Re: 67 Corvette 427/435 hp BBC Deep Groove Pulleys
You need a three groove cast iron crank pulley, the last groove (away from the motor) drives the p/s pump. Originals are very hard to come by, not sure how the repos's fit/function. That would describe the Impala/Camaro set up, corvette ran P/s with your 108 crank pulley and a different pulley configuration, so you can look into that route as well.
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