I've never had a problem with belts in the past. I had the same belts on for at least the last 15 years until last winter when I rebuilt my PS pump. I decided to throw some new belts on. I used the DAYCO Top Cog belts which seem to be complete JUNK.
At the dragstrip I will usually remove the PS belt its good for about a tenth in ET and I need all the help I can get.. The car has PS/AC (unhooked). The last 2 times out I've either broken or almost broken the ALT belt. I realize that hooking up the PS belt would likely fix/eliminate this problem and I may just start running the PS. At this stage I'm mostly removing the belt for consistency. My last 40 or so passes have been with no PS and I'm pretty closely monitoring timeslips.
At the dragstrip parts store they had this NAPA belt which is wider/deeper and way beefier. I bought it after breaking the first belt at the strip to get home. This is the only belt that continues to survive.
Despite the belt problems the car is running faster than ever. I had a new best time of 12.84 at 105.5 MPH last week in 9,000DA air at THUNDER MOUNTAIN.
Any suggestions appreciated. Thanks.