Any TH350 transmission experts on here?

[WildBillHimself]

My 1972 Camaro doesn't get driven regularly. When it sits for a few days, the fluid in the torque converter drains into the transmission and raises the fluid level to the point that it overflows from the vent on top of the case. Other than driving it every day, what's the fix? I'm assuming that the trans will have to come out and I'm not going to do that myself.

 

[DinkyDau]

My 1972 Camaro doesn't get driven regularly. When it sits for a few days, the fluid in the torque converter drains into the transmission and raises the fluid level to the point that it overflows from the vent on top of the case. Other than driving it every day, what's the fix? I'm assuming that the trans will have to come out and I'm not going to do that myself.

If it is safe, I would start the car and let it warm up. Once it's warm check it then and see if it's the same level..

 

[DinkyDau]

Oh and I am not expert.

 

[WildBillHimself]

The level on the dipstick goes down when it's running. The fluid goes back into the torque converter but it doesn't stay there for more than 2 or 3 days, then starts to overflow.

 

[BillsCamino]

Strange...never heard of this.
Wonder if there's a check valve in the front pump or in the valve body ????
Do you park this car uphill ??

 

[Toothlesswun]

Check valve in the front pump has failed, Try running one quart low as a temporary fix.

 

[DinkyDau]

The level on the dipstick goes down when it's running. The fluid goes back into the torque converter but it doesn't stay there for more than 2 or 3 days, then starts to overflow.

The level on the dipstick goes down when it's running. The fluid goes back into the torque converter but it doesn't stay there for more than 2 or 3 days, then starts to overflow.

I'll be interested to hear what it might be also..Good Luck

 

[Toothlesswun]

Also make sure the vent is not plugged with dirt and debris.

 

[WildBillHimself]

No, it's parked on my level garage floor.

 

[WildBillHimself]

The vent is clear.