I recently replaced my timing chain and gears, distributor, wires and plugs trying to get rid of a nasty backfire coming from the carburetor. I also replaced the fan with an electric fan and am wondering if this may be throwing off the balance on the cam and causing all my issues. I say this because she idles nice but when I give it a lot of gas she backfires out the carb. I set the timing dead on and made sure all the wires were right.

I appreciate any and all help before I pull the engine and rebuild her.