Transmission problem?

[Detroit57Bird]

In the past 2 weeks my 1957 bird 312 v8 has been strange when first thing in the morning.  It starts just fine but when you put it in gear it is very "sluggish" - doesnt really go.  If you give it some gas it gets going progressively and then seems fine.  Its fine by the time its out of the garage and driveway.  Other than that the transmission doesnt do anything unusual like shift harshly.  I do think I hear additional noise under the car when its in gear (not in neutral or park).  I recently checked the oil in the pinion gear, all full (even though it leaks). 

 

Would appreciate any suggestion on the likely issue or what to check.

 

Thanks!

Mark

[1957Birdman]

Hi Mark,

Have you checked the transmission fluid level after the engine is warmed up? It could be low and that might be causing your problem. I would suggest trying that first before getting into anything else.

Let us know what you find,

Regards,

Lew

[paul2748]

When was the trans last serviced? Maybe it's time for a fluid change, filter.