Racers who run the GM 602 and 604 ... oil filter and a remote oil cooler. For the filter, GM located two -10 AN fittings on the left rear of the pan. The front fitting is the feed from the engine ...

And it's one of the more fun race engine builds we've undertaken. We started this project by purchasing a no-longer-running Chevrolet 604 crate engine that had been pulled after blowing a head gasket.