anyone know how to remove the heater box out of a 68 polara.i need to change the heater core but cant figure it out.i took off every screw that holds the box cover but i cant get it out,i can see it.there is a bolt/nut on the fire wall where the ignition box is mounted,do i have to take that off,or are there more?

Hi there. That's the really big dual-core heater core assembly in your '68, if I'm not mistaken. These are once again available new, but yeah, you're going to have to get it all apart first! Best advice I can give you is to get and use the FSM, see this thread.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

Two questions. Is this an A/C car? Is the 68 the same as a 69? I did my 69 Polara, last year. I highly recommend removeing the complete assy from the car, and splitting the case on the bench. Otherwise you stand a good chance of cracking the brittle plastic (for lack of a better word) case. Make sure you seal the two case halfs, well, and the firewall, to prevent water leaks inside the car.
PS: my 69 Polara has A/C.

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Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225

it doesnt have a/c but has the plastic type box.