79 351m question
 

79 f 250 2wd 4 speed dana 60 3:54. 351m 600 edelbrock.
Above 60 this motor seems to start reving up some. I've only had experience with the 460s and know they didn't like the higher revs. Is it ok with the 351m. No tac on truck just going by ear. Traveling from montana to az and would like to run more than 60.