I have an automatic 727 transmission in my 75 dodge dart,and it seems to slip a little bit when its cold , but when the car starts to warm up after about 10 minutes it doesn't want to move at all, in any gear, any idea what that might be?

 

Start the car....Put it in Neutral....And Check the trans fluid.....Should be half way to the full line when cold...

 

did you put a 440 infront of a 383 trans?

 

okay i'll try that, and its a 340 small block with the 727 auto,

 

Either the fluid is very low or the front pump in the trans is broken

 

is the trany O.E.M. 318?

 

Just checked the fluid, it's good on fluid, but you can hear a Whiney sound when you give it noise in gear, especially reverse, could it be the transmission pump going out?

 

When you give it gas in gear, sorry

 

First Are you aware you check the fluid with the car running ? Easy for a newby to over look.. Other wise no drive or reverse a Pump failure possible converter failure

 

Time for an overhaul....