[grivera]

Thank you- will give that a shot

[Kenth]

Check these:

https://www.firebirdcentral.com/Fire...nnmLQCDJyrfQgM

http://www.nitemareperformance.com/1...breathers.html

https://www.summitracing.com/parts/opg-c220128

https://www.summitracing.com/parts/oer-15771000

HTH

[sdbob]

I read on line the size is id is.375. Dorman makes one try local parts store. Also measure your hole, might be tight .375. I googled 12 bolt . 312 vent. Was talked about.

[grivera]

Originally Posted by Kenth

Check these:

https://www.firebirdcentral.com/Fire...nnmLQCDJyrfQgM

http://www.nitemareperformance.com/1...breathers.html

https://www.summitracing.com/parts/opg-c220128

https://www.summitracing.com/parts/oer-15771000

HTH

Thanks- all of these are 3/8 and the hole is 5/16 (.312). I tried one of 3/8 variety for S&G and confirmed.

Originally Posted by sdbob

I read on line the size is id is.375. Dorman makes one try local parts store. Also measure your hole, might be tight .375. I googled 12 bolt . 312 vent. Was talked about.

The .312" valve is what I need but apparently, it's constructed of unobtanium

[400 Lemans]

This one might work for you.https://torqueking.com/products/3004...4NJ2eqcB1EtT2q

[grivera]

Originally Posted by 400 Lemans

This one might work for you.https://torqueking.com/products/3004...4NJ2eqcB1EtT2q

I made the Tork King one work - had to sand it down some for a fully seated and snug fit, and used RTV to make sure it's sealed.