cam talk

yea that 850 flow pretty good...as far as the changes go it never made any diff. in the motor or the time slips....at the track 1 night we went from like 32 degrees to 38 car never changed went right back out and ran same #'s put ss springs on nothing changed until i figured out the chain problem....now if i move the dist. evrything else moves up or down...what do you think the 306 mag would work best with as far as comp. and head flow.....