best bolt ons for a 318

If your looking for power, the gear ratio and tire size is a starting point to know. Also will you change converters if the need arises? If you have a stock comp. ratio, I do not recomend a cam beyond 228 intake duration @ .050 unless you try to be slick and use Rhodes lifters or something like that.

But certainly a split cam since your heads are stock. About 8*'s more on duration should be right to help that thing breath better.