Intake gaskets
 

I'm putting a square port intake on oval port heads, which gaskets get used - square or oval?

https://www.yenko.net/ubbthreads/pics..._cutting_2.jpg

Re: Intake gaskets
 

You would have to use the larger of the two, the square port gasket or you would have a very bad vacuum leak.

Re: Intake gaskets
 

Rectangle ...

Re: Intake gaskets
 

Looking awesome Marlin. Rectangle gaskets are what you need. Let us know how it works out. I have known many guys who have had great results with a rectangular manifold on oval heads.


Jason

Re: Intake gaskets
 

Years ago I had 70SS Chevelle with an LS5 454. I installed a LS6 intake and used the rectangle port gaskets on the oval port heads. Worked well together without any problems. This was many years ago too.

Ray

Re: Intake gaskets
 

Did this on a 427 +.060 with a 850 puddle dumper -- worked great ... spun 6500 all day long. TAZ

Re: Intake gaskets
 

I did it like this

https://www.yenko.net/ubbthreads/pics...e67rag_064.jpg

port matched with porting epoxy

Re: Intake gaskets
 

Looks like that will work. On my 427, I tapered the top of the intake port on the head to match the rectangle intake. TAZ

Re: Intake gaskets
 

Use the square port.
https://m.facebook.com/seth.brown.50...p_1f&mdf=1
These would work with a certain Felpro gasket.

Re: Intake gaskets
 

Thanks all,