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Nice catch, oldman.
The LT1 has 1.8 rockers. The GMPP heads for the GM "hot cam" uses 1.81 rockers. The old SBC LT1/LT4's used 1.6 rockers. I see the wrote LTVVT for the engine type, but I would call and confirm with them that it was cut for 1.8 rockers and ask them to ship an accurate cam card.
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