80 dual Vbelt alt pulley on my Buick V8

[Gumby]

80 dual Vbelt alt pulley on my Buick V8

If I put on two belts like it had stock, it squeals all the time, if I just have on one belt, it will only squeal on take off for a sec or two.

Both annoying

All looks linned up proper, tight as can be, tired of the noise peroid;
and having to turn off say like the heater fan before I take off at night with lights on so it does make noise.

Anyone ever run into this???

[raceman6135]

I've run into that when the belts I was using were mismatched.

By "mismatched" I don't mean they were different sizes; what I mean is that they were from different batches, and therefore slightly different.

If you look on the outside surface of your belts, you'll find the part number / size code (such as 13A540), plus there will be another number that is like a date code or batch code.

When you buy 2 new belts, try to get them from the same batch. That will help ensure that they are made of almost exactly the same rubber composition and length.

When they make V-belts, they don't make them just 1/2" wide -- they're actually a couple of feet across, and then they are "sliced" into 1/2" width sections. So, if the batch code is the same, then both belts would come from the same large, original belt.

Hope that helps.

[Gumby]

Ill have to try that, Im tired of feeling those invisible eyes judging my car maintenance when I forget to shut off an accessories before a stop at night to lower power demand and it squeals like a lose or crappy belt is installed.

[Gumby]

The mystery is solved, some reason is they sell two belts for it, one is just 1in longer.

easily mixed up I bet.

Made sure with their belt measure tool I got two alike, fingers crossed it works out.