Steve91T

Hey guys. I've got an LT1 Camaro that I road race. I need to install an oil cooler and I want to use an oil sandwich adapter. I've removed the factory oil cooler and for now am just screwing the filter directly to block. (Where the cooler used to be)

Does anyone know what thread size I need to order?

Thanks. I'm out of town and I need to place an order this afternoon.