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Originally Posted by Flash68
Thanks for the heads-up... what would you recommend for a better bracket setup?
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I built my own. It uses the same ATI spacers & pulley and fits in the same location. I made a new plate and used a turnbuckle from the lower portion of the water pump to apply belt tension, then you tighten the 2 bolts to the front of the block to lock it down.
I have a pic here where you can see it.
http://home.comcast.net/~procharged6.../psbracket.jpg
Lower bolt hole is the pivot, the upper bolt is the slot for adjustment. It has a somewhat narrow adjustment range but with the right size belt you only need it to move a little bit to achieve proper tension.
Haven't blown up a single belt with the new bracket. With the ATI setup with the idler pulley I would get about 400-500 miles of life out of a v-belt before they would start to split badly; first high RPM zing in that condition would result in a grenaded belt.
I still have the CAD drawing of it. You can print it out to scale and use that for a template or CNC it if you want to go that route. Eventually I'll remove mine and lighten it up some with a few speed holes & pockets, it's way beefier than it needs to be. I only made it out of 3/4" aluminum plate because that's what the ATI bracket is and keeping it the same thickness allowed me to reuse their spacers & pulley.