I have not personally did this but I have followed previous threads. If my memory serves me correctly you can purchase those "bushings". Someone else will be along to say where. The bushings in the head make it fit better to the bigger 235 Exhaust manifold ports. Hope its clearer?


1937 Chevy Pickup
In the Gallery
1952 Chevy Panel
In the Gallery
More photos
1950 Chevy Coupe
Pictures!

I'd rather walk and carry a Chevy hub cap than ride in a Ferd.
I can explain it to you, but I can't understand it for you smile