I have recently put in a new motor in my car and the transmission has leaked slightly since I got it. However, today, it has leaked at least a quart and a half while sitting still at work. Can you all give me ideas of where to look. The transmission pan is tight. It may be coming from the transmission cover I am not sure (the black plastic thing) tq converter?

I put a 375 roughtly hp motor in it. While doing so, I replaced the transmission detent cable. I have been driving extremely easy. It is shifting fine. Just loosing a lot of fluid. I have been keeping it filled.

Please help with any possible ideas.

 

Could be the input shaft seal.

 

Very well could be. Is this easy to identify without the cover on?

 

If I remember right that cover is only held on by 4 little bolts should be quite to take off. Once off you should be able to see all the way up behind the converter. It will be pretty clear if its that front seal or not. It's not to hard to change. Just have to pull the tranny to do though

 

Depending pm how long it sat the torque converter could have just drained down causing the fluid level to be higher than normalleaking out of what could be a number of places, front seal, rear seal, dip stick. Hole

 

It's either the rubber grommet that the filler tube goes into or where the TV cable goes in.