Purdy Swoft Well-known member Jul 15, 2018 #21 If the block or head is more than three thousants out of flat , maching will be needed . At least that is what the guy that I bought my 5.9 compression heads told me .
If the block or head is more than three thousants out of flat , maching will be needed . At least that is what the guy that I bought my 5.9 compression heads told me .
