I recently put 351heads on my 302 block and came to discover that the 1.7 roller rockers don't fit. 1.7 roller rocker stud to install the roller rockers was to skinny for the hole in the 351 heads???
Can anyone help?
Sounds like your 3/8" rocker studs are too small for the larger 7/16" holes in the 351 heads. I'm not sure if you can get your rockers to fit larger studs, you may need new rockers or some kind of adapter stud.