From what I have seen is they put small ratio rockers on to make the street trips, like 1.2 ratio, & put the big ratio rockers on to race.

1968 Charger COLD A/C Hilborn EFI
512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim
2020 T/A 392 Stock 11.79 @ 114.5