Recently purchased my first RC, the transmission was blown so I don’t have a basis for my rebuilt transmission. My ‘89 RC has 105K miles w/a 727 (3K on trans. rebuild) a 318 TBI 4X4 32x11.50 Mud Terrain tires and no lift. Under normal “on the road” driving conditions everything seems to work fine aside from the occasional clunky shifting. Off-road I have problems in 4H or 2H-the thing just will not move in certain situations even with the accelerator to the floor. 2H does not even offer wheel spin. I’ve been told the truck is heavy and/or has a high stall torque converter. With the truck sitting on level ground it will crawl away @ idle. Is there a problem with the transmission rebuild or is my 318 that weak? The engine uses no oil, doesn’t knock, but smokes sometimes at start-up. This is very frustrating because I bought the truck to go not as a grocery getter.