Hello,i have 2 small problems and they go like this.i'm rebuilding a sbc 350 and i'm up to putting the heads back together and i don't no weither to use umbreller type valve stem seals or the o-ring type is one better for lubrication of the guides?or is oil down the guides bad ?.Second problem is that the heads came with washers under the original springs ,i presume i won't be needing them if i have new springs ? i get a installed spring height of 1.720" without them. Everything is new or rebuilt and i want to do it right cause its my baby
it will be a daily driver ,any comments will be greatly appriecated thanks Pete.
these are #041 heads,new guides (bronze inserts),10:1 compression, 214/224@.050, .444/.467 lift 1500-5500 ,lt1 springs.