Oil clearances and a surprise

I REALLY like Mr.Gasket’s Ultra Seals. However, any major gasket player should be fine. FWIW, a tip, don’t over tighten the center port bolts! It warps the flange.

I also use a reduced size head on the header bolts. From ARP. I’ll get the part number tomorrow. There a 3/8 head bolt. I cut down a small wrench to fit in easier on the tight spots. While the header is hanging on the end studs, I grab the tight ones first. Blue lock tight should do the trick on holding them in.