I've just acquired a 78 B300...an old Aspen ambulance. It needs a new AC compressor. I can't seem to find one. Is there a source?

Also, would if be possible to adapt a newer serpentine belt system from a newer 318 (5.2)? Would it bolt up to my motor

 

Guess if you want to convert to a serpentine belt using a R134 compressor would make sense. Not sure what all needs to be done to use the stock magnum set up but here are some details. There are few different aftermarket set ups available.

 

These three part number seem to keep coming up in my searches.

1. FOUR SEASONS 57057 Remanufactured w/o Clutch; Prefilled w/ OE-Specified Oil w/ York Compressor; Dealer Installed AC

2. UACCO11396RF Reman

3. GPD 7511426 W/O Clutch; Contains Shipping Oil Only Flange; Right Hand Suction; w/ York Compressor

 

Alloro....I've found those numbers I think. But, every time I find a compressor listed for my beast....it says"

Not in Stock
or
Not Available

next to it....grrrrr

 

Does this one match yours? It says 2 available.
https://www.ebay.com/itm/285607470672

 

That is not my compressor. Mine is a Vee-Twin (2 cylinder).

 

Napa may have 'em, but, they certainly ain't cheap.

 

Napa does not have them.

:-(

 

It appears that NAPA was the only source for those..... Manufactured by York, I do believe. Might wanna check with them?

Also, I saw an adapter bracket to use a newer style compressor in it's place..... but, don't have the link for that at the moment.