Tranny is possible but doubtful. No way for the transfer case. It would be good to check all fluid levels any time you have a problem with any system. Did it have this problem before all the work started?

 

i don't think it should have an o2 sensor if it don't have the lean burn system. i still think your problem may with the way the carb is tuned.

 

Ok will look in to that again after work

 

When I first got the truck I could not get over 50 mph now it will go 70 wich is good but I have to play with the throttle at first it will almost fall on its face then will take off it has always had a good idle

 

after driving for a doing 70 mph are you able to take off from a stop without it falling on its face?

 

Most of the time yes

 

i would say if you lean the carb out a tiny bit it should start running better. there should be 2 mixture screws on the carb. turn them clockwise about a 1/4 turn at a time to lean the carb out. make sure to adjust both screws equally. what you are almost looking for is to get you truck idling as high as you can when adjusting them.

 

Ok sounds good to me will try it and keep you posted

 

I took both screws clockwise and lost my good idle at about 1 full turn to each so I took them counter clockwise the full turn back to where I was and then about another full turn to find that high idle you were talking I noticed it instantly but now if I hammer on the throttle it will go just fine but if I ease from a take off or just ease at 20 or 30 mph than it starts cutting out again

 

strange that it was tuned too lean. i think you might just have to try to fine tune the screws until it is running good. also, when you set the timing did you disconnect the vacuum advance line that runs to the carb?