Re: Diesel water pump?
As far as I know there are no interchangeable parts between the 5.7L Olds Diesel and the GM 6.2L or 6.5TD. Sorry, but I think you'll have to get a new pump specifically for the 350 Olds. The GM 6.2L series was a complete ground up design and not based on any other engine, the Olds is a converted gas motor. As for the intake manifold, that was common to several V8 engines under the GM umbrella, including Olds. Hope this helps.