Re: ZL1 oil pump
Our L78 runs 50-55 psi going down the road and around 15-20 at idle. The COPO car has the factory gauges which are pretty Mickey Mouse. Looked like about 10 psi at idle and 50 going down the road. I wouldn't count on the accuracy but the engine never had an oiling problem. I think that the L88-ZL1 oil pumps had internal modifications to counter cavitation at higher rpms. Probably something that Grumpy Jenkins figured out. Chevy oiling systems are good and don't need high pressure. I'd be more concerned about oil pan capacity. Six quart would be more to my liking.
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Chevelleless after 46 years......but we did find a low mileage, six speed, silver 2005 Corvette. It will just have to do for now. 
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