What kind of rocker gear are you using on those heads? A friend of mine is building a similar 572 with those heads and had a lot of issues getting rockers that were correct. Jim.

64 Dodge Coronet 440. In progress
1998. Dodge Avenger. 8.35@165. 4400 DA
250” Neil and Parks Slip Joint. 7.36@183.
4600 DA
242" Mullis Dragster. 6.90@ 200mph