95 f150 302.changed cam now no power
 

I've gotta 95 f150 with a stock 302.its got 240000 mi.when I got it a lifter was slightly knocking.I decided to go ahead n put a whole cam n lifter set in it and now it is hard to start has a slight miss and has absolutely no power.I took the timing cover back off to double check that I didn't accidentally go a tooth off with the timing gears and they were aligned correct.I set the timing to 10° btc and the timing shows correct with a light and I did take the advance jumper plug out to correctly set the timing.Any info would help I have absolutely no idea what the problem is now.