I even posted in this thread, lol. Shows how bad my memory is. SO......Have you put it back together and tested it out at all? What is your current resolution?I just went through this same exact thing. Concept 1 pulley system using an Eldebrock pump.
While valve train is suspect......given this is a 4 speed car and "burnout" and 6300 RPM....you may have broken a spring on your clutch disc I so hope it's a trans thing, then I would just do a TKX swapwww.camaros.net
I have two solutions;
1-Take out the 1" spacer. Monitor the engine temp and evaluate whether the change in fan location causes temperature change. My A/C clutch is thinner than yours, so I think I can remove the spacer and not hit my A/C compressor with the fan blades.
2-Trying to contact Stewart to see if they have a Stage 3 reverse-flow BBC short water pump. Their Stage 3 has a larger shaft per their website so I'm thinking it would better withstand any further out leverage forces.
I will be calling Stewart today as they did not reply to my email.
Will update as needed,