I was wondering how critical the counterweight butterfly flapper valve was, in the exhaust manifold of my '59 half ton's 261... I'm thinking a 235 should be the same.
Would it hurt to remove it in it's entirety and plug the holes where the shaft rotates?
I'm not sure what purpose of design this item is and because of it, I'm looking for an exhaust manifold. Should I be?
Thanks in advance,
Jerry
