Need Room for 240V 50A breaker

I need to install 14-50 recepticle to charge my recently purchased EV.
so need to put 240V 50A breaker.
This is my Sylvania (formerly Zinsco) Panel. A doc on the cover says I have 24 slots, but apparently 22 slots are used. So I wonder where the other two are? on the top?

If I can't insert an additional 240 breaker, can I replace the GFCI breaker for bath & outdoor occupying 4 slots with a new 2-slot sized modern GFCI breaker to make 2 slots free?
My current 4-slot sized one looks like for 120V, right?

And would it be safe to add this kind of loads into this panel, as you know I am hearing a lot of warnings regarding this notorious panel.

Thanks for help in advance.

 

All I can say is there is no room in that panel. It is also considered a fire hazard and should be replaced.

 

I don't see a main breaker. Do you have a another box somewhere?

 

I would not waste any money on a breaker for that panel.

 

Justin's comment and suggestion is right on, Sylvania/Zinsco panels are considered a fire hazard.

Zinsco Sylvania Kearney Electrical Panel and Circuit Breaker Hazards, Failures, Inspection, Detection, Repair, Replacement - Sylvania Zinsco circuit breakers and panel hazards

If you are going to do this, regardless of the hazard, consider the cost of a breaker and IF YOU CAN GET ONE. There are breakers available for replacement use, but technically I don't believe they are intended for new circuits. By the way, THEY ARE NOT U.L. LISTED. Expect to pay in the neighborhood of $75 to $100 for a breaker, if you can find one. I'd put that money toward a new modern panel.

 

Looks like everything is coming in from the top (hard to tell by photo), if so installing a new panel should be straight forward. If you do not want to change your existing panel and if there is room (right or left), install another small panel and swing some circuits to the new panel along with your new circuit and install a sub-feed breaker in the existing panel to feed it. I would go for a new panel with 42 positions, a good selling point when that day arrives.

 

Main breaker is outside the house in another box which has nothing but main breaker

 

Excellent, that makes replacing the panel very easy.

 

Thanks a lot for for all the input.

And oops... is the Salvania panel is that horrible?
But this house was built around 1975 and over 40 years there has been no problem.
Maybe because the usage of electricity has been so low profile.
And just looking inside around, there seems no soot or history of arcing but some dusts.
And Going forward, low profile day usage will be continued, and I will suck juice for the car only during the night.

Well ... Adding a breaker and an outlet, which will be sit just opposite side of this panel, looks like something I can challenge, but changing panel should be quit daunting to me. If I should then I'd opt for hiring an electrician.
How much should I budget for the panel change?

 

Panel swaps can vary based on local labor costs and materials chosen. Your best bet is to get estimates fro recommended local contractors.

 

Yes, they really are that horrible, but their sales were high because they were the cheapest thing on the market back then. Sylvania bought Zinsco and continued with the cost effective (cheap) Zinsco design. Within a few more years, this design was discontinued and totally gone.....for a reason. The breakers typically burn up from the back side, you will not see any problems just looking into the panel. The problem usually centers around the breaker's contact with the small thin aluminum ribbon style busbars.

Agree 110%!!