Any body have a small block with AC that can keep the belts on at 6,000rpm???? I use 2 belts over the c-171 compressor and I think the problem may be that the belts are never exactly the same length. One is always longer than the other and I can only get good tension on one belt. I think that this causes the other belt to fly off????
After the belts came off yesterday I put one back on and cut the other one off and it stayed on for a 5,000rpm blast. Does anybody know where I can buy 2 belts that are exactly the same size??? I seem to have good alignment.
TIA TBF

I ran into that a while back on a bb car.
No one ever stocked two of them, so I ordered one, and it never was the same length.

I eventually ordred two so they had a chance to be from the same lot and thus the same size.

might give that a try. Don't just take 2 if they have them there, order a set.

Did they come in sets? That was how mopar sold them. Did you try the dealer? Mike

My Barracuda keeps them on at 7,000rpm powershifting a 4-speed. I have A/C and P/S, running the 70-newer bracket setup. It was quite a challenge getting the pulley alignment perfect and choosing the correct belts. As stated, there always seems to be one belt that is a touch longer than the other one, but on a 2 belt A/C compressor, alignment comes into play and solves that problem