Still did your donor 318 have Flt tappet Hyd or Hyd roller lifters
hyd roller cams can be reground into restricted limits of the hardening
usually reground as a Mopar Performance RT grind or a slightly bigger cam called the Sausage grind
you will just need new pushrods to account for the reduced base circle
or just run the stock cam for awhile (If you have stock gears and converter I would not touch it)
put your scarce dollars (they are always scarce) into a new timing chain and practice degreeing it in as you WILL have to degree in ANY regrind if you make ANY changes in the Lobe Separation Angles abbreviated LSA or LCA
as said once you pick a rpm range goal call Jim at Racer Brown late afternoons work best
