Alternator spacer length

[dadeo]

For big block what is the spacer length between the alternator and cylinder head on the upper long bolt for a non-ac car? Is it 1.25" or ? Getting belt squealing when I rev.

 

[Bill76]

On my 67 big block it is 1.54 inch's
But I am not sure it is the right alternator for the car

 

[tonysrt]

As long as the belt is straight you have right size spacer. Squealing is usually the belt slipping, when Alternator is under a load, usually after a start or reving in neutral. My alternator is approx. 11/4 from head. Make sure belt is tight and not glazed from slipping on pulley.

 

[493 Mike]

Don't over look worn pulleys either. I had a customers Chevy years ago that would not stop squealing until I put new pulleys on the engine.
Mike

 

[Bill76]

Make sure belt is wide enough , it should not touch the bottom of the pulley.

 

[dadeo]

Thanks for the tips. Bible says 1.25" but I measure mine at 1.50" and pulleys look really close to inline but angled so that's why I asked.

 

[dadeo]

Tried a 1.25" spacer and pulleys are not aligned so I put the 1.50" back in and snugged the belt tighter - thanks for the input.

 

[tonysrt]

Did tightening the belt stop the squeal?

 

[dadeo]

So far no squeal but you know how that goes. Again, only when revving in neutral before and I'm not a fan of overtightening the belt.