Is it my Tranny?

[K-Prime]

Hi.
I own a 1982 Cherokee, 360 with the 727 tranny. It starts up fine but as soon as i put it into drive it sputters forward and then stalls. the only way i can get it to move is if i start in drive (I know its havoc on the starter.). origanally i thought it was the tranny was gone, but then i thought "If it was the tranny wouldn't the revs be doing something?" I am completly stumped on what it is.
Anyone have ANY Ideas???

[JeepFreak]

Sounds like a vacuum leak some where on the motor. Could also be timing is way off. If it just started doing it all of the sudden then I would lean toward a vacuum leak. I would start looking there first then check timing. You could have also jump the timing chain but lets check the little easy stuff first.

[K-Prime]

It didn't start doing it all of a sudden. For about a week it was REALLY lacking power up hills (Infact i couldn't get outta my drive way unless i was in reverse.). Then one morning it started to act up like i described in my firt message. I will try what you suggested anyways though. Thanx for the help.

[JeepFreak]

If it was the tranny you would know for sure. You can't mistake when a tranny is slipping. The motor revs and you just go know where fast. My guess is still a vacuum leak. Does it still run bad after it has warmed up? Might be looking at a carb rebuild too.

[K-Prime]

It doesn't improve even when it is warm. Hopefully it is a vacum line ($700 for a rebuild). i will check the lines, Timing and try putting on the carb from my brothers Landcruiser. I will let you know if i solve the problem.