D0AZ-6250-D 429SCJ 1970/71, lash .024", valve timing- 41/79, 89/31, @050", 5atc/21, 43/27btc. adv dur 300 i&e, lift@lobe .298", lift@valve .509", overlap 72deg. thats the only specs a have so i hope it helps out. its a beast of sounding cam but being a very old school grind you could do well from fitting something more modern and get more response and hp. and retain the origional very lumpy sound of the SCJ ... what cam are you thinking of fitting.? CraneCams
, the crane F246 will give you a similar idle quality as the SCJ cam and perform a whole lot better., or maybe you could get a copy of SCJ cam made although they are very flat down low(slightly better if advanced 4 or 6 deg) and really for what they are dont perform all that well.