If you could find a set the early stage 4 iron heads are very good.The ports are larger than std. bb iron heads and the dog leg is almost elimated as cast. the casting has extra materal for porting also. Every thing stock will bolt up.For an iron head motor they would be worth findinga set.I know this because I have a set and they work very good. Also from the outside you canot tell that they are not stock heads.
Last edited by yella71; 05/31/0910:23 AM.
71 challenger convertable, 64 sport fury 383 ci with factory air
99 sebring convertable
89 CTD pup
