[SailorJ]

Thanks for the reply! It actually sounds like a tack, tack, tack and as the rpm increases so does the noise until you can't hear it. Rpm drops...obvious tack, tack, tack is back. The push rods look straight from under the valve covers. I shined a light down the holes with engine running and push rod are straight and ratcheting while working. As far as the valves I have no idea. I guess a compression check would be a good idea! It has been sitting but I always start it and even gave it a once around the neighborhood with just the cab and radiator support multiple times. The problem didn't start until after that loud back fire(after fire) but no, it ran rough with the leads crossed. I just couldn't figure it out for a bit because I don't remember messing with the leads. The sound actually sounds and keeps me focused at the very back of the motor. Almost to the point where I'm looking at the bell mouth of the tranny. I'm lost.

@ 705jmguy - I hope that's not the case. I'm trying to get any info before taking heads off as it really sounds lower than that.

Oh, I'm actually a Florida guy stationed here in the Navy but I'll be here 3 more years.