Robert Adolfsen, Eastport, NY, 1970 Dodge Charger HEMI

Richard, thanks for the many years of priceless information. I am a subscriber and always look forward to your articles. I am building a 426 HEMI for my '70 Charger. I did all of the machine work myself, except for the balancing and checking of the compression. The guy who did the balancing for me is a crew chief for an NHRA Pro Stock team. I have known him for many years and he has done countless balance jobs for me in the past. On my engine, I have a compression ratio of just under 10.25:1 and have to use a .060 thick copper head gasket to achieve that. My friend said I don't need to "O" - ring the heads and block for this set up as long as I use a good sealant spray, such as Halamar, on both sides of the gasket. He has never steered me wrong before and actually has much experience with HEMIs from way back when. My question is: Do you agree with him on not "O" ringing the heads and block? I value your opinion on this question. Thanks in advance, R!