my pcv valve is screwed in to the back side of my carb on pas side does anyone still sell these, and what is the AC DELCO part#,mine is still original and it still rattles, is it still good? THANKS in advance GARY:beers:

Im still running my orginal factory one...every so often wash it out with a bit of petrol and blow with the compressor...they dont wear out.
To test should only be able to blow thru 1 way.