I have a used 48 degree block and assembly that I haven’t touched yet. I have a 59 degree R3 in my black Duster. I posted some pictures of it while I was building it and another Moparts member suggested putting more oil drain back oil holes In The intake valley. Th previous owner drilled some but I drilled several bigger holes. I also bought an accumulator but it wasn’t needed

1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time