1964 heater core question

[lnt-1000]

My 1964 dodge polara with 383 has a shot heater core, the replacement shows it with an 5/8” outlet and a 1” inlet, mine has both inlet and outlet at 5/8” does my car have the wrong one or does the 1” inlet reduce down to 5/8” inside the heater box?

 

[VANDAN]

Call Bob Schirmer, at Glen-ray Radiator. They can repair your original, and you'll have a Quality piece, that probably won't ever need your attention again. Support US Made products, and Labor !!!

 

[Dave6T4]

In and out are both 5/8" .

 

[ruffcut]

Seems the 1" is a misprint. ruffcut

 

[Red63440]

The water valve is where the reduction is. The inlet on the heater box is 1”, the outlet on the heater valve is 1” but the inlet on the heater valve is 5/8”..