Vent for 12 Bolt Rear
 

My 66 Lemans has a 12 Bolt rear from 66 Chevelle. The vent hole is in the center section and smaller than 3/8”. The vent tubes I’ve found all say for 3/8” hole. They all look the like the one Inline Tube sells, advertised as 64-81 Chevelle for 3/8” axle hole, and when I enter the make and model information, it says it won’t fit. Where do I find one that fits?

https://ebay.us/m/9aymTa

Original part number was 3820840.

Thank you- will give that a shot

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

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.

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.

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

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

Thanks - just ordered! Hope it fits cause shipping was a big kick in the cojones!

If ever in need of a new vent for a corporate 8.5 this is the one I bought for my ‘71 Olds 8.5 rear.

Part #1236317

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.