229 V6 Timing! Help!!

[Seminolecowboy]

I have a 1981 229 V6 and I believe the timing is off. I have it set currently at 6 degrees btdc and in second gear it does not have much power! I started at 0 degrees tdc and worked my way up to 6 btdc trying to get the power up, but have had only minor improvements. All I need to know is where to set the timing, as it idles perfect and goes through the rest of the range pretty good until 45-65 mph where again it does have problems with power! Great oil pressure and great water temp. New Thermostat and full tuneup and still having issues! Someone please help!