I turned out of my driveway and was going up the road and I noticed that it went up to 2500 RPM until it shifted into 2nd, and it jolted the whole truck when it did. I thought that was wierd but continued on. When I started off from the first stop sign the engine would only go to 1400 RPM and would not shift into 2nd at all. I also noticed that black smoke started coming out of the tailpipes, not a lot but it was continous and that it was running a little rough. I made a block around and it continued to only get to 1400 RPM and wouldn't shift. Even with the pedal to the floor it wouldn't get over 1400 or go into 2nd. I got in front of my house when it died. I popped the hood and saw smoke coming out of the air cleaner assembly, it was just a little cause it stopped after 10 or so seconds(backfire??). And now it wont start. What the hell is the problem? Is it the tranny? I'm running a 305/700r4. Thanks for any help. FUN WITH 31's!