th 350 only going in reverse

[cutthroatxxx]

Ok so in my 83 monte I pulled it out of my shop tonight & went to pull up my driveway that take you to the main drive&about half way up to my house I guess 400 feet or so....nothing it wasnt moving@ all I went through all the gears&the only one that works is reverse.I checked my fluid&it was bone dry!I allways keep my fluids @ proper levels so I figured I had a leak.The car has been sitting for around a year since I put the new motor in besides once a month or so when I start her to check on her.I put her in my shop about two weeks ago&didnt notice any fluids on the floor so Im guessing it happend while she was outside.Now what I did was pour in about 7 qts,fired her up&jumped on the ground&saw just about all of the fluid on the ground.I backed her up&jacked the front end up&it appears the fluid is only coming out when shes running&it seems to be coming from atop of the bell housing.I cant see where up there so Im guessing its the trans seal.Now I know little about trannys so I would appreciate any help.I have no idea if anything else could possiblly be up there that could be leaking&if just the leak could be causing it to only go in reverse.If replacing something like the seal or anything is fine with me.Im sure with help from you guys&some google&reading I could do that.If I have to replace the transmission thats fine..just dont wanna pull it if I dont have to.

 

[Oldsmoletick]

Whoa man, 7 quarts? If it appears to have come out of the top of the bell, it probably srayed out of the vent that is up there from being overfilled. Best thing, clean everthing off, drain it, check for crap in the pan, (if there's chuncks, plan to rebuild), throw in a new pan gasket & filter, and top it off starting with about 3 quarts (add more as needed only, most likely will take about 4.5). You mentioned new engine, did you replace the torque converter seal while the engine was out? Dipstick grommets will leak but usually only while not running, while you have the pan off (if) check to make sure yours in is good shape.

 

[maddog20_20]

Mine did the same thing after sitting forever - and it was/is the front seal (where the torque converter goes in). I haven't replaced it yet, as I am planning on pulling engine and transmission when I go to put the V8 in it. It has all but stopped leaking (only a few drops after sitting overnight) since I have been driving it.