8BA road draft tube OD
 

Or the ID of the hole in the manifold for the road draft tube ?

Looks like 1 5/8" or so?

Thanks.

Re: 8BA road draft tube OD
 

Not sure the exact dimension, but if you're possibly looking for a way to block it off for a PCV Valve mod, a Dorman #555-023 freeze plug is a perfect fit. Link to the thread if you're interested. DD

https://www.fordbarn.com/forum/showt...pman+pcv+valve


https://www.fordbarn.com/forum/attac...3&d=1595568064


https://www.fordbarn.com/forum/attac...2&d=1595568016


https://www.fordbarn.com/forum/attac...1&d=1595567961





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Re: 8BA road draft tube OD
 

I believe he is asking about the size of the exterior tube on an 8BA type manifold.

Are they the same?

Re: 8BA road draft tube OD
 

Tub is correct.....and I blew it once again! DD

Re: 8BA road draft tube OD
 

It is 1 1/4" where it enters intake.

Re: 8BA road draft tube OD
 

Thanks for that. Greatly appreciated.

Re: 8BA road draft tube OD
 

Do you need the tube?

Re: 8BA road draft tube OD
 

Naw. When the engine gets back from H&H I'm going to install a ME Wagner PCV valve on it........ I refuse to buy an aluminum plug for $40 (Jamco) when I can machine a remnant piece of 6061 in 5 minutes.

Re: 8BA road draft tube OD
 

or you could use a freeze plug, inverted, braze a fitting on it for the pcv...

Karl