Quote:
Originally Posted by AusTx68
Are they old headers? The PO may of had two gaskets to make up for a warped flange. I ran into problems when I installed the cheap gaskets that came with my headers. I replaced them with Mr. Gasket Ultra-Seal gaskets. After a week or so go back and tighten the gaskets and you are set. That's if you don't have warped flanges.
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X-2 on the Ultra Seals. I have never had one blow out, if they loosen, just re-torque. Get a nice straight edge and check the flange for straightness. If they are too out of kilter, you might be wasting your time. .02