I know my Indybrocks sure liked the 4" stroke it would run 9.7xx at 138 in a 3000# car with what i call a milder solid roller


70 duster full chassis super pro 416 CNC Indybrock heads 727 w/brake

best so far 1.212 60 6.219 in 1/8 at 110.88 9.768 at 137.81 1/4