Engine bogging under throttle?

[JohnKimble]

Hello,

My question is in regards to my 1985 Chevy k10 350. Today I finally pulled it out of storage, it's been sitting for over a year (sta-bil in the fuel tanks).

I hooked up a new battery and it fired up without issue. After a minute or two I began to give it some gas (while in park). If I slowly depressed the gas pedal, the engines sounded fine. If I quickly hit the gas to the floor, it would bog and stall out. If I slowly increased the RPM's, then quickly floored it, it would bog and hesitate.

I let the engine idle for about 10-15 minutes. I tried hitting the pedal to the floor, and it roared without issue. I'm not sure if anyone has any idea as to why after 10 minutes, the truck appears to be running fine. Could this have anything to do with a new battery and the ecm being calibrated?

I'm not sure if that even makes sense in a 30 year old truck, but I really couldn't think up any other reasoning.