you are looking on e-bay but it is not a requirement to be a ford spring. As long as the engine is running fairly well I would just change the spring and push rod. Oh yes, change the oil and filter to help make sure nothing got in the pan.
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