Mopar 440 down on power

I bumped the initial to 7 degrees as most of the fuel is 87 octane and adjusted linkage on the end barrels as they were only opening 85%. big change and it seems to be pulling very hard when I shift at 5500rpm...I am going to need to power time this as I do not not how much centrifigal my Mallory electronic dist has in it...is 34-35 degrees about right considering the specs I previously listed. thanx again.