Belt Size needed to By pass AC compressor 1975 eldorado

[stowe75]

Hello
  I Am looking to by pass the AC compressor on my 75 eldo. Would anyone happen to know the belt size or part number?
Thanks

["Cadillac Kid" Greg Surfas 15364]

I've used 47 and 48 inch belts that both work. Dayco 17470/17480. Those are the same pulleys that your motor used.
Greg Surfas

[cadillacmike68]

Remember that the 1973 (or 74?) and later with a single AC / PS belt used a thicker belt than the 1968-72 which had a dual belt configuration.

[TJ Hopland]

74 some cars got the single belts.   75 they all did.   Lengths were close enough to interchange.  If you don't care what it looks like I have run the duals in the singles and singles in the duals.   They are close enough to work just looks a little strange. 

["Cadillac Kid" Greg Surfas 15364]

The OP"s question was what belt can he use if he wants to bypass the AC compressor. In 75 they only had a single belt on the AC/PS . 
Greg Surfas

[The Tassie Devil(le)]

Ah ha.   Missed the hyphen.

I am running a separate belt for bypassing the AC on my '72, as someone installed a single-pulley AC Compressor and the belt I have for the Crank to PS pump is a narrow groove one.

Looking at the picture, mine uses a 7473 Gates XL   11A1200  But it is the narrow one.

Bruce.

PS.   One day I will change the top pulley for a dual belt one, but it has been working well since 2008, so there is no rush.

[cadillacmike68]

Greg's right with the length, just make sure you get the thicker belt than the 1968-73 ones or it will sit low in the pulley grooves.