Had exactly the same situation. Can't understand the disclaimer considering the original application is for 425 and 450hp cars, although looking the other posts seems to answer that question. I ended up getting the same pulley from Heartbeat.....without the disclaimer. There appears to be Chinesium and American made versions available but identical in appearance. I do have an original but it looks like it has been repaired as per the descriptions above regarding durability, so I opted not to use it.
Sounds like there is an opportunity for someone to offer a more suitable product.
In the meantime, won't be revving my 427 L72 to 7K rpm
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07-20-2023, 12:09 AM
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