Has 411 rear gears and 700 tranny. It’s not an aftermarket breather . Couple folks think it may be from a early 90’s police car. Still no luck. No numbers on rear of engine above bell housing or behind alternator below head as has been suggested.
I plan to pull the motor next week so may be able to find out more if I can find numbers.
Go-Mo!!! Even when it has a Chevy powertrain.
Thanks for responding folks.