I have a set of heads I intend to bolt on the 383 I am building. They are 2.02/1.60, 74CC. They were given to me for free (they came off of may Dad's race car). Is obtaining the proper .040 quench as helpful on these heads? I will be running flat top pistons, about 10:1 CR and would like to do all I can to reduce any detonation.