EGR Valve question help

Help please!
I try to find a EGR valve for my 1989 Caprice Wagon VIN Y. 5L. carburetor.
The EGR valve must a positive back pressure valve. I try the Google search but the one I find do not mention if it's for VIN Y or if it's positive.
I will need some help to put me on the right direction to find the elusive EGR valve!
Many thanks.

 

I am fairly certain that the 307 EGR valve is the same for both VIN 9 & VIN Y, positive backpressure and all. I've replaced one in a 1989 Cadillac and what came from the parts store worked just fine.

 

Thank you, much appreciated. I will try this EGR.

 

Using your wagon's description, this is the valve you need:

https://www.oreillyauto.com/detail/...-car-1989-chevrolet-caprice?q=egr+valve&pos=0

The item that tells you this is correct are the two small holes drilled in the base and gasket, which are part of the positive pressure feature.

 

Many thanks for your help. And for the way how to know if it's a positive pressure valve.

 

You're quite welcome.