Dual belt alternator pulley set up

[carrman]

Guys, I'm currently running a single belt for my alternator on the 440 in my '68 Newport with power steering but without a/c. My electric cooling fan(Mercedes) draws enough current to cause the alternator belt to squeal loudly in protest. Belts adjusted correctly, but I know I need to go to a dual belt alternator. What pulleys besides the alternator do I need to obtain to do this?

 

[CBODY67]

What type of belt are you using?

Reason I ask is that on the later 1970s Cadillacs with the factory 100amp alternator, the pulley was smaller than normal AND used a toothed/cog V-belt to run it. The "teeth" allowed the belt to better get around the smaller diameter pulley. Usually seen on cars with the electric rear window defogger.

Just some thoughts,
CBODY67

 

[carrman]

What type of belt are you using?

Reason I ask is that on the later 1970s Cadillacs with the factory 100amp alternator, the pulley was smaller than normal AND used a toothed/cog V-belt to run it. The "teeth" allowed the belt to better get around the smaller diameter pulley. Usually seen on cars with the electric rear window defogger.

Just some thoughts,
CBODY67

that's what I'm running.

 

[carrman]

It would appear the only way to get a dual belt setup for the alternator is with a a/c compressor mounted to get the belts mounted high enough?

 

[CBODY67]

That would be the only time the dual alternator pulley was used, IIRC.