I didn't have much luck with my last post. Hopefully I can do better this time! I am building a pair of 383's for my 1978 23' Formula with alpha 1 drives. I know the drives are the weak point but I am re-building them with the HD parts that are available. My question is regarding choice of heads. I am running in fresh water so I would like to use aluminum heads to save weight. I already have one pair of "350 HO ZZ4" heads so I was just going to buy another pair. But then I saw the "fast burn" heads. Is the "fast burn" heads overkill for my application, or will the ZZ4's do the job?
Any help would be greatly appreciated!